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Journal articles on the topic 'Non-specific EEG changes'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Andraus, Maria Emilia Cosenza, and Soniza Vieira Alves-Leon. "Non-epileptiform EEG abnormalities: an overview." Arquivos de Neuro-Psiquiatria 69, no. 5 (2011): 829–35. http://dx.doi.org/10.1590/s0004-282x2011000600020.

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More than 80 years after its introduction by Hans Berger, the electroencephalogram (EEG) remains as an important supplementary examination in the investigation of neurological disorders and gives valuable and accurate information about cerebral function. Abnormal EEG findings may include ictal patterns, interictal epileptiform activity and non-epileptiform abnormalities. The aim of this study is to make an overview on the main non-epileptiform EEG abnormalities, emphasizing the pathologic findings and the importance of their recognition, excluding periodic patterns and EEG physiologic changes.

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Büyükgöze, Selma. "NON-INVASIVE BCI METHOD: EEG - ELECTROENCEPHALOGRAPHY." International Conference on Technics, Technologies and Education, ICTTE 2019 (2019): 139–45. http://dx.doi.org/10.15547/ictte.2019.02.095.

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Brain Computer Interface consists of hardware and software that convert brain signals into action. It changes the nerves, muscles, and movements they produce with electro-physiological signs. The BCI cannot read the brain and decipher the thought in general. The BCI can only identify and classify specific patterns of activity in ongoing brain signals associated with specific tasks or events. EEG is the most commonly used non-invasive BCI method as it can be obtained easily compared to other methods. In this study; It will be given how EEG signals are obtained from the scalp, with which waves t

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Nikishkova, Iryna, and Damir Kutikov. "A practical value of systematic reviews and meta-analyses on prevalence of EEG abnormalities in COVID-19." Ukrains'kyi Visnyk Psykhonevrolohii, Volume 30, issue 4 (113), 2022 (January 5, 2023): 23–29. http://dx.doi.org/10.36927/2079-0325-v30-is4-2022-4.

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During the COVID-19 pandemics, the amount and volume of electroencephalographic (EEG) examinations have been limited for safety reasons. This has complicated not only an identification of specific EEG correlates of the disease but also an assessment of non-specific EEG changes in pa- tients with COVID-19, raising the question of detection of factors and the degree of their impact on prevalence of EEG abnormalities in COVID-19. In the PubMed database, three meta-analyses and three systematic reviews were selected on keywords “COVID-19”, “EEG”, “systematic review”, and “meta-analysis” in order t

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Opačić, A., and V. Ivetić. "NEUROPHYSIOLOGIC CORRELATES OF EPILEPSY IN COMPLEX FEBRILE SEIZURES." Praxis medica 37, no. 2 (2009): 65–67. http://dx.doi.org/10.70949/pramed200902297o.

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&lt;p&gt;Febrile seizures are the most common neurological disorder of early childhood. By expressing the characteristics febrile seizures are divided into simple and complex. Our aim was to determine the elektroencephalography characteristics in children who had febrile seizures, and determine the relation between types of febrile seizures correlates with the appearance of epilepsy in children aged 9-11 years. In the group of children studied, 50% had a complex febrile seizures, 42.2% had simple febrile seizures, and 7.8% children had febrile epileptic status. The analysis of EEG find

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Friess, E., H. Tagaya, L. Trachsel, F. Holsboer, and R. Rupprecht. "Progesterone-induced changes in sleep in male subjects." American Journal of Physiology-Endocrinology and Metabolism 272, no. 5 (1997): E885—E891. http://dx.doi.org/10.1152/ajpendo.1997.272.5.e885.

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Progesterone administration induces a reduction of the vigilance state in humans during wakefulness. It has been been suggested that this effect is mediated via neuroactive metabolites that interact with the gamma-aminobutyric, acidA (GABAA) receptor complex. To investigate the effects of progesterone administration on the sleep electroencephalogram (EEG) in humans we made polysomnographic recordings, including sleep stage-specific spectral analysis, and concomitantly measured plasma concentrations of progesterone and its GABA-active metabolites 3 alpha-hydroxy-5 alpha-dihydroprogesterone (all

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Badrakalimuthu, Vellingiri Raja, Radhika Swamiraju, and Hugo de Waal. "EEG in psychiatric practice: to do or not to do?" Advances in Psychiatric Treatment 17, no. 2 (2011): 114–21. http://dx.doi.org/10.1192/apt.bp.109.006916.

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SummaryElectroencephalography (EEG) is a non-invasive investigation that can aid the diagnosis of psychiatric and neuropsychiatric disorders. A good predictor of an abnormal EEG recording is the presence of an organic factor identified during the clinical assessment. The non-invasiveness and low cost of the procedure and its ability to measure spontaneous brain activity appear to attract clinicians to utilise this investigative tool. However, studies have reported that EEGs arising from psychiatric referrals have the lowest abnormality detection rate. The focus of this article is to improve th

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Kopańska, Marta, Agnieszka Banaś-Ząbczyk, Anna Łagowska, Barbara Kuduk, and Jacek Szczygielski. "Changes in EEG Recordings in COVID-19 Patients as a Basis for More Accurate QEEG Diagnostics and EEG Neurofeedback Therapy: A Systematic Review." Journal of Clinical Medicine 10, no. 6 (2021): 1300. http://dx.doi.org/10.3390/jcm10061300.

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Introduction and purpose: The SARS-CoV-2 virus is able to cause abnormalities in the functioning of the nervous system and induce neurological symptoms with the features of encephalopathy, disturbances of consciousness and concentration and a reduced ability to sense taste and smell as well as headaches. One of the methods of detecting these types of changes in COVID-19 patients is an electroencephalogram (EEG) test, which allows information to be obtained about the functioning of the brain as well as diagnosing diseases and predicting their consequences. The aim of the study was to review the

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Juan, Elsa, Jan Novy, Tamarah Suys, Mauro Oddo, and Andrea O. Rossetti. "Clinical evolution after a non-reactive hypothermic EEG following cardiac arrest." Neurocritical Care 22, no. 3 (2015): 403–8. https://doi.org/10.1007/s12028-014-0095-4.

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BACKGROUND: Lack of electroencephalography (EEG) background reactivity during therapeutic hypothermia (TH) has been associated with poor outcome in post-anoxic comatose patients. However, decision on intensive care withdrawal is based on normothermic (NT) evaluations. This study aims at exploring whether patients showing recovery of EEG reactivity in NT after a non-reactive EEG in TH differ from those remaining non-reactive. METHODS: Patients with non-reactive EEG during TH were identified from our prospective registry of consecutive comatose adults admitted after successful resuscitation from

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Lancel, M., J. Cronlein, P. Muller-Preuss, and F. Holsboer. "Lipopolysaccharide increases EEG delta activity within non-REM sleep and disrupts sleep continuity in rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 268, no. 5 (1995): R1310—R1318. http://dx.doi.org/10.1152/ajpregu.1995.268.5.r1310.

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Activation of the immune system by microorganisms or specific microbial constituents promotes non-rapid-eye-movement (REM) sleep (non-REMS). In this study, we assessed the effects of lipopolysaccharide (LPS) on sleep duration, electroencephalogram (EEG) power spectra, and brain temperature (Tbr) in rats. Twenty-four hour recordings were made before and after intraperitoneal injection of vehicle or 30 or 100 micrograms/kg LPS at lights on. During the first 12 h after administration of both doses of LPS, Tbr was elevated, REMS duration was reduced, and non-REMS duration was unchanged, whereas th

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Khazaei, Mohammad, Khadijeh Raeisi, Pierpaolo Croce, et al. "Characterization of the Functional Dynamics in the Neonatal Brain during REM and NREM Sleep States by means of Microstate Analysis." Brain Topography 34, no. 5 (2021): 555–67. http://dx.doi.org/10.1007/s10548-021-00861-1.

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AbstractNeonates spend most of their life sleeping. During sleep, their brain experiences fast changes in its functional organization. Microstate analysis permits to capture the rapid dynamical changes occurring in the functional organization of the brain by representing the changing spatio-temporal features of the electroencephalogram (EEG) as a sequence of short-lasting scalp topographies—the microstates. In this study, we modeled the ongoing neonatal EEG into sequences of a limited number of microstates and investigated whether the extracted microstate features are altered in REM and NREM s

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Lancel, Marike, Johannes Faulhaber, Thomas Schiffelholz, Stefan Mathias, and Rudolf A. Deisz. "Muscimol and Midazolam Do Not Potentiate Each Other's Effects on Sleep EEG in the Rat." Journal of Neurophysiology 77, no. 3 (1997): 1624–29. http://dx.doi.org/10.1152/jn.1997.77.3.1624.

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Lancel, Marike, Johannes Faulhaber, Thomas Schiffelholz, Stefan Mathias, and Rudolf A. Deisz. Muscimol and midazolam do not potentiate each other's effects on sleep EEG in the rat. J. Neurophysiol. 77: 1624–1629, 1997. The interaction of a γ-aminobutyric acid-A (GABAA) receptor agonist and a benzodiazepine-type modulator of GABAA receptors on sleep was investigated. Low doses of muscimol (0.3 mg/kg) and the benzodiazepine midazolam (1.5 mg/kg) were administered alone and incombination, in random order, to eight rats. All injections were given intraperitoneally at light onset. Electroencephalog

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Illert, M., H. Wiese, and U. Wolfram. "Electroencephalography and evoked potentials: a PC-based analysis program for laboratory courses in physiology." Advances in Physiology Education 263, no. 6 (1992): S16. http://dx.doi.org/10.1152/advances.1992.263.6.s16.

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A computer program (EEG Analysis) was developed for the preclinical laboratory course in physiology held for medical and dental students. It offers an off-line analysis of a set of typical and frequently occurring physiological and pathological electroencephalogram (EEG) and evoked potential (EP) recordings, which are stored in an IBM-compatible personal computer (PC) system. The users are requested to measure and analyze the data sets and to work through a base of questions relevant in the frame of the particular topic. The program is structured in several exercises: calibration, pickup of no

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Singh, Mahima, Ammar Muhammad, and Faisal R. Jahangiri. "Electroencephalography (EEG) in Psychiatry: A Review Article." Journal of Neurophysiological Monitoring 1, no. 1 (2023): 44–50. https://doi.org/10.5281/zenodo.10207987.

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It is estimated that today, about 500 million people live with a mental health disorder.  The broad definition of mental disorders includes depression, anxiety, bipolar, eating disorders, and schizophrenia, among others. Mental health disorders are diagnosed by licensed psychiatrists who often use DSM-5 to make a diagnosis. Still, considering the neurological bases of most psychiatric disorders, we can confidently say that psychiatry and neuroscience are interdependent. Most prevalent mental disorders, such as depression and generalized anxiety, are associated with structural and function

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Prayag, Abhishek, Mirjam Münch, Daniel Aeschbach, Sarah Chellappa, and Claude Gronfier. "Light Modulation of Human Clocks, Wake, and Sleep." Clocks & Sleep 1, no. 1 (2019): 193–208. http://dx.doi.org/10.3390/clockssleep1010017.

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Light, through its non-imaging forming effects, plays a dominant role on a myriad of physiological functions, including the human sleep–wake cycle. The non-image forming effects of light heavily rely on specific properties such as intensity, duration, timing, pattern, and wavelengths. Here, we address how specific properties of light influence sleep and wakefulness in humans through acute effects, e.g., on alertness, and/or effects on the circadian timing system. Of critical relevance, we discuss how different characteristics of light exposure across the 24-h day can lead to changes in sleep–w

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Bureau, Michelle, Ozlem Cokar, Bruno Maton, Pierre Genton, and Charlotte Dravet. "Sleep‐related, low voltage Rolandic and vertex spikes: an EEG marker of benignity in infancy‐onset focal epilepsies." Epileptic Disorders 4, no. 1 (2002): 15–22. http://dx.doi.org/10.1684/j.1950-6945.2002.tb00431.x.

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ABSTRACT Although benign forms of epilepsies with onset in infancy have recently been recognized, the occurrence of seizures in an infant or very young child is very often an event of great significance and the prognosis concerning both epilepsy and neuropsychological development must be guarded. No reliable clinical or electroencephalographic (EEG) markers that can predict the outcome have been described. In a retrospective series of 10 patients, we found a peculiar EEG pattern seen across sleep stages, but not in the waking state in infants whose first seizures appeared before the age of 1 y

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Stassen, H. H. "The Similarity Approach to EEG Analysis." Methods of Information in Medicine 24, no. 04 (1985): 200–212. http://dx.doi.org/10.1055/s-0038-1635378.

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SummaryA method of approach to EEG analysis has been proposed which is based upon the concept of similarity. It especially aims at the analysis of the between-subject and within-subject similarity of EEG spectral patterns by means of adaptive procedures. Repeated measurements from the same individual were used as design samples, and new registrations after 14 days were referred to as test samples in order to determine the calibration parameters of the approach. The discrimination between the distributions of between-subject and within-subject similarity coefficients served as the criterion for

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Rivera-Tello, Sergio, Vladimir Huerta-Chávez, and Julieta Ramos-Loyo. "Actividad eléctrica cerebral: métodos de registro y análisis y sus implicaciones en la organización funcional del cerebro." e-CUCBA 10, no. 19 (2022): 204–12. http://dx.doi.org/10.32870/ecucba.vi19.280.

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The electroencephalogram (EEG) is a non-invasive technique that allows the evaluation of brain electrical activity. It has beenadvantageous over the years to assess the brain ́s functional organization in healthy populations and those with variouspathologies. This review aims to provide a general overview of the EEG, including the neurophysiological origin of brainelectrical activity, the component frequency bands, and the analysis methods commonly applied in research. There is still a lotto know about the meaning of the changes generated in the different brain rhythms related to age during in

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Lucena, Marília Marinho de, Igor Tchaikovsky Mello de Oliveira, Jeniffer Emídio de Almeida Albuquerque, Wellington Pinheiro dos Santos, Belmira Lara da Silveira Andrade da Costa, and Marcelo Cairrão Araújo Rodrigues. "Non-periodic acoustic stimulation: preliminar reports of an alternative therapeutic for epilepsy." Núcleo do Conhecimento 05, no. 06 (2023): 98–114. https://doi.org/10.32749/nucleodoconhecimento.com.br/health/alternative-therapeutic.

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Being refractory is a significant challenge for one third of patients with epilepsy, and there is a need for new treatments. Non-periodic Stimulation (NPS) has shown promise in animal models, but it involves invasive technology. Consequently, non-invasive non-periodic Acoustic Non-periodic Stimulation (ANPS) has been developed based on NPS, with the hope that it could offer anticonvulsant effects. However, it is essential to ensure the safety of ANPS, particularly in individuals with refractory epilepsy, before it can be used in a specific application. To this end, this study aimed to assess t

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Kim, Min Soo, Young Chang Cho, Joo Hyun Moon, and Sok Cheon Pak. "A Characteristic Estimation of Bio-Signals for Electro-Acupuncture Stimulations in Human Subjects." American Journal of Chinese Medicine 37, no. 03 (2009): 505–17. http://dx.doi.org/10.1142/s0192415x09007016.

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This research evaluates the effect of physiological responses during electrical acupuncture (EA) stimulation on specific acupuncture points (APs: PC5 and PC6). A variety of special responses in the human body were determined by electroencephalogram (EEG), heart rate (HR) in an electrocardiogram (ECG), and skin impedance test for 2 groups, sham group as a control and a group under acupuncture stimulation. The total stimulation time in this study was set for 5 min since the effect of EA on all recorded parameters became stable within this period. According to the experiments, during EA stimulati

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Mullins, Anna, Ankit Parekh, Korey Kam, et al. "0461 Parietal EEG Slow Activity During NREM Is Associated with Overnight Spatial Memory Performance in CPAP-treated OSA." SLEEP 47, Supplement_1 (2024): A198—A199. http://dx.doi.org/10.1093/sleep/zsae067.0461.

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Abstract Introduction Sleep disturbance from obstructive sleep apnea (OSA) impairs overnight memory processing which may be mediated by changes to slow wave sleep. Indeed, reduced region-specific EEG slow activity during non-REM sleep has been associated with worse overnight declarative, motor and spatial memory. Using a polysomnologically (PSG)-verified model of SWS-specific CPAP-withdrawal to create three conditions of 1) stable-SWS on CPAP, 2) SWS-fragmentation with intermittent hypoxemia (OSAsws), and 3) SWS-fragmentation with reduced hypoxemia (OSAsws+O2), we investigated whether CPAP wit

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Hamrahi, Hedieh, Richard Stephenson, Safraaz Mahamed, Kiong Sen Liao, and Richard L. Horner. "Selected Contribution: Regulation of sleep-wake states in response to intermittent hypoxic stimuli applied only in sleep." Journal of Applied Physiology 90, no. 6 (2001): 2490–501. http://dx.doi.org/10.1152/jappl.2001.90.6.2490.

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Recurrent sleep-related hypoxia occurs in common disorders such as obstructive sleep apnea (OSA). The marked changes in sleep after treatment suggest that stimuli associated with OSA (e.g., intermittent hypoxia) may significantly modulate sleep regulation. However, no studies have investigated the independent effects of intermittent sleep-related hypoxia on sleep regulation and recovery sleep after removal of intermittent hypoxia. Ten rats were implanted with telemetry units to record the electroencephalogram (EEG), neck electromyogram, and body temperature. After >7 days recovery, a comput

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Dong, Wenli, Weining Fang, Hanzhao Qiu, and Haifeng Bao. "Impact of Situation Awareness Variations on Multimodal Physiological Responses in High-Speed Train Driving." Brain Sciences 14, no. 11 (2024): 1156. http://dx.doi.org/10.3390/brainsci14111156.

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Background: In safety-critical environments, human error is a leading cause of accidents, with the loss of situation awareness (SA) being a key contributing factor. Accurate SA assessment is essential for minimizing such risks and ensuring operational safety. Traditional SA measurement methods have limitations in dynamic real-world settings, while physiological signals, particularly EEG, offer a non-invasive, real-time alternative for continuous SA monitoring. However, the reliability of SA measurement based on physiological signals depends on the accuracy of SA labeling. Objective: This study

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Cagnard, Florence, and Didier Lahondère. "Naturally Occurring Asbestos in France: Geological Mapping, Mineral Characterization, and Technical Developments." Environmental and Engineering Geoscience 26, no. 1 (2020): 53–59. http://dx.doi.org/10.2113/eeg-2277.

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ABSTRACT In France, asbestos was banned by national decree (no. 96-1133) in 1996. The regulatory texts and standards adopted to implement this ban are concerned primarily with asbestos-containing manufactured products and are difficult to apply to asbestos-bearing natural materials (i.e., rocks and soils). Considering problems related to asbestos-bearing natural materials, the French Ministry of Ecology, Sustainable Development, and Energy has mandated the French Geological Survey to map locations where asbestos-bearing rocks are found. Mapping was prioritized to geological domains where natur

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Gianlorenco, Anna Carolyna L., Paulo S. de Melo, Anna Marduy, et al. "Electroencephalographic Patterns in taVNS: A Systematic Review." Biomedicines 10, no. 9 (2022): 2208. http://dx.doi.org/10.3390/biomedicines10092208.

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Transcutaneous auricular vagus nerve stimulation (taVNS) is a newer delivery system using a non-invasive stimulation device placed at the ear. taVNS research is focused on clinical trials showing potential therapeutic benefits, however the neurophysiological effects of this stimulation on brain activity are still unclear. We propose a systematic review that aims to describe the effects of taVNS on EEG measures and identify taVNS parameters that can potentially lead to consistent EEG-mediated biomarkers for this therapy. A systematic literature review was carried out following the Preferred Rep

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Zulkifli, I., Y. M. Goh, B. Norbaiyah, et al. "Changes in blood parameters and electroencephalogram of cattle as affected by different stunning and slaughter methods in cattle." Animal Production Science 54, no. 2 (2014): 187. http://dx.doi.org/10.1071/an12128.

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The present study aimed to provide a comparative analysis of the effects of penetrative stunning, non-penetrative stunning and post-slaughter stunning on biochemical parameters and electroencephalogram (EEG) associated with stress in heifers and steers. Ten animals were assigned to each of the following four treatment groups: (1) animals were subjected to conventional halal slaughter (a clean incision through the structures on the ventral neck at the approximate level of vertebrae C2–C3 – the trachea, oesophagus, carotid arteries and jugular veins) and post-cut penetrating mechanical stun with

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Yu, Aihui, Qi Liu та Chenjing Sun. "The clinical value of EEG monitoring and silver nanoparticles to detect the levels of serum Nesfatin-1, S100β and neuron-specific enolase in evaluating the severity and prognosis of epilepsy". Materials Express 11, № 11 (2021): 1786–91. http://dx.doi.org/10.1166/mex.2021.2097.

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This study aimed to explore the clinical value of electroencephalogram (EEG) monitoring and the use of silver nanoparticles to detect serum levels of Nesfatin-1, S100β and Neuron-specific enolase (NSE) in assessing the severity and prognosis of epilepsy. A total of 54 epilepsy patients treated at our hospital from June 2017 to June 2019 were selected as the epilepsy group, and 54 healthy subjects were selected as the control group. EEG and serum levels of Nesfatin-1, S100β, and NSE in epilepsy patients without seizure and within 1 hour of seizure were ascertained and compared. The Liverpool Se

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Blackwood, D. H. R., and W. J. Muir. "Cognitive Brain Potentials and their Application." British Journal of Psychiatry 157, S9 (1990): 96–101. http://dx.doi.org/10.1192/s0007125000291897.

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Computerised averaging methods have made it possible to extract and identify the electrical activity accompanying specific activities of the brain, including certain psychological processes, from the random background signals in electroencephalography (EEG). Event-related potentials (ERPs) and the way these change under various recording conditions are a powerful, non-invasive and relatively simple means of relating psychopathology to underlying physiology, and by comparing ERPs with imaging data it should be possible to compare electrical activity with changes in brain structure and blood flo

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Lancel, M., J. Faulhaber, F. Holsboer, and R. Rupprecht. "Progesterone induces changes in sleep comparable to those of agonistic GABAA receptor modulators." American Journal of Physiology-Endocrinology and Metabolism 271, no. 4 (1996): E763—E772. http://dx.doi.org/10.1152/ajpendo.1996.271.4.e763.

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There is much evidence that progesterone has hypnotic anesthetic properties. In this vehicle-controlled study, we examined the effects of three doses of progesterone (30, 90, and 180 mg/kg) administered intraperitoneally at light onset on sleep in rats. Progesterone dose dependently shortened non-rapid eye movement sleep (NREMS) latency, lengthened rapid eye movement sleep (REMS) latency, decreased the amount of wakefulness and REMS, and markedly increased pre-REMS, an intermediate state between NREMS and REMS. Progesterone also elicited dose-related changes in sleep state-specific electroence

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Okuneva, I. V., M. V. Sinkin, A. I. Evdokimov, and A. V. Prirodov. "Electroencephalographic monitoring in detection and prediction of delayed cerebral ischemia due to non-traumatic subarachnoid hemorrhage." Epilepsy and paroxysmal conditions 16, no. 3 (2024): 231–40. http://dx.doi.org/10.17749/2077-8333/epi.par.con.2024.192.

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Intensive care of patients with acute non-traumatic subarachnoid hemorrhage primarily relies on diagnostics of delayed cerebral ischemia (DCI). The major difficulty in detecting DCI emerges upon suppression of wakefulness, when clinical assessment of growing neurological deficit becomes complicated. Widely used transcranial dopplerography allows solely to verify a vasospasm development not always leading to DCI exhibiting a multifactorial underlying mechanism. Electroencephalography (EEG) is the only broadly available instrumental tool ensuring a continuous monitoring of cerebral functional st

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Moretti, D. V., D. Paternicò, A. Prestia, G. Binetti, O. Zanetti, and G. B. Frisoni. "Theta Frequency is Associated to Morpho-Strcutural and Perfusional Modifications in Subjects with Mild Cognitive Impairment." Journal of Psychology and Psychotherapy Research 1, no. 1 (2014): 3–13. http://dx.doi.org/10.12974/2313-1047.2014.01.01.1.

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Background: In an attempt to find non-invasive biomarkers, researchers have investigated the feasibility of neuroimaging tools, such as MR, SPECT as well as neurophysiological measurements using EEG. The increase of theta frequency has been associated with mild cognitive impairment (MCI) and related to both grey matter (GM) changes of thalamus and basal ganglia and SPECT modifications. Objective: To study the association of prognostic theta frequency with specific GM and perfusional changes of thalamus and basal ganglia to detect biomarkers early predictive of mild cognitive impairment. Method

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Goshvarpour, Atefeh, Ataollah Abbasi, and Ateke Goshvarpour. "DYNAMICAL ANALYSIS OF EMOTIONAL STATES FROM ELECTROENCEPHALOGRAM SIGNALS." Biomedical Engineering: Applications, Basis and Communications 28, no. 02 (2016): 1650015. http://dx.doi.org/10.4015/s1016237216500150.

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The current study evaluates the dynamics of the electroencephalogram signals during specific emotional states in order to obtain a detailed understanding of the affective EEG patterns. Employing recurrence analysis, the dynamical states of the emotional brain during visual stimuli is evaluated. Three channels of electroencephalogram time series (Fz, Cz, and Pz) available in eNTERFACE06_EMOBRAIN database are used in this study. Electroencephalogram signals are recorded from 5 subjects in three emotional categories: exciting negative (disgust), neutral and exciting positive (happy). Recurrence q

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Friess, E., L. Trachsel, J. Guldner, T. Schier, A. Steiger, and F. Holsboer. "DHEA administration increases rapid eye movement sleep and EEG power in the sigma frequency range." American Journal of Physiology-Endocrinology and Metabolism 268, no. 1 (1995): E107—E113. http://dx.doi.org/10.1152/ajpendo.1995.268.1.e107.

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Dehydroepi-androsterone (DHEA) exhibits various behavioral effects in mammals, at least one of which is enhancement of memory that appears to be mediated by an interaction with the gamma-aminobutyric acidA (GABAA) receptor complex. We investigated the effects of a single oral dose of DHEA (500 mg) on sleep stages, sleep stage-specific electroencephalogram (EEG) power spectra, and concurrent hormone secretion in 10 healthy young men. DHEA administration induced a significant (P < 0.05) increase in rapid eye movement (REM) sleep, whereas all other sleep variables remained unchanged compared w

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Simfukwe, Chanda, Seong Soo A. An, and Young Chul Youn. "Time-Frequency Domain Analysis of Quantitative Electroencephalography as a Biomarker for Dementia." Diagnostics 15, no. 12 (2025): 1509. https://doi.org/10.3390/diagnostics15121509.

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Biomarkers currently used to diagnose dementia, including Alzheimer’s disease (AD), primarily detect molecular and structural brain changes associated with the condition’s pathology. Although these markers are pivotal in detecting disease-specific neuropathological hallmarks, their association with the clinical manifestations of dementia frequently remains poorly defined and exhibits considerable variability. These biomarkers may show abnormalities in cognitively healthy individuals and frequently fail to accurately represent the severity of cognitive and functional impairments in individuals

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Gjoneska, Biljana, Simona Markovska-Simoska, Hiie Hinrikus, Nada Pop-Jordanova, and Jordan Pop-Jordanov. "Brain Topography of Emf-Induced Eeg-Changes in Restful Wakefulness: Tracing Current Effects, Targeting Future Prospects." PRILOZI 36, no. 3 (2015): 103–12. http://dx.doi.org/10.1515/prilozi-2015-0085.

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Abstract Introduction: Covering a handful of decades but spanning across two centuries, mobile phones announced the dawn of the technological revolution, standing at the forefront as its′ most prominent symbol. Over the course of their sovereign dominance, human generations born with the birth of the mobile phone reached the age of maturity, while scientific community started reaching for experience-based perceptivity. Aim: The following review serves as a short-cut across a half-decade old research gap, and a clear-cut analysis on the cutting-edge knowledge of the EMF induced EEG changes. Mat

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Srinivas, Sujithra. "Review study on epileptiform discharge during sleep and circadian rhythm modulation during seizures." IP Indian Journal of Anatomy and Surgery of Head, Neck and Brain 8, no. 1 (2022): 4–7. http://dx.doi.org/10.18231/j.ijashnb.2022.002.

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Epilepsy is a neurological condition that affects approximately more than 50 million people around the globe, out of which the prevalence of this disease is also seen in developed countries. Epilepsy can be clinical defined by two or more non triggered seizures. A seizure can be characterized as a paroxysmal event which is caused due to hyper–synchronization in the neurons that many have various reasons of manifestation. The neuronal discharge maybe focal spreading in specific brain cortex or widespread throughout the cortex. An Electroencephalogram (EEG) is used to in diagnosis and management

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Samico, Ana, and Ângela Venâncio. "A Rare Case of Non-Convulsive Status Epileptic with Psychotic Presentation." Neuropsychiatry 9, no. 1 (2019): 5. https://doi.org/10.5281/zenodo.13609024.

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Background Psychosis associated with epilepsy is one of the temporal and frontal lobe epilepsy (TFLE) forms of presentation. Non-convulsive epileptic status (NCSE) clinical features are subtle and non-specific and, consequently, they are generally not diagnosed and confused with behavioral or psychiatric disorders. It remains a challenge to characterize neurobiological changes that contribute to the genesis or maintenance of both conditions, with a clear need for further investigation. Case report A 56-year-old male patient was hospitalized due to a one month period with persecutory delusions,

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Longo, Luca, and Richard B. Reilly. "onEEGwaveLAD: A fully automated online EEG wavelet-based learning adaptive denoiser for artefacts identification and mitigation." PLOS ONE 20, no. 1 (2025): e0313076. https://doi.org/10.1371/journal.pone.0313076.

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Electroencephalographic signals are obtained by amplifying and recording the brain’s spontaneous biological potential using electrodes positioned on the scalp. While proven to help find changes in brain activity with a high temporal resolution, such signals are contaminated by non-stationary and frequent artefacts. A plethora of noise reduction techniques have been developed, achieving remarkable performance. However, they often require multi-channel information and additional reference signals, are not fully automated, require human intervention and are mostly offline. With the popularity of

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Willems, Laurent M., Felix Rosenow, Susanne Knake, et al. "Repetitive Electroencephalography as Biomarker for the Prediction of Survival in Patients with Post-Hypoxic Encephalopathy." Journal of Clinical Medicine 11, no. 21 (2022): 6253. http://dx.doi.org/10.3390/jcm11216253.

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Predicting survival in patients with post-hypoxic encephalopathy (HE) after cardiopulmonary resuscitation is a challenging aspect of modern neurocritical care. Here, continuous electroencephalography (cEEG) has been established as the gold standard for neurophysiological outcome prediction. Unfortunately, cEEG is not comprehensively available, especially in rural regions and developing countries. The objective of this monocentric study was to investigate the predictive properties of repetitive EEGs (rEEGs) with respect to 12-month survival based on data for 199 adult patients with HE, using lo

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Wan, Wang, Zhongze Gu, Chung-Kang Peng, and Xingran Cui. "Beyond Frequency Bands: Complementary-Ensemble-Empirical-Mode-Decomposition-Enhanced Microstate Sequence Non-Randomness Analysis for Aiding Diagnosis and Cognitive Prediction of Dementia." Brain Sciences 14, no. 5 (2024): 487. http://dx.doi.org/10.3390/brainsci14050487.

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Exploring the spatiotemporal dynamic patterns of multi-channel electroencephalography (EEG) is crucial for interpreting dementia and related cognitive decline. Spatiotemporal patterns of EEG can be described through microstate analysis, which provides a discrete approximation of the continuous electric field patterns generated by the brain cortex. Here, we propose a novel microstate spatiotemporal dynamic indicator, termed the microstate sequence non-randomness index (MSNRI). The essence of the method lies in initially generating a sequence of microstate transition patterns through state space

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Chan, Yu Man, Rebecca Glarin, Bradford A. Moffat, Stefan Bode, and Allison M. McKendrick. "Relating the cortical visual contrast gain response to spectroscopy-measured excitatory and inhibitory metabolites in people who experience migraine." PLOS ONE 17, no. 4 (2022): e0266130. http://dx.doi.org/10.1371/journal.pone.0266130.

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Objective This study aimed to determine whether the visual response to flickering checkerboard patterns measured using electroencephalography (EEG) relate to excitatory or inhibitory metabolite levels measured using ultra-high (7Tesla/7T) magnetic resonance spectroscopy (MRS). Background Electrophysiological studies have shown altered visual cortical response amplitudes and contrast gain responses to high contrast flickering patterns in people with migraine. These contrast response anomalies have been argued to represent an imbalance between cortical inhibition and excitation, however the spec

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Crivelli, Davide, and Michela Balconi. "9 Interoceptive Attentiveness: Evidence for Neurofunctional Correlates from an EEG Source Localization Study." Journal of the International Neuropsychological Society 29, s1 (2023): 801–2. http://dx.doi.org/10.1017/s1355617723009955.

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Objective:Since seminal work by Sherrington, the term interoception refers to the ability to sense modifications of internal bodily states as opposed to the ability to sense stimuli coming from outside the body itself. Despite conceptual changes regarding the afferent signals subserving this type of inner perception, the core of this definition is still valid and widely accepted. The critical contribution of internal state perception to self-regulation as well as higher-order cognitive processes has led to the development of psychometric and observational measures trying to capture individual

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Tomyshev, A., I. Lebedeva, E. Abdullina, and V. Kaleda. "Increased spectral power of theta rhythm is not associated with decreased supragranular thickness in first-episode schizophrenia." European Psychiatry 65, S1 (2022): S333. http://dx.doi.org/10.1192/j.eurpsy.2022.847.

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Introduction Schizophrenia is associated with disturbances in neurophysiological processes. However, the relation of EEG and ERP parameters to structural supragranular cortical abnormalities, observed in schizophrenia, remains unclear. Objectives The purpose was to characterize EEG and ERP disturbances and their relationship to changes occurring in supragranular cortical layers in subjects with schizophrenia. Methods 43 first-episode schizophrenia (FES) male patients and 43 matched healthy controls (HC) underwent background EEG and standard two-tones oddball ERP recording and structural MRI at

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Bensko, Kathleen, Bryan K. Simpson, Thomas A. Terry, and Scott R. Walker. "Best Practices for Planning and Implementing Site Investigations at Federally Owned or Regulated Dams and Levees." Environmental & Engineering Geoscience 29, no. 1 (2023): 17–39. http://dx.doi.org/10.2113/eeg-d-22-00019.

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Abstract Management, regulation, and review of the planning and execution of intrusive site investigations vary within each of four federal organizations involved with dam and levee safety based upon various roles and responsibilities. The U.S. Bureau of Reclamation (USBR), the Tennessee Valley Authority, and the U.S. Army Corps of Engineers (USACE) are owner-operators of dams that serve multiple purposes, including flood control, hydropower, water supply, and navigation. The Federal Energy Regulatory Commission (FERC) regulates and inspects non-federal hydropower dams, and develops and implem

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Hari, Riitta, and Lauri Parkkonen. "The brain timewise: how timing shapes and supports brain function." Philosophical Transactions of the Royal Society B: Biological Sciences 370, no. 1668 (2015): 20140170. http://dx.doi.org/10.1098/rstb.2014.0170.

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We discuss the importance of timing in brain function: how temporal dynamics of the world has left its traces in the brain during evolution and how we can monitor the dynamics of the human brain with non-invasive measurements. Accurate timing is important for the interplay of neurons, neuronal circuitries, brain areas and human individuals. In the human brain, multiple temporal integration windows are hierarchically organized, with temporal scales ranging from microseconds to tens and hundreds of milliseconds for perceptual, motor and cognitive functions, and up to minutes, hours and even mont

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MILOSHEVIKJ, Neda, and Mile VUKOVIKJ. "GRAMMAR AND SYNTACTIC DEFICIT IN CHILDREN WITH SPECIFIC DEVELOPMENTAL LANGUAGE IMPAIRMENT." August 17, 2015. https://doi.org/10.2478/v10215-011-0011-9.

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Bach-Morrow, Lana, Francesco Boccalatte, Antonio DeRosa, et al. "Functional changes in prefrontal cortex following frequency-specific training." Scientific Reports 12, no. 1 (2022). http://dx.doi.org/10.1038/s41598-022-24088-7.

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AbstractNumerous studies indicate a significant role of pre-frontal circuits (PFC) connectivity involving attentional and reward neural networks within attention deficit hyperactivity disorder (ADHD) pathophysiology. To date, the neural mechanisms underlying the utility of non-invasive frequency-specific training systems in ADHD remediation remain underexplored. To address this issue, we created a portable electroencephalography (EEG)-based wireless system consisting of a novel headset, electrodes, and neuro program, named frequency specific cognitive training (FSCT). In a double-blind, random

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Brehme, Hannes, Michael Kölch, Johannes Buchmann, and Christoph Berger. "Neuronal network analysis during short time transcranial direct current stimulation with permanent EEG measurement in early childhood: a feasibility study." Journal of Neural Transmission, May 27, 2025. https://doi.org/10.1007/s00702-025-02946-8.

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Abstract Transcranial direct current stimulation (tDCS) as a non-invasive stimulation is still in the experimental stage for many psychiatric disorders even in adults. The use of tDCS provides an opportunity to influence neural networks and their functional connectivity. How tDCS affects cortical networks and how it influences the functional connectivity of the developing brain is largely unknown. The electroencephalography (EEG) derivation, which has a precise temporal resolution, is well established in the clinical routine in childhood and, in combination with tDCS, it will give us more info

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Cui, Ruifang, Jinliang Jiang, Lu Zeng, et al. "Action Video Gaming Experience Related to Altered Resting-State EEG Temporal and Spatial Complexity." Frontiers in Human Neuroscience 15 (June 29, 2021). http://dx.doi.org/10.3389/fnhum.2021.640329.

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Action video gaming (AVG) places sustained cognitive load on various behavioral systems, thus offering new insights into learning-related neural plasticity. This study aims to determine whether AVG experience is associated with resting-state electroencephalogram (rs-EEG) temporal and spatial complexity, and if so, whether this effect is observable across AVG subgenres. Two AVG games – League of Legends (LOL) and Player Unknown’s Battle Grounds (PUBG) that represent two major AVG subgenres – were examined. We compared rs-EEG microstate and omega complexity between LOL experts and non-experts (E

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Metzger, Marjorie, Stefan Dukic, Roisin McMackin, et al. "Distinct Longitudinal Changes in EEG Measures Reflecting Functional Network Disruption in ALS Cognitive Phenotypes." Brain Topography 38, no. 1 (2024). http://dx.doi.org/10.1007/s10548-024-01078-8.

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AbstractAmyotrophic lateral sclerosis (ALS) is characterised primarily by motor system degeneration, with clinical evidence of cognitive and behavioural change in up to 50% of cases. We have shown previously that resting-state EEG captures dysfunction in motor and cognitive networks in ALS. However, the longitudinal development of these dysfunctional patterns, especially in networks linked with cognitive-behavioural functions, remains unclear. Longitudinal studies on non-motor changes in ALS are essential to further develop our understanding of disease progression, improve care and enhance the

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"The main clinical manifestations of nervous-mental complications in toxoplasmic infection and their non-specific prevention." Journal of V. N. Karazin Kharkiv National University, Series "Medicine", no. 40 (2020). http://dx.doi.org/10.26565/2313-6693-2020-40-02.

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The article is dedicated to topical problems of prevention of neuropsychiatric complications of socially significant parasitosis – toxoplasmosis in Ukraine. The clinical features of the course of chronic toxoplasmosis, changes in the bioelectrical activity of the brain in patients with toxoplasmosis in the acute stage are described. In order to objectify the assessment of the nature of damage to the nervous system of patients, an electroencephalographic (EEG) study was performed with visual assessment and computer processing of the results. Changes in the infrastructure of correlations between

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