Journal articles: 'Classification of Communicators with Aphasia'

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Rao, Paul R. "The aphasia syndromes: Localization and classification." Topics in Stroke Rehabilitation 1, no. 2 (June 1994): 1–13. http://dx.doi.org/10.1080/10749357.1994.11754016.

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Cooper, Judith A., and Charles R. Flowers. "Children with a History of Acquired Aphasia." Journal of Speech and Hearing Disorders 52, no. 3 (August 1987): 251–62. http://dx.doi.org/10.1044/jshd.5203.251.

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Fifteen children and adolescents with a history of acquired aphasia were administered a battery of language and academic tests, 1–10 years postonset. As a group, these children performed significantly more poorly than non-brain-injured subjects on the language measures, with deficits in word, sentence, and paragraph comprehension; naming; oral production of complex syntactic constructions; and word fluency. One particular language deficit or cluster of deficits did not characterize the group as a whole. For individual brain-injured subjects, language deficits ranged from no or only mild impairment to significant language deficits. All brain-injured subjects were functional verbal communicators at the time of the study; that is, all were oral and primarily used grammatical sentences as their means of communication. Academic difficulties were characteristic of this population. Two thirds of the brain-injured group were receiving academic assistance of some kind at the time of the study. Poor performance on arithmetic calculations was typical. The brain-injured group was heterogeneous with regard to age at onset, etiology, extent of damage, length of recovery, and outcome profiles. Careful and comprehensive assessment of a range of language and academic abilities is essential to adequately identify needs and appropriate intervention strategies for this population.

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VFaria, Andreia, Jennifer Crinion, Richard Leigh, Michael Miller, Susumu Mori, and Argye EHillis. "Automated Anatomic Classification of Primary Progressive Aphasia." Procedia - Social and Behavioral Sciences 6 (2010): 15–16. http://dx.doi.org/10.1016/j.sbspro.2010.08.007.

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Harris, J. M., C. Gall, J. C. Thompson, A. M. T. Richardson, D. Neary, D. du Plessis, P. Pal, D. M. A. Mann, J. S. Snowden, and M. Jones. "Classification and pathology of primary progressive aphasia." Neurology 81, no. 21 (October 18, 2013): 1832–39. http://dx.doi.org/10.1212/01.wnl.0000436070.28137.7b.

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Buică Belciu, Cristian. "Taking the long way: conceptual framework development, symptomatology, and classification in aphasia." Studia Doctoralia 10, no. 2 (December 13, 2019): 114–24. http://dx.doi.org/10.47040/sd/sdpsych.v10i2.98.

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The present theoretical study aims to make an incursion into the history of description, definition and conceptualization of aphasia. Old and modern opinions on the etiology and symptomatology of aphasia are presented. Also, the types of aphasia and their prognosis are described.

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Buică Belciu, Cristian. "Taking the long way: conceptual framework development, symptomatology, and classification in aphasia." Studia Doctoralia 10, no. 2 (December 13, 2019): 114–24. http://dx.doi.org/10.47040/sd0000076.

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The present theoretical study aims to make an incursion into the history of description, definition and conceptualization of aphasia. Old and modern opinions on the etiology and symptomatology of aphasia are presented. Also, the types of aphasia and their prognosis are described.

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Landrigan, Jon-Frederick, Fengqing Zhang, and Daniel Mirman. "A data-driven approach to post-stroke aphasia classification and lesion-based prediction." Brain 144, no. 5 (May 1, 2021): 1372–83. http://dx.doi.org/10.1093/brain/awab010.

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Abstract Aphasia is an acquired impairment in the production or comprehension of language, typically caused by left hemisphere stroke. The subtyping framework used in clinical aphasiology today is based on the Wernicke-Lichtheim model of aphasia formulated in the late 19th century, which emphasizes the distinction between language production and comprehension. The current study used a data-driven approach that combined modern statistical, machine learning, and neuroimaging tools to examine behavioural deficit profiles and their lesion correlates and predictors in a large cohort of individuals with post-stroke aphasia. First, individuals with aphasia were clustered based on their behavioural deficit profiles using community detection analysis (CDA) and these clusters were compared with the traditional aphasia subtypes. Random forest classifiers were built to evaluate how well individual lesion profiles predict cluster membership. The results of the CDA analyses did not align with the traditional model of aphasia in either behavioural or neuroanatomical patterns. Instead, the results suggested that the primary distinction in aphasia (after severity) is between phonological and semantic processing rather than between production and comprehension. Further, lesion-based classification reached 75% accuracy for the CDA-based categories and only 60% for categories based on the traditional fluent/non-fluent aphasia distinction. The results of this study provide a data-driven basis for a new approach to classification of post-stroke aphasia subtypes in both research and clinical settings.

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Clark, Heather M., Rene L. Utianski, Joseph R. Duffy, Edythe A. Strand, Hugo Botha, Keith A. Josephs, and Jennifer L. Whitwell. "Western Aphasia Battery–Revised Profiles in Primary Progressive Aphasia and Primary Progressive Apraxia of Speech." American Journal of Speech-Language Pathology 29, no. 1S (February 21, 2020): 498–510. http://dx.doi.org/10.1044/2019_ajslp-cac48-18-0217.

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Purpose The primary aim was to examine the utility of the Western Aphasia Battery–Revised (WAB-R; Kertesz, 2007 ) for classifying variants of primary progressive aphasia (PPA). Traditional WAB-R metrics of Aphasia Quotient (AQ), subtest scores, WAB-R classification, and several novel metrics were examined. A secondary aim was to examine these same WAB-R metrics in individuals with primary progressive apraxia of speech (PPAOS). Method A retrospective analysis of WAB-R records from 169 participants enrolled in a study of neurodegenerative speech and language disorders was conducted. PPA/PPAOS classification was determined by consensus review of speech, language, and cognitive profiles. Scores on each of the WAB-R subtests were obtained to derive AQ, WAB-R aphasia profile, and 3 ratios reflecting relative performance on subtests. Results Mean AQ was significantly higher in the PPAOS group compared to all PPA variants except primary fluent aphasia. AQ above the normal cutoff was observed for 20% of participants with PPA. Significant main effects of group were noted for each of the subtests. Follow-up comparisons most frequently discriminated PPAOS, primary agrammatic aphasia (PAA), and logopenic progressive aphasia. Primary fluent aphasia and semantic dementia (SD) subtest scores were less distinctive, with the exception of Naming for SD, which was significantly lower than for PAA and PPAOS. When the WAB-R AQ detected aphasia, a classification of anomic aphasia was most frequently observed; this pattern held true for each of the PPA variants. The mean Information Content:Naming ratio was highest for SD, and the mean Comprehension:Fluency ratio was highest for PAA. Conclusions In the current study, AQ underestimated the presence of PPA and WAB-R classification did not distinguish among PPA classification determined by consensus. Performance on individual subtests and relative performance across subtests demonstrated inconsistent alignment with PPA classification. We conclude the WAB-R in isolation is inadequate to detect or characterize PPA. We instead suggest utilizing the WAB-R as 1 component of a comprehensive language and motor speech assessment when PPA is suspected.

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Tippett, Donna C. "Classification of primary progressive aphasia: challenges and complexities." F1000Research 9 (January 30, 2020): 64. http://dx.doi.org/10.12688/f1000research.21184.1.

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Primary progressive aphasia (PPA) is classified into three variants, logopenic variant PPA (lvPPA), nonfluent agrammatic PPA (nfaPPA), and semantic variant PPA (svPPA), based on clinical (syndromic) characteristics with support from neuroimaging and/or underlying neuropathology. Classification of PPA variants provides information valuable to disease management. International consensus criteria are widely employed to identify PPA subtypes; however, classification is complex, and some individuals do not fit neatly into the subtyping scheme. In this review, diagnostic challenges and their implications are discussed, possible explanations for these challenges are explored, and approaches to address PPA classification are considered.

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Gorno-Tempini, M. L., A. E. Hillis, S. Weintraub, A. Kertesz, M. Mendez, S. F. Cappa, J. M. Ogar, et al. "Classification of primary progressive aphasia and its variants." Neurology 76, no. 11 (February 16, 2011): 1006–14. http://dx.doi.org/10.1212/wnl.0b013e31821103e6.

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Marshall, Jane. "Classification of aphasia: Are there benefits for practice?" Aphasiology 24, no. 3 (March 2010): 408–12. http://dx.doi.org/10.1080/02687030802553688.

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Bartlett, Cynthia L., and Gail V. Pashek. "Taxonomic theory and practical implications in aphasia classification." Aphasiology 8, no. 2 (March 1994): 103–26. http://dx.doi.org/10.1080/02687039408248645.

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John, Aju Abraham, Mahendra Javali, Rohan Mahale, Anish Mehta, P. T. Acharya, and R. Srinivasa. "Clinical impression and Western Aphasia Battery classification of aphasia in acute ischemic stroke: Is there a discrepancy?" Journal of Neurosciences in Rural Practice 08, no. 01 (January 2017): 074–78. http://dx.doi.org/10.4103/0976-3147.193531.

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ABSTRACT Background: Language disturbance is a common symptom of stroke, a prompt identifier of the event, and can cause devastating cognitive impairments. There are many inconsistencies and discrepancies between the different methods used for its evaluation. The relationship between Western Aphasia Battery (WAB) and a simple bedside clinical examination is not clear. Aim: The aim of this study is to determine if bedside clinical impression of aphasia type can reliably predict WAB classification of aphasia and to describe the discrepancies between them. Materials and Methods: Eighty-two consecutive cases of acute ischemic stroke and aphasia were evaluated with bedside aphasia assessment, handedness by Edinburgh Handedness Inventory and WAB scoring was done. Kappa statistics was used to find the overall agreement of clinical impression and WAB. Results: Disagreement was seen predominantly for the nonfluent aphasias when the clinical impression was compared with WAB classification. WAB also had diagnosed three cases as having anomic aphasia using taxonomic classification, but same cases had normal language by aphasia quotient scoring of WAB. There was an overall agreement of 63.4% between patient’s bedside clinical impression and WAB classification of aphasia, with a P< 0.001. Conclusion: Clinical impression was fairly reliable, as compared to WAB in assessing the type of aphasia. Clinical impression was appropriate in an acute setting, but WAB was required to quantify the severity of deficit, which may help in accessing prognosis, monitoring progression, and rehabilitation planning. Along with WAB, a bedside clinical impression should be done for all the patients to strengthen the description of aphasic deficit.

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Silva, Bhagya Nathali, Murad Khan, Ruchire Eranga Wijesinghe, Samantha Thelijjagoda, and Kijun Han. "Development of Computer-Aided Semi-Automatic Diagnosis System for Chronic Post-Stroke Aphasia Classification with Temporal and Parietal Lesions: A Pilot Study." Applied Sciences 10, no. 8 (April 24, 2020): 2984. http://dx.doi.org/10.3390/app10082984.

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Survivors of either a hemorrhagic or ischemic stroke tend to acquire aphasia and experience spontaneous recovery during the first six months. Nevertheless, a considerable number of patients sustain aphasia and require speech and language therapy to overcome the difficulties. As a preliminary study, this article aims to distinguish aphasia caused from a temporoparietal lesion. Typically, temporal and parietal lesions cause Wernicke’s aphasia and Anomic aphasia. Differential diagnosis between Anomic and Wernicke’s has become controversial and subjective due to the close resemblance of Wernicke’s to Anomic aphasia when recovering. Hence, this article proposes a clinical diagnosis system that incorporates normal coupling between the acoustic frequencies of speech signals and the language ability of temporoparietal aphasias to delineate classification boundary lines. The proposed inspection system is a hybrid scheme consisting of automated components, such as confrontation naming, repetition, and a manual component, such as comprehension. The study was conducted involving 30 participants clinically diagnosed with temporoparietal aphasias after a stroke and 30 participants who had experienced a stroke without aphasia. The plausibility of accurate classification of Wernicke’s and Anomic aphasia was confirmed using the distinctive acoustic frequency profiles of selected controls. Accuracy of the proposed system and algorithm was confirmed by comparing the obtained diagnosis with the conventional manual diagnosis. Though this preliminary work distinguishes between Anomic and Wernicke’s aphasia, we can claim that the developed algorithm-based inspection model could be a worthwhile solution towards objective classification of other aphasia types.

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Горбатов, D. Gorbatov, Байчик, and A. Baychik. "Measures of Counteraction to False Rumors: Criteria and Categories of Classification." Socio-Humanitarian Research and Technology 5, no. 3 (September 19, 2016): 47–52. http://dx.doi.org/10.12737/20937.

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Classification means to combat false rumors constructed on the following bases: tactics used for counteraction, statuses of key communicators, objects of information influence and specifics of its implementation, presented for the first time. The set of categories, allowing identifying concrete means in practice, for each classification criterion is defined. Use of this classification instead of previous not systematized lists of measures creates prerequisites to increase effectiveness of campaigns to combat the influence of false rumors.

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Wilson, Stephen M., Jennifer M. Ogar, Victor Laluz, Matthew Growdon, Jung Jang, Shenly Glenn, Bruce L. Miller, Michael W. Weiner, and Maria Luisa Gorno-Tempini. "Automated MRI-based classification of primary progressive aphasia variants." NeuroImage 47, no. 4 (October 2009): 1558–67. http://dx.doi.org/10.1016/j.neuroimage.2009.05.085.

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Wilson, SM, JM Ogar, V. Laluz, BL Miller, MW Weiner, and ML Gorno-Tempini. "Automated MRI-based classification of primary progressive aphasia variants." NeuroImage 47 (July 2009): S58. http://dx.doi.org/10.1016/s1053-8119(09)70234-4.

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Hoffman, Paul, Seyed Ahmad Sajjadi, Karalyn Patterson, and Peter J. Nestor. "Data-driven classification of patients with primary progressive aphasia." Brain and Language 174 (November 2017): 86–93. http://dx.doi.org/10.1016/j.bandl.2017.08.001.

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Ingram, Ruth U., Ajay D. Halai, Gorana Pobric, Seyed Sajjadi, Karalyn Patterson, and Matthew A. Lambon Ralph. "Graded, multidimensional intra- and intergroup variations in primary progressive aphasia and post-stroke aphasia." Brain 143, no. 10 (September 17, 2020): 3121–35. http://dx.doi.org/10.1093/brain/awaa245.

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Abstract Language impairments caused by stroke (post-stroke aphasia, PSA) and neurodegeneration (primary progressive aphasia, PPA) have overlapping symptomatology, nomenclature and are classically divided into categorical subtypes. Surprisingly, PPA and PSA have rarely been directly compared in detail. Rather, previous studies have compared certain subtypes (e.g. semantic variants) or have focused on a specific cognitive/linguistic task (e.g. reading). This study assessed a large range of linguistic and cognitive tasks across the full spectra of PSA and PPA. We applied varimax-rotated principal component analysis to explore the underlying structure of the variance in the assessment scores. Similar phonological, semantic and fluency-related components were found for PSA and PPA. A combined principal component analysis across the two aetiologies revealed graded intra- and intergroup variations on all four extracted components. Classification analysis was used to test, formally, whether there were any categorical boundaries for any subtypes of PPA or PSA. Semantic dementia formed a true diagnostic category (i.e. within group homogeneity and distinct between-group differences), whereas there was considerable overlap and graded variations within and between other subtypes of PPA and PSA. These results suggest that (i) a multidimensional rather than categorical classification system may be a better conceptualization of aphasia from both causes; and (ii) despite the very different types of pathology, these broad classes of aphasia have considerable features in common.

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Frost, Raymond D., Mark L. Gillenson, Gillian A. Hotz, Kester J. Nedd, and Rachel K. Parris. "An expert database technique applied to an aphasia classification system." Aphasiology 8, no. 1 (January 1994): 55–63. http://dx.doi.org/10.1080/02687039408248640.

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Willis, Mark, and Neil Robertson. "Aphasia: early classification, evaluation of existing therapy, and novel therapeutics." Journal of Neurology 259, no. 11 (October 20, 2012): 2510–12. http://dx.doi.org/10.1007/s00415-012-6701-5.

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Davidoff, Jules. "Two types of thought: Evidence from aphasia." Behavioral and Brain Sciences 28, no. 1 (February 2005): 20–21. http://dx.doi.org/10.1017/s0140525x05290015.

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Evidence from aphasia is considered that leads to a distinction between abstract and concrete thought processes and hence for a distinction between rules and similarity. It is argued that perceptual classification is inherently a rule-following procedure and these rules are unable to be followed when a patient has difficulty with name comprehension and retrieval.

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Lasker, Joanne P. "AAC Language Assessment: Considerations for Adults With Aphasia." Perspectives on Augmentative and Alternative Communication 17, no. 3 (September 2008): 105–12. http://dx.doi.org/10.1044/aac17.3.105.

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Abstract The process of recommending AAC systems and strategies for adults with aphasia requires clinicians to analyze both the language skills of the client and the specific language demands posed by different AAC systems. This paper describes some of the challenges people with aphasia face when attempting to use AAC approaches and presents a brief overview of language assessment techniques for people with aphasia. We review the AAC-Aphasia Classification System (Garrett & Lasker, 2005)—a tool for describing communication behaviors of people with aphasia. We present a brief analysis of the language features inherent in some AAC systems in terms of language storage and retrieval. We also discuss the importance of matching clients' current and potential language skills with an appropriate AAC tool.

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Worrall, Linda, and Sarah Wallace. "The ICF, Relationship-Centred Care and Research Outcome Measurement: Carol Frattali's Impact on Aphasia Research." Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders 25, no. 3 (June 2015): 107–13. http://dx.doi.org/10.1044/nnsld25.3.107.

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Outcome measurement was a major focus of Carol Frattali's work. This article describes three aphasia research initiatives that have followed from her early publications. The first is the application of the World Health Organization (WHO) International Classification of Functioning, Disability and Health (ICF) to aphasia. The Living with Aphasia: A Framework for Outcome Measurement (A-FROM) is a reinterpretation of the ICF specifically as it applies to aphasia. The Assessment for Living with Aphasia (ALA) is an assessment that is derived from the A-FROM. The second initiative is the program of research that has described aphasia and aphasia rehabilitation from the patient perspective. Using qualitative methodologies, this research has highlighted the need for relationship-centred care in aphasia services. Finally, a current project is described that seeks to gain international consensus on a core outcome set for aphasia treatment research. This will help researchers combine data in effectiveness studies. To achieve the best outcomes for people with aphasia, there is a need to realize Carol Frattali's vision and ensure the continued use of unifying frameworks, relationship-centered practice, consumer-focused research, and consistent outcome measurement practices.

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LAUTERBACH, MARTIN, ISABEL PAVÃO MARTINS, PAULA GARCIA, JOANA CABEÇA, ANA CRISTINA FERREIRA, and KLAUS WILLMES. "Cross linguistic aphasia testing: The Portuguese version of the Aachen Aphasia Test (AAT)." Journal of the International Neuropsychological Society 14, no. 6 (October 27, 2008): 1046–56. http://dx.doi.org/10.1017/s1355617708081253.

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AbstractWe report the adaptation of the Aachen Aphasia Test (AAT) to the Portuguese language (PAAT) and the results of its standardization in 125 persons with aphasia and 153 healthy controls. Patients with aphasia had a previous syndromic diagnosis, obtained through a Portuguese aphasia battery, which served as a reference. The control group was stratified by age and educational level. Hierarchical cluster analyses showed good construct validity. The increasing degree of difficulty and complexity throughout the item sets comprising subtests was confirmed. The discriminatory power of the PAAT for the selection of aphasic from non-aphasic persons proved to be as high as for the AAT versions in other languages. Classification of standard aphasic syndromes by means of discriminant analyses was good. Internal consistency, measured by means of Cronbach's alpha coefficient, was high to very high for the different PAAT subtests. Performance differences caused by age or educational level among the healthy control persons emphasized the need for correction factors. In conclusion, the PAAT showed robust psychometrical properties, comparable to the original German and to adaptations to other languages. It constitutes a useful tool for cross-linguistic and multicenter studies. (JINS, 2008, 14, 1046–1056.)

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Senaha, Mirna Lie Hosogi, Paulo Caramelli, Sonia M. D. Brucki, Jerusa Smid, Leonel T. Takada, Claudia S. Porto, Karolina G. César, et al. "Primary progressive aphasia: Classification of variants in 100 consecutive Brazilian cases." Dementia & Neuropsychologia 7, no. 1 (March 2013): 110–21. http://dx.doi.org/10.1590/s1980-57642013dn70100017.

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ABSTRACT Primary progressive aphasia (PPA) is a neurodegenerative clinical syndrome characterized primarily by progressive language impairment. Recently, consensus diagnostic criteria were published for the diagnosis and classification of variants of PPA. The currently recognized variants are nonfluent/agrammatic (PPA-G), logopenic (PPA-L) and semantic (PPA-S). Objective: To analyze the demographic data and the clinical classification of 100 PPA cases. Methods: Data from 100 PPA patients who were consecutively evaluated between 1999 and 2012 were analyzed. The patients underwent neurological, cognitive and language evaluation. The cases were classified according to the proposed variants, using predominantly the guidelines proposed in the consensus diagnostic criteria from 2011. Results: The sample consisted of 57 women and 43 men, aged at onset 67.2±8.1 years (range of between 53 and 83 years). Thirty-five patients presented PPA-S, 29 PPA-G and 16 PPA-L. It was not possible to classify 20% of the cases into any one of the proposed variants. Conclusion: It was possible to classify 80% of the sample into one of the three PPA variants proposed. Perhaps the consensus classification requires some adjustments to accommodate cases that do not fit into any of the variants and to avoid overlap where cases fit more than one variant. Nonetheless, the established current guidelines are a useful tool to address the classification and diagnosis of PPA and are also of great value in standardizing terminologies to improve consistency across studies from different research centers.

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Yang, Mi, Jiao Li, Zhiqiang Li, Dezhong Yao, Wei Liao, and Huafu Chen. "Whole-brain functional connectome-based multivariate classification of post-stroke aphasia." Neurocomputing 269 (December 2017): 199–205. http://dx.doi.org/10.1016/j.neucom.2016.10.094.

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Fraser, Kathleen C., Jed A. Meltzer, Naida L. Graham, Carol Leonard, Graeme Hirst, Sandra E. Black, and Elizabeth Rochon. "Automated classification of primary progressive aphasia subtypes from narrative speech transcripts." Cortex 55 (June 2014): 43–60. http://dx.doi.org/10.1016/j.cortex.2012.12.006.

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Zotov, V. V., and A. I. Alekseenko. "Identification of Social Barriers in the EthnoConfessional Space of Public Communication of Border Regions." Communicology 9, no. 1 (July 15, 2021): 139–50. http://dx.doi.org/10.21453/2311-3065-2021-9-1-139-150.

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The relevance of the study is substantiated by to the need to develop effective measures for localization and overcoming possible negative consequences of ethnoconfessional processes in the border regions of the Russian Federation, which is achieved with a developed level of the ethno-confessional space of public communication. The methodology for organizing such a space is based on the concept of public values management, which considers social development through the prism of active involvement of stakeholders in the discussion of socially significant tasks and participation in the implementation of the decisions made. The aim of the work is to determine the social barriers of this space that impede the interaction of its stakeholders. Based on systematization of relevant publications, the authors reveal the essence of the concept of “social barrier of communication” and classify them; based on the expert survey conducted by the authors in 2020 among representatives of the main stakeholders, level of manifestation of the identified social barriers is determined.Scientific novelty of the paper consists in the introduction of the definition of social barriers in the ethno-confessional space of public communications, the author’s classification of these barriers based on the structure of two-way symmetric communication, within which communicators, message, channels, efficiency / result and situation can be distinguished. This classification made it possible to single out the following social barriers to communication: for communicators, these barriers are manifested as low activity and initiative, differences in the thesauri of communicators and their low communicative and communication competence; for messages – falsification of messages and imitation of the communication process; for communication channels – their mismatch and a feedback barrier; for the expected result – its mismatch; for a communication situation – the displacement of the actualization of events. According to the expert survey, among these barriers, the key ones are low activity and initiative of representatives of stakeholders, the desire to imitate the communication process instead of real dialogue and partnership, and the lack of feedback (lack of reaction of some stakeholders to the actions of others).

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Gordon, Jean K. "Factor Analysis of Spontaneous Speech in Aphasia." Journal of Speech, Language, and Hearing Research 63, no. 12 (December 14, 2020): 4127–47. http://dx.doi.org/10.1044/2020_jslhr-20-00340.

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Purpose Spontaneous speech tasks are critically important for characterizing spoken language production deficits in aphasia and for assessing the impact of therapy. The utility of such tasks arises from the complex interaction of linguistic demands (word retrieval, sentence formulation, articulation). However, this complexity also makes spontaneous speech hugely variable and difficult to assess. The current study aimed to simplify the problem by identifying latent factors underlying performance in spontaneous speech in aphasia. The ecological validity of the factors was examined by examining how well the factor structures corresponded to traditionally defined aphasia subtypes. Method A factor analysis was conducted on 17 microlinguistic measures of narratives from 274 individuals with aphasia in AphasiaBank. The resulting factor scores were compared across aphasia subtypes. Supervised (linear discriminant analysis) and unsupervised (latent profile analysis) classification techniques were then conducted on the factor scores and the solutions compared to traditional aphasia subtypes. Results Six factors were identified. Two reflected aspects of fluency, one at the phrase level (Phrase Building) and one at the narrative level (Narrative Productivity). Two other factors reflected the accuracy of productions, one at the word level (Semantic Anomaly) and one at the utterance level (Grammatical Error). The other two factors reflected the complexity of sentence structures (Grammatical Complexity) and the use of repair behaviors (Repair), respectively. Linear discriminant analyses showed that only about two thirds of speakers were classified correctly and that misclassifications were similar to disagreements between clinical diagnoses. The most accurately diagnosed syndromes were the largest groups—Broca's and anomic aphasia. The latent profile analysis also generated profiles similar to Broca's and anomic aphasia but separated some subtypes according to severity. Conclusions The factor solution and the classification analyses reflected broad patterns of spontaneous speech performance in a large and representative sample of individuals with aphasia. However, such data-driven approaches present a simplified picture of aphasia patterns, much as traditional syndrome categories do. To ensure ecological validity, a hybrid approach is recommended, balancing population-level analyses with examination of performance at the level of theoretically specified subgroups or individuals. Supplemental Material https://doi.org/10.23641/asha.13232354

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Ananth Rao, Ananya, and Prof Venkatesh S. "Identification of Aphasia using Natural Language Processing." Journal of University of Shanghai for Science and Technology 23, no. 06 (June 28, 2021): 1737–47. http://dx.doi.org/10.51201/jusst/21/06488.

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Aphasia is a neurological disorder of language that precludes a person’s ability to speak, understand, read or write in any language. By virtue of this disorder being inextricably connected to language, there is a vast potential for the application of Natural Language Processing (NLP) for the diagnosis of the disorder. This paper surveys the automated machine-learning-based classification methodologies followed by an attempt to discuss a potential way in which an NLP-backed methodology could be implemented along with its accompanying challenges. It is seen that the need for standardized technology-based diagnostic solutions necessitates the exploration of such a methodology.

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Scott, Craig R., and SoeYoon Choi. "Top secret from the bottom up." Corporate Communications: An International Journal 22, no. 4 (October 2, 2017): 556–61. http://dx.doi.org/10.1108/ccij-08-2017-0072.

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Purpose The emerging area of message classification is one of growing relevance to a wide range of organizational communicators as a variety of non-state organizations and their members increasingly use and misuse various terms to restrict their communication. This includes formal classifications for data security, financial/knowledge management, human resources, and other functions as well as those used informally by organizational members. Especially in a data-rich environment where our word-processing programs, e-mail tools, and other technologies afford us opportunities to engage in classification, a wide range of people at all organizational levels may serve as custodians of their own data and thus have the ability (as well as perhaps the need) to classify messages in various ways. The purpose of this paper is to describe key classification terms ranging from those found in government (e.g. top secret, confidential) to those in the private sector (e.g. business use only, trademarked) to an even wider set of terms used informally by organizational members (e.g. personal, preliminary). The growing use of message classifications will likely create various challenges and opportunities for organizations, their members, and the broader public/society. A set of future research questions is offered for corporate communication researchers and practitioners, who are well positioned to examine this emerging phenomenon. Design/methodology/approach This paper draws on existing literature related to the growing use of message classifications to offer a list of classification terms and an agenda for future research. Findings This work describes key classification terms ranging from those found in government (e.g. top secret, confidential) to those in the private sector (e.g. business use only, trademarked) to an even wider set of terms used informally by organizational members (e.g. personal, preliminary). This expanded notion of classification will likely create various challenges and opportunities for organizations, their members, and the broader public/society. Originality/value The emerging area of message classification is one of growing relevance to a wide range of organizational communicators as a variety of non-state organizations and their members increasingly use and misuse various terms to restrict their communication. A set of future research questions is offered for corporate communication researchers and practitioners, who are well positioned to examine this emerging phenomenon.

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Sulyatytskyy, I., and Ya Kravets. "SOCIO-PSYCHOLOGICAL PRINCIPLES OF TREATMENT FOR APHASIA AS TYPICAL SPEECH DISORDER AFTER STROKE." Pedagogical education: theory and practice. Psychology. Pedagogy, no. 30 (2018): 86–89. http://dx.doi.org/10.28925/2311-2409.2018.30.8689.

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The article deals with consolidated socio-psychological approach to conducting qualified rehabilitation process for people affected with a spectrum of speech disorders as a result of the stroke. It provides a brief overview on modern concepts of speech disorders in case of local and organic brain lesion, explores crucial issues of developing adapted procedures, techniques and exercises for giving special psychocorrective assistance for aphasia affected people as a result of brain lesion including people with post-stroke aphasia conditions. It considers neuropsychological classifications of aphasia disorders in case of organic brain lesion in home and foreign scientific works. It clarifies the grounds for classification of cognitive sphere symptoms in the process of identification the certain aphasia type. the applicative tasks of the article include showing the necessity of using modern intercultural (socio-psychological) experience of aphasia treatment methods as an approach of psychocorrective assistance for people in post-stroke condition, the efficacy of which were practically tested and presented in this research.

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Threats, Travis T. "Severe Aphasia: Possible Contributions of Using the ICF in Assessment." Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders 19, no. 1 (April 2009): 7–14. http://dx.doi.org/10.1044/nnsld19.1.7.

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Abstract Purpose: This article discusses the use of the World Health Organization's International Classification of Functioning, Disability, and Health (ICF) in the evaluation of persons with severe aphasia. Method: Patterson and Chapey's (2008) descriptions of the hallmarks of the assessment in aphasia are presented. The ICF is described and examined in terms of whether it could be beneficial in meeting these hallmarks. Results and Conclusions: The ICF is demonstrated to be able to contribute towards meeting the goals of this evaluation framework. It is concluded that use of the ICF by clinicians could assist in meeting the special challenges of conducting quality assessments of persons with severe aphasia.

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Mesulam, M. M., C. Wieneke, C. Thompson, E. Rogalski, and S. Weintraub. "Quantitative classification of primary progressive aphasia at early and mild impairment stages." Brain 135, no. 5 (April 23, 2012): 1537–53. http://dx.doi.org/10.1093/brain/aws080.

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Mesulam, M. M., and S. Weintraub. "Is it time to revisit the classification guidelines for primary progressive aphasia?" Neurology 82, no. 13 (March 5, 2014): 1108–9. http://dx.doi.org/10.1212/wnl.0000000000000272.

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MCCLEARY, C. "Semantic classification in aphasia: A study of basic, superordinate, and function relations." Brain and Language 27, no. 2 (March 1986): 199–209. http://dx.doi.org/10.1016/0093-934x(86)90015-5.

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Lee, Jaime B., and Leora R. Cherney. "Computer-Based Treatments for Aphasia: Advancing Clinical Practice and Research." Perspectives of the ASHA Special Interest Groups 1, no. 2 (March 31, 2016): 5–17. http://dx.doi.org/10.1044/persp1.sig2.5.

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A growing body of literature has investigated the efficacy of computer-based treatments for people with aphasia. In this narrative review, we describe a representative sample of 12 studies that were selected from a survey of the literature including a search of PubMed and PsychInfo online databases, using the key words “computer” and “aphasia” in the title and abstract fields. The sample illustrates a range of research designs, experimental interventions targeting various language modalities and International Classification of Functioning, Disability and Health (ICF) domains, and outcomes. We discuss the clinical and research advantages and limitations of computer-based treatment, as well as the benefits to persons with aphasia. We also highlight the role of the clinician in critically evaluating computerized treatments, identifying the active ingredients of the intervention, and ensuring that tasks are appropriate for their clients with aphasia.

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Magnin, Eloi. "Classification and stratification of primary progressive aphasia: CSF biomarkers as a useful tool?" Journal of Neurology, Neurosurgery & Psychiatry 83, no. 7 (June 4, 2012): 671. http://dx.doi.org/10.1136/jnnp-2012-302534.

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Botha, Hugo, Joseph R. Duffy, Jennifer L. Whitwell, Edythe A. Strand, Mary M. Machulda, Christopher G. Schwarz, Robert I. Reid, et al. "Classification and clinicoradiologic features of primary progressive aphasia (PPA) and apraxia of speech." Cortex 69 (August 2015): 220–36. http://dx.doi.org/10.1016/j.cortex.2015.05.013.

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Holland, Audrey L. "Recent Advances and Future Directions in Aphasia Therapy." Brain Impairment 9, no. 2 (September 1, 2008): 179–90. http://dx.doi.org/10.1375/brim.9.2.179.

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AbstractThis article reviews literature in aphasia rehabilitation in the English-speaking world. Although attempts have been made to incorporate literature from other continents, the major bias is toward North America. Four themes are emphasised. They are (1) advances in neuroscience that have already realised influences in language rehabilitation and some that have potential influence for the near future; (2) effects on language rehabilitation that have resulted from the worldwide acknowledgment and acceptance of the International Classification of Functioning, Disability, and Health (ICF); (3) the growing emergence of psychosocial concerns in the management of aphasia; and (4) present and future applications of technology to aphasia rehabilitation. For the sake of manageability, the review is largely limited to the rehabilitation literature of the decade from 1998, and to published or in-press work that is programmatic in the sense that it represents more than a single publication.

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Tetzloff, Katerina A., Joseph R. Duffy, Heather M. Clark, Rene L. Utianski, Edythe A. Strand, Mary M. Machulda, Hugo Botha, et al. "Progressive agrammatic aphasia without apraxia of speech as a distinct syndrome." Brain 142, no. 8 (June 14, 2019): 2466–82. http://dx.doi.org/10.1093/brain/awz157.

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Abstract Agrammatic aphasia affects grammatical language production and can result from a neurodegenerative disease. Although it typically presents with concomitant apraxia of speech, this is not always the case. Little is known about the clinical course and imaging features of patients that present with agrammatism in the absence of apraxia of speech, which we will refer to as progressive agrammatic aphasia. We aimed to make a detailed description of the longitudinal clinical, linguistic, and neuroimaging features of a cohort of 11 patients with progressive agrammatic aphasia to provide a complete picture of this syndrome. All patients underwent detailed speech and language, neurological and neuropsychological assessments, 3 T structural and diffusion tensor imaging MRI, 18F-fluorodeoxyglucose and Pittsburgh compound B PET. The 11 patients were matched by age and gender to 22 patients who had mixed apraxia of speech and agrammatism. The progressive agrammatic aphasia patients performed abnormally on tests of language, general cognition, executive function, and functional ability at baseline and declined in these measures over time. Only two patients eventually developed apraxia of speech, while parkinsonism was absent-to-mild throughout all visits for all patients. When compared to the patients with mixed apraxia of speech and agrammatism, the patients with progressive agrammatic aphasia performed better on tests of motor speech and parkinsonism but more poorly, and declined faster over time, on tests of general aphasia severity, agrammatism, and naming. The patients with progressive agrammatic aphasia also showed different neuroimaging abnormalities, with greater atrophy, hypometabolism and white matter tract degeneration in the prefrontal and anterior temporal lobes compared to patients with mixed apraxia of speech and agrammatism. These differences were more pronounced as the disease progressed. These results demonstrate that progressive agrammatic aphasia has a different clinical disease course and different underlying neuroanatomical abnormalities than patients with the more common syndrome of mixed agrammatism and apraxia of speech. This supports the distinction of progressive agrammatic aphasia and has implications for the classification of patients with agrammatic aphasia.

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Maruta, Carolina, Telma Pereira, Sara C. Madeira, Alexandre De Mendonça, and Manuela Guerreiro. "Classification of primary progressive aphasia: Do unsupervised data mining methods support a logopenic variant?" Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration 16, no. 3-4 (April 14, 2015): 147–59. http://dx.doi.org/10.3109/21678421.2015.1026266.

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Bonner, Michael F., Sharon Ash, and Murray Grossman. "The New Classification of Primary Progressive Aphasia into Semantic, Logopenic, or Nonfluent/Agrammatic Variants." Current Neurology and Neuroscience Reports 10, no. 6 (September 1, 2010): 484–90. http://dx.doi.org/10.1007/s11910-010-0140-4.

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Oliveira, Fabricio F., and Benito P. Damasceno. "Short-term prognosis for speech and language in first stroke patients." Arquivos de Neuro-Psiquiatria 67, no. 3b (September 2009): 849–55. http://dx.doi.org/10.1590/s0004-282x2009000500013.

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OBJECTIVE: To evaluate the factors that can influence evolution of communication after a first stroke. METHOD: Thirty-seven adult patients were evaluated for speech and language within 72 hours after a single first-ever ischemic brain injury and later on. Patients who were comatose, with decompensated systemic diseases, or history of chronic alcoholism or illicit drug use were not included. Brain CT and/or 2T-MR exams were solicited for topographic correlation. Size of infarct was classified as large or small according to the TOAST classification. RESULTS: Patients who survived had lesser chances of presenting with aphasia or dysarthria 3 months after the stroke if the infarct size was small (p=0.017). Gender, age, schooling, aphasia subtype, infarct side and topography were non-significant in our sample. Subjects with global aphasia or lone cortical dysarthria had a slower evolution. CONCLUSION: Brain injury size was the most influential factor for neurological outcome at 3 months post-stroke.

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Wulandari, Suci. "UJARAN PENDERITA AFASIA MOTORIK KARENA STROK DI STAF MEDIS FUNGSIONAL PENYAKIT SARAF RSUD dr. SOETOMO SURABAYA (STUDI KASUS MORFOSINTAKSIS DALAM TINJAUAN NEUROLINGUISTIK)." TELAGA BAHASA 7, no. 2 (January 15, 2020): 217–30. http://dx.doi.org/10.36843/tb.v7i2.168.

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Tulisan ini bertujuan mendeskripsikan ujaran penderita Afasia Motorik karena Stroke melalui klasifikasi ujaran penderita Afasia motorik dalam tataran morfologi dengan analisis ujaran berdasarkan proses morfologis bahasa Indonesia. Tataran dalam bidang sintaksis yaitu dengan cara klasifikasi ujaran penderita Afasia Motorik karena stroke ke dalam fungsi sintaksis dan hubungan fungsional antarkata/frase dalam klausa atau kalimat. Metode pengumpulan data pada tulisan ini menggunakan metode simak (observasi) dan dibantu dengan teknik rekam, teknik catat, dan teknik pustaka. Metode yang digunakan dalam tulisan ini bersifat deskriptif kualititatif. Informan yang yang terdapat dalam tulisan ini terdiri dari enam, yaitu PAMS1, PAMS2, PAMS3, PAMS4, PAMS5, dan PAMS6. Data yang diperoleh kemudian ditranskripsikan dan dianalisis berdasarkan klasifikasinya. Hasil dari analisis data ini menunjukkan bahwa penderita Afasia motorik mengalami gangguan bahasa dalam tataran morfologi dan sintaksis bahasa Indonesia. Dalam ranah morfologi PAMS sulit mengujarkan dan bahkan menghilangkan prefiks –ber, -men, dan –ter. Pada infiks PAMS menghilangkan sisipan –em, dan –er. Pengujaran kata yang tergolong ke dalam proses reduplikasi dan komposisi dapat diucapkan, akan tetapi PAMS melesapkan atau menghilangkan reduplikasi dengan pembubuhan afiks dan sulit mengucapkan fonem bunyi [r]. Kemampuan dalam tataran sintaksis PAMS belum dapat mengucapkan unsur-unsur kalimat yang menduduki fungsi S, P, O dan hanya mampu mengucapkan fungsi Ket. Kata kunci:Morfosintaksis, Afasia Motorik, Stroke, Neurolinguistik. AbstractThe research entitled "The speech of Motor Aphasia Patients caused by a Stroke in SMF Neurological Disease RSUD. Dr. Soetomo Surabaya (study case of Morphosyntax in Neurolinguistic Review" aimed to describe the speech of patients with motor aphasia due to stroke through the classification speech of patients with motor aphasia in morphology level with speech analysis based on the morphological process of Indonesian language. The stability in the field of syntax is by means of classification of speech sufferers of motor aphasia due to stroke into syntactic function and functional relationship between phrases/phrases in clauses or sentences. This research used a descriptive method. The data collection used observation which was assisted by recording, note-taking, and literature review techniques. The informants contained in this research consist of six patients are PAMS-1, PAMS-2, PAMS-3, PAMS-4, PAMS-5, and PAMS-6. The data obtained then transcribed and analyzed by their classification. The data analysis results indicated that patients with motor aphasia have language disorders in the morphology level and syntax of the Indonesian language. In terms of morphology PAMS was trouble to say and even remove prefixes -ber, -men, and -ter. From infix pronunciation, PAMS removes infix -em, and -er. The pronunciation of a classified word to process reduplication and composition can be pronounced, but PAMS distorts or eliminates reduplication by affix affixing and it is difficult to say the sound phoneme [r]. Ability in the syntactic level PAMS can not pronounce the elements of a sentence that occupies the function S, P, O and is only capable of pronouncing the function of Ket.Keywords: Morphosyntax, Motor Aphasia, Stroke, Neurolinguistic.

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Kertesz, Andrew, and Elizabeth Poole. "The Aphasia Quotient: The Taxonomic Approach to Measurement of Aphasic Disability." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 31, no. 2 (May 2004): 175–84. http://dx.doi.org/10.1017/s0317167100120736.

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Summary150 aphasiacs and 59 controls were examined with a scorable, comprehensive battery, designed to be used by the clinician and the research worker. The subtests of Fluency, Information, Comprehension, Repetition and Naming were added and compared to a hypothetical normal of 100 obtaining the “aphasia Quotient.” This is a measurement of the severity of language impairment. On the basis of their performance on the subtests, the patients were classified according to taxonomic principles into Global, Motor (Broca’s), Isolation, Sensory (Wernicke’s), Transcortical Motor, Transcortical Sensory, Conduction and Anomic groups (in order of severity). This classification is considered a clinically valid baseline for research, diagnosis and prognosis.

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Neophytou, Kyriaki, Robert W. Wiley, Brenda Rapp, and Kyrana Tsapkini. "The use of spelling for variant classification in primary progressive aphasia: Theoretical and practical implications." Neuropsychologia 133 (October 2019): 107157. http://dx.doi.org/10.1016/j.neuropsychologia.2019.107157.

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Sajjadi, S. A., K. Patterson, M. Tomek, R. J. Arnold, and P. J. Nestor. "037 A data-driven assessment of the proposed criteria for classification of primary progressive aphasia." Journal of Neurology, Neurosurgery & Psychiatry 83, no. 3 (February 9, 2012): e1.201-e1. http://dx.doi.org/10.1136/jnnp-2011-301993.79.

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Dorschel, Robert. "Discovering needs for digital capitalism: The hybrid profession of data science." Big Data & Society 8, no. 2 (July 2021): 205395172110407. http://dx.doi.org/10.1177/20539517211040760.

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Over the last decade, ‘data scientists’ have burst into society as a novel expert role. They hold increasing responsibility for generating and analysing digitally captured human experiences. The article considers their professionalization not as a functionally necessary development but as the outcome of classification practices and struggles. The rise of data scientists is examined across their discursive classification in the academic and economic fields in both the USA and Germany. Despite notable differences across these fields and nations, the article identifies two common subjectivation patterns. Firstly, data scientists are constructed as hybrids, who combine generally conflictive roles as both generalists and specialists; technicians and communicators; data exploiters and data ethicists. This finding is interpreted as demonstrating a discursive distinction between data scientists and other competing and supposedly more one-dimensional professionals, such as statisticians or computer scientists. Secondly, the article uncovers a discursive construction that interpellates data scientists as discoverers of needs. They are imagined as explorative work subjects who can establish growth for digital capitalism by generating behavioural patterns that allow for personalization, customization and optimization practices.

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Journal articles on the topic 'Classification of Communicators with Aphasia'

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