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Journal articles on the topic 'HEMISPHERIC ASYMMETRY ANALYSES'

Author: Grafiati

Published: 11 September 2023

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1

van Orden, Karl F., and John F. House. "Spatial Frequency-Dependent Asymmetry of Visual Evoked Potential Amplitudes." Perceptual and Motor Skills 82, no. 3 (1996): 1011–18. http://dx.doi.org/10.2466/pms.1996.82.3.1011.

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The extent to which pattern reversal evoked potential amplitudes are distributed symmetrically over the scalp was investigated as a function of stimulus spatial frequency. Nine right-handed male subjects viewed sinusoidal grating stimuli of 4.0 and 0.5 c/deg phase reversed every 900 msec. A visual half-field configuration enabled selective stimulation of the right- or left-hemisphere visual cortex. Evoked responses were recorded from the 2 cm above the inion (Oz) and at 7 and 13 cm lateral to Oz. Analyses of normalized evoked response amplitudes showed a significant asymmetry for the 4.0 c/deg

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Cao, Rui, Huiyu Shi, Xin Wang, et al. "Hemispheric Asymmetry of Functional Brain Networks under Different Emotions Using EEG Data." Entropy 22, no. 9 (2020): 939. http://dx.doi.org/10.3390/e22090939.

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Despite many studies reporting hemispheric asymmetry in the representation and processing of emotions, the essence of the asymmetry remains controversial. Brain network analysis based on electroencephalography (EEG) is a useful biological method to study brain function. Here, EEG data were recorded while participants watched different emotional videos. According to the videos’ emotional categories, the data were divided into four categories: high arousal high valence (HAHV), low arousal high valence (LAHV), low arousal low valence (LALV) and high arousal low valence (HALV). The phase lag index

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Bhowmik, Prantika. "Polar flux imbalance at the sunspot cycle minimum governs hemispheric asymmetry in the following cycle." Astronomy & Astrophysics 632 (December 2019): A117. http://dx.doi.org/10.1051/0004-6361/201834425.

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Aims. Hemispheric irregularities of solar magnetic activity is a well-observed phenomenon, the origin of which has been studied through numerical simulations and data analysis techniques. In this work we explore possible causes generating north-south asymmetry in the reversal timing and amplitude of the polar field during cycle minimum. Additionally, we investigate how hemispheric asymmetry is translated from cycle to cycle. Methods. We pursued a three-step approach. Firstly, we explored the asymmetry present in the observed polar flux and sunspot area by analysing observational data of the la

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Vyazovskiy, V. V., and I. Tobler. "Handedness Leads to Interhemispheric EEG Asymmetry During Sleep in the Rat." Journal of Neurophysiology 99, no. 2 (2008): 969–75. http://dx.doi.org/10.1152/jn.01154.2007.

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Sleep electroencephalographic (EEG) slow-wave activity is increased after wakefulness and decreases during sleep. Regional sleep EEG differences are thought to be a consequence of activation of specific cortical neuronal circuits during waking. We investigated the relationship between handedness and interhemispheric brain asymmetry. Bilateral EEG recordings were obtained from the frontal and occipital cortex in rats with a clear paw preference in a food-reaching task (right, n = 5; left, n = 5). While still naïve to the task, no waking or sleep EEG asymmetry was present. During the food-reachi

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Nepomnyashchikh, Alexander, Sudip Mandal, Dipankar Banerjee, and Leonid Kitchatinov. "Can the long-term hemispheric asymmetry of solar activity result from fluctuations in dynamo parameters?" Astronomy & Astrophysics 625 (May 2019): A37. http://dx.doi.org/10.1051/0004-6361/201935224.

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Context. The hemispheric asymmetry of sunspot activity observed possesses a regular component varying on a timescale of several solar cycles whose origin and properties are currently debated. Aims This paper addresses the question of whether the long-term hemispheric asymmetry can result from random variations of solar dynamo parameters in time and latitude. Methods. Scatter in the observed tilt angles of sunspot groups was estimated to infer constraints on fluctuations in the dynamo mechanism for poloidal field regeneration. A dynamo model with fluctuations in the Babcock-Leighton type α-effe

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Proverbio, Alice Mado, and Alberto Zani. "Hemispheric Asymmetry in Visual Processing: An ERP Study on Spatial Frequency Gratings." Symmetry 13, no. 2 (2021): 180. http://dx.doi.org/10.3390/sym13020180.

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A hemispheric asymmetry for the processing of global versus local visual information is known. In this study, we investigated the existence of a hemispheric asymmetry for the visual processing of low versus high spatial frequency gratings. The event-related potentials were recorded in a group of healthy right-handed volunteers from 30 scalp sites. Six types of stimuli (1.5, 3 and 6 c/deg gratings) were randomly flashed 180 times in the left and right upper hemifields. The stimulus duration was 80 ms, and the interstimulus interval (ISI) ranged between 850 and 1000 ms. Participants paid attenti

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Amodio, R., A. Prinster, A. M. Monteleone, et al. "Interhemispheric functional connectivity in anorexia and bulimia nervosa." European Psychiatry 41, S1 (2017): S551. http://dx.doi.org/10.1016/j.eurpsy.2017.01.781.

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IntroductionThe functional interplay between brain hemispheres is fundamental for behavioral, cognitive and emotional control. Several pathophysiological aspects of eating disorders (EDs) have been investigated by the use of functional Magnetic Resonance Imaging (fMRI).ObjectivesThe objective of the study was to investigate functional brain asymmetry of resting-state fMRI correlations in symptomatic patients with anorexia nervosa (AN) and bulimia nervosa (BN).AimsWe aimed at revealing whether brain regions implicated in reward, cognitive control, starvation and emotion regulation show altered

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Ambrosini, Ettore, and Antonino Vallesi. "Domain-general Stroop Performance and Hemispheric Asymmetries: A Resting-state EEG Study." Journal of Cognitive Neuroscience 29, no. 5 (2017): 769–79. http://dx.doi.org/10.1162/jocn_a_01076.

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The ability to suppress irrelevant information while executing a task, also known as interference resistance ability, is a function of pFC that is critical for successful goal-directed human behavior. In the study of interference resistance and, more generally, executive functions, two key questions are still open: Does pFC contribute to cognitive control abilities through lateralized but domain-general mechanisms or through hemispheric specialization of domain-specific processes? And what are the underlying causes of interindividual differences in executive control performance? To shed light

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Christou, Antonios I., Satoshi Endo, Yvonne Wallis, Hayley Bair, Maurice P. Zeegers, and Joseph P. McCleery. "Variation in serotonin transporter linked polymorphic region (5-HTTLPR) short/long genotype modulates resting frontal electroencephalography asymmetries in children." Development and Psychopathology 28, no. 1 (2015): 239–50. http://dx.doi.org/10.1017/s0954579415000413.

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AbstractPrevious studies have documented the serotonin transporter linked polymorphic region (5-HTTLPR) as a genetic susceptibility variant that contributes to variability in outcomes related to affective psychopathology, with the short allele associated with negative affectivity and the long allele associated with positive affectivity. In a separate but related line of research, extensive evidence suggests that frontal electroencephalography (EEG) hemispheric asymmetry in the alpha band is also associated with risk for affective psychopathologies, with leftward asymmetry associated with appro

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Shu, Ni, Yaou Liu, Yunyun Duan, and Kuncheng Li. "Hemispheric Asymmetry of Human Brain Anatomical Network Revealed by Diffusion Tensor Tractography." BioMed Research International 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/908917.

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The topological architecture of the cerebral anatomical network reflects the structural organization of the human brain. Recently, topological measures based on graph theory have provided new approaches for quantifying large-scale anatomical networks. However, few studies have investigated the hemispheric asymmetries of the human brain from the perspective of the network model, and little is known about the asymmetries of the connection patterns of brain regions, which may reflect the functional integration and interaction between different regions. Here, we utilized diffusion tensor imaging t

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Byczynski, Gabriel, Kylie Schibli, Gary Goldfield, Gerry Leisman, and Amedeo D’Angiulli. "EEG Power Band Asymmetries in Children with and without Classical Ensemble Music Training." Symmetry 14, no. 3 (2022): 538. http://dx.doi.org/10.3390/sym14030538.

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Much evidence shows that music training influences the development of functional brain organization and cerebral asymmetry in an auditory-motor integrative neural system also associated with language and speech. Such overlap suggests that music training could be used for interventions in disadvantaged populations. Accordingly, we investigated neurofunctional changes associated with the influence of socially based classical ensemble music (CEM) training on executive auditory functions of children from low socioeconomic status (LSES), as compared to untrained counterparts. We conducted a novel R

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Wang, Kai, Xiujun Wang, Raghu Murtugudde, Dongxiao Zhang, and Rong-Hua Zhang. "Sensitivity of asymmetric oxygen minimum zones to mixing intensity and stoichiometry in the tropical Pacific using a basin-scale model (OGCM-DMEC V1.4)." Geoscientific Model Development 15, no. 3 (2022): 1017–35. http://dx.doi.org/10.5194/gmd-15-1017-2022.

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Abstract. The tropical Pacific Ocean holds the two largest oxygen minimum zones (OMZs) in the world's oceans, showing a prominent hemispheric asymmetry, with a much stronger and broader OMZ north of the Equator. However, many models have difficulties in reproducing the observed asymmetric OMZs in the tropical Pacific. Here, we apply a fully coupled basin-scale model to evaluate the impacts of stoichiometry and the intensity of vertical mixing on the dynamics of OMZs in the tropical Pacific. We first utilize observational data of dissolved oxygen (DO) to calibrate and validate the basin-scale m

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Keller, Simon S., Neil Roberts, Marta García-Fiñana, et al. "Can the Language-dominant Hemisphere Be Predicted by Brain Anatomy?" Journal of Cognitive Neuroscience 23, no. 8 (2011): 2013–29. http://dx.doi.org/10.1162/jocn.2010.21563.

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It has long been suspected that cortical interhemispheric asymmetries may underlie hemispheric language dominance (HLD). To test this hypothesis, we determined interhemispheric asymmetries using stereology and MRI of three cortical regions hypothesized to be related to HLD (Broca's area, planum temporale, and insula) in healthy adults in whom HLD was determined using functional transcranial Doppler sonography and functional MRI (15 left HLD, 10 right HLD). We observed no relationship between volume asymmetry of the gyral correlates of Broca's area or planum temporale and HLD. However, we obser

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Shipkova, Karine M. "Lateralization of Auditory Speech Asymmetry in Aphasic Disorders and the Influence of Its Vector on the Efficiency of Dichotic Listening to a Series of C-V-C Words and the Dynamics of Speech Recovery." Sibirskiy Psikhologicheskiy Zhurnal, no. 85 (2022): 162–73. http://dx.doi.org/10.17223/17267080/85/8.

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The dichotic listening task is commonly used in a wide range of neuropsychological issues for studying interhemispheric asymmetry and interhemispheric interaction mechanisms. The article aims to determine the specific vector of auditory speech asymmetry for efferent motor and acoustic mnestic aphasia and its correlation with the dynamics of speech recovery. The paper studied the frequency of the right and left vectors of auditory speech asymmetry in aphasics with different time post-onset and structural characteristics of lesions. Also, the paper analyses the influence of the ear advantage sid

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Baybakov, S. E., N. S. Bakhareva, S. V. Chigrin, et al. "Hemispheric Asymmetry Gender Differences in Preadolescent Children." Innovative Medicine of Kuban, no. 1 (March 6, 2023): 53–57. http://dx.doi.org/10.35401/2541-9897-2023-26-1-53-57.

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Background: Investigating various postnatal parameters of cerebral hemispheres is of great practical value.Objective: To study gender differences in hemispheric parameters and interhemispheric interactions in preadolescent children.Materials and methods: The retrospective study assessed archived brain magnetic resonance images of 60 eight-year-old boys and 60 eight-year-old girls. The analyzed parameters were as follows: 1) hemispheric length; 2) hemispheric width; 3) hemispheric height; 4) width-longitudinal index of a hemisphere; 5) altitude-longitudinal index of a hemisphere; 6) length of f

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Дубасова, Анжелика. "Лексическая неоднозначность в экспериментальных исследованиях: метаанализ". Vārds un tā pētīšanas aspekti: rakstu krājums = The Word: Aspects of Research: conference proceedings, № 24 (2 грудня 2020): 43–51. http://dx.doi.org/10.37384/vtpa.2020.24.043.

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The article analyses experimental studies of lexical ambiguity (polysemy and homonymy). In total, 42 papers published between 1981 and 2017 were selected for analysis. Selected works were analyzed from the point of view of a) interaction of the main factors of lexical ambiguity resolution (meaning dominance and context), b) modularity/interactivity of language systems. The choice of these issues was caused by the fact that, despite a significant number of papers addressing them, a common theoretical model of lexical ambiguity resolution is still missing. The analysis concluded that none of the

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Angel, Lucie, Séverine Fay, Badiâa Bouazzaoui, and Michel Isingrini. "Two Hemispheres for Better Memory in Old Age: Role of Executive Functioning." Journal of Cognitive Neuroscience 23, no. 12 (2011): 3767–77. http://dx.doi.org/10.1162/jocn_a_00104.

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This experiment explored the functional significance of age-related hemispheric asymmetry reduction associated with episodic memory and the cognitive mechanisms that mediate this brain pattern. ERPs were recorded while young and older adults performed a word-stem cued-recall task. Results confirmed that the parietal old/new effect was of larger latency and reduced magnitude and less lateralized in the older group than the young group. Correlational and regression analyses indicated that the degree of laterality of brain activity determines the accuracy of memory performance and mediates age-re

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Shibahara, Naoki, and Brennis Lucero-Wagoner. "Hemispheric Asymmetry in Accessing Word Meanings: Concrete and Abstract Nouns." Perceptual and Motor Skills 94, no. 3_suppl (2002): 1292–300. http://dx.doi.org/10.2466/pms.2002.94.3c.1292.

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The present experiments investigated hemispheric differences in the brain in accessing concrete and abstract word meanings. For this purpose, an automatic semantic priming paradigm was used with a short stimulus onset asynchrony between prime and target (250 msec.) as well as a low proportion of related trials. (20%). Analysis showed that for concrete nouns, priming effects were observed in both hemispheres. There was greater priming in the right hemisphere, suggesting hemispheric differences in accessing semantic representations of concrete nouns. For abstract nouns, on the other hand, primin

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Hamdy, Shaheen, John C. Rothwell, David J. Brooks, Dale Bailey, Qasim Aziz, and David G. Thompson. "Identification of the Cerebral Loci Processing Human Swallowing With H2 15O PET Activation." Journal of Neurophysiology 81, no. 4 (1999): 1917–26. http://dx.doi.org/10.1152/jn.1999.81.4.1917.

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Identification of the cerebral loci processing human swallowing with H2 15O PET activation. Lesional and electrophysiological data implicate a role for the cerebral cortex in the initiation and modulation of human swallowing, and yet its functional neuroanatomy remains undefined. We therefore conducted a functional study of the cerebral loci processing human volitional swallowing with 15O-labeled water positron emission tomography (PET) activation imaging. Regional cerebral activation was investigated in 8 healthy right handed male volunteers with a randomized 12-scan paradigm of rest and wate

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Zhang, X. J., L. H. Deng, Z. P. Qiang, Y. Fei, X. A. Tian, and C. Li. "Hemispheric distribution of coronal mass ejections from 1996 to 2020." Monthly Notices of the Royal Astronomical Society 520, no. 3 (2023): 3923–36. http://dx.doi.org/10.1093/mnras/stad323.

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ABSTRACT Solar magnetic structures are known to be asymmetrically distributed between the two hemispheres. To date, the hemispheric variations of the coronal mass ejections (CMEs) at different latitudes, in different cycles, and for different types (regular and specific events) are still unclear. From the list of white-light CMEs in the Coordinated Data Analysis Web catalogue, we investigate the hemispheric asymmetry of high-latitude and low-latitude CMEs in the time interval from 1996 January to 2020 December. The main results are shown for the following: (1) in each hemisphere, regular CMEs

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Hayakawa, Hisashi, Kentaro Hattori, Mitsuru Sôma, Tomoya Iju, Bruno P. Besser, and Shunsuke Kosaka. "An Overview of Sunspot Observations in 1727–1748." Astrophysical Journal 941, no. 2 (2022): 151. http://dx.doi.org/10.3847/1538-4357/ac6671.

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Abstract Solar activity generally exhibits cyclic behavior in terms of sunspot group number and sunspot positions every ≈11 yr. These sunspot data have therefore played key roles in numerous analyses of solar–terrestrial physics. However, their reconstructions prior to the 1830s have remained controversial and included significant data gaps, especially from the 1720s to the 1740s. Therefore, this study reviewed contemporary sunspot observations for 1727–1748 to add several forgotten records by Van Coesfelt in 1728–1729, Dûclos in 1736, Martin in 1737, and Cassini and Maraldi in 1748. On the ba

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Chen, Aihong, Yue Deng, Xiaobing Zuo, and Suting Zhong. "Alteration in Asymmetry of White Matter Network of Parkinson’s Disease." Contrast Media & Molecular Imaging 2022 (July 4, 2022): 1–8. http://dx.doi.org/10.1155/2022/8493729.

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Parkinson’s disease (PD) is manifest clinically by an asymmetrical presentation of motor dysfunction. A large number of previous neuroimaging research studies have stated the alteration in the hemispheric asymmetry of morphological features in PD disease. Diffusion Magnetic Resonance Imaging (MRI), which is noninvasive, has been widely used to quantify the white matter network in the human brain of both healthy subjects and patients. Besides, graph theory analysis is widely used to quantify the topological architecture of the human brain network. Lately, researchers have discovered that the to

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Calmels, Marie-Noëlle, Yohan Gallois, Mathieu Marx, et al. "Functional Reorganization of the Central Auditory System in Children with Single-Sided Deafness: A Protocol Using fNIRS." Brain Sciences 12, no. 4 (2022): 423. http://dx.doi.org/10.3390/brainsci12040423.

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In children, single-sided deafness (SSD) affects the development of linguistic and social skills and can impede educational progress. These difficulties may relate to cortical changes that occur following SSD, such as reduced inter-hemispheric functional asymmetry and maladaptive brain plasticity. To investigate these neuronal changes and their evolution in children, a non-invasive technique is required that is little affected by motion artifacts. Here, we present a research protocol that uses functional near-infrared spectroscopy (fNIRS) to evaluate the reorganization of cortical auditory asy

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Bender, Frida A. M., Anders Engström, Robert Wood, and Robert J. Charlson. "Evaluation of Hemispheric Asymmetries in Marine Cloud Radiative Properties." Journal of Climate 30, no. 11 (2017): 4131–47. http://dx.doi.org/10.1175/jcli-d-16-0263.1.

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Abstract The hemispheric symmetry of albedo and its contributing factors in satellite observations and global climate models is evaluated. The analysis is performed on the annual mean time scale, on which a bimodality in the joint distribution of albedo and cloud fraction is evident, resulting from tropical and subtropical clouds and midlatitude clouds, respectively. Hemispheric albedo symmetry is not found in individual ocean-only latitude bands; comparing the Northern and Southern Hemisphere (NH and SH), regional mean albedo is higher in the NH tropics and lower in the NH subtropics and midl

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Kim, Jeongchul, Youngkyoo Jung, Richard Barcus, et al. "Rhesus Macaque Brain Developmental Trajectory: A Longitudinal Analysis Using Tensor-Based Structural Morphometry and Diffusion Tensor Imaging." Cerebral Cortex 30, no. 8 (2020): 4325–35. http://dx.doi.org/10.1093/cercor/bhaa015.

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Abstract The typical developmental trajectory of brain structure among nonhuman primates (NHPs) remains poorly understood. In this study, we characterized the normative trajectory of developmental change among a cohort of rhesus monkeys (n = 28), ranging in age from 2 to 22 months, using structural MRI datasets that were longitudinally acquired every 3–4 months. We hypothesized that NHP-specific transient intracranial volume decreases reported during late infancy would be part of the typical developmental process, which is driven by volumetric contraction of gray matter in primary functional a

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Wang, Bin, Qionghui Zhan, Ting Yan, et al. "Hemisphere and Gender Differences in the Rich-Club Organization of Structural Networks." Cerebral Cortex 29, no. 11 (2019): 4889–901. http://dx.doi.org/10.1093/cercor/bhz027.

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AbstractStructural and functional differences in brain hemispheric asymmetry have been well documented between female and male adults. However, potential differences in the connectivity patterns of the rich-club organization of hemispheric structural networks in females and males remain to be determined. In this study, diffusion tensor imaging was used to construct hemispheric structural networks in healthy subjects, and graph theoretical analysis approaches were applied to quantify hemisphere and gender differences in rich-club organization. The results showed that rich-club organization was

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Coelho, Chase J., Andrzej Przybyla, Vivek Yadav, and Robert L. Sainburg. "Hemispheric differences in the control of limb dynamics: a link between arm performance asymmetries and arm selection patterns." Journal of Neurophysiology 109, no. 3 (2013): 825–38. http://dx.doi.org/10.1152/jn.00885.2012.

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Human handedness has been described and measured from two perspectives: handedness inventories rate hand preferences, whereas other tests examine motor performance asymmetries. These two measurement approaches reflect a major controversy in a literature that defines handedness as either a preference or an asymmetry in sensorimotor processing. Over the past decade, our laboratory has developed a model of handedness based on lateralization of neural processes. This model attributes distinct control processes to each hemisphere, which in turn lead to observable interlimb sensorimotor performance

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Garny, H., G. E. Bodeker, D. Smale, M. Dameris, and V. Grewe. "Drivers of hemispheric differences in return dates of mid-latitude stratospheric ozone to historical levels." Atmospheric Chemistry and Physics 13, no. 15 (2013): 7279–300. http://dx.doi.org/10.5194/acp-13-7279-2013.

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Abstract. Chemistry-climate models (CCMs) project an earlier return of northern mid-latitude total column ozone to 1980 values compared to the southern mid-latitudes. The chemical and dynamical drivers of this hemispheric difference are investigated in this study. The hemispheric asymmetry in return dates is a robust result across different CCMs and is qualitatively independent of the method used to estimate return dates. However, the differences in dates of return to 1980 levels between the southern and northern mid-latitudes can vary between 0 and 30 yr across the range of CCM projections an

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Garny, H., G. E. Bodeker, D. Smale, M. Dameris, and V. Grewe. "Drivers of hemispheric differences in return dates of mid-latitude stratospheric ozone to historical levels." Atmospheric Chemistry and Physics Discussions 12, no. 12 (2012): 32825–81. http://dx.doi.org/10.5194/acpd-12-32825-2012.

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Abstract. Chemistry-climate models (CCMs) project an earlier return of northern mid-latitude total column ozone to 1980 values compared to the southern mid-latitudes. The chemical and dynamical drivers of this hemispheric difference are investigated in this study. The hemispheric asymmetry in return dates is a robust result across different CCMs and is qualitatively independent of the method used to estimate return dates. However, the differences in dates of return to 1980 levels between the southern and northern mid-latitudes can vary between 0 and 30 yr across the range of CCM projections an

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Knolle, Lawrence, Harold W. Gordon, and Danjuma Gwany. "Relationship between Performance and Preference Measures of Cognitive Laterality." Psychological Reports 61, no. 1 (1987): 215–23. http://dx.doi.org/10.2466/pr0.1987.61.1.215.

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This study examined the relationship between two methods of assessing cognitive laterality, one by responses on a preference inventory and the other by assessing asymmetry of hemispheric performance on tests associated with processing in the left or right cerebral hemispheres. 87 graduate students were administered both instruments. Analysis showed negative or no relations between the preference and performance measures. The performance tests associated with left- and right-hemisphere functions were taken directly or adapted from tests showing left- or right-hemisphere superiority in unilatera

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Lekshmi, B., Dibyendu Nandy, and H. M. Antia. "Hemispheric asymmetry in meridional flow and the sunspot cycle." Monthly Notices of the Royal Astronomical Society 489, no. 1 (2019): 714–22. http://dx.doi.org/10.1093/mnras/stz2168.

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ABSTRACT Magnetohydrodynamic dynamo modelling shows that the large-scale solar meridional plasma flow plays an important role in governing the dynamics of the sunspot cycle. Observations indicate that meridional flow velocities at each solar latitude and depth vary over time and are asymmetric across the equator. Here, using helioseismic observations we explore the temporal variation in the hemispherical asymmetry of near-surface residual (time-varying) component of the Sun’s meridional flow velocity. The meridional flow velocities obtained from Global Oscillation Network Group (GONG) and Heli

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Novikova, Galina Albertovna, and Andrey Gorgonyevich Solovyev. "FUNCTIONAL ASYMMETRY OF BRAIN HEMISPHERES IN ALCOHOL DEPENDENCE." Reviews on Clinical Pharmacology and Drug Therapy 10, no. 3 (2012): 13–17. http://dx.doi.org/10.17816/rcf10313-17.

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With the goal to study peculiarities of functional asymmetry of the brain hemispheres in alcohol dependence, there has been done an analysis of current research data from Russian and foreign studies. It has been shown that alcohol is a neurochemical modulator of interhemispheric relations, it affects functional asymmetry of the brain hemispheres, perception processes, changes emotional background, influences motor asymmetry, the brain cortex functional activity. Alcohol intoxication is described by the right hemisphere lateralization and a laterodeviation of the brain hemispheres’ functional a

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St. Jacques, Peggy, David C. Rubin, Kevin S. LaBar, and Roberto Cabeza. "The Short and Long of It: Neural Correlates of Temporal-order Memory for Autobiographical Events." Journal of Cognitive Neuroscience 20, no. 7 (2008): 1327–41. http://dx.doi.org/10.1162/jocn.2008.20091.

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Previous functional neuroimaging studies of temporal-order memory have investigated memory for laboratory stimuli that are causally unrelated and poor in sensory detail. In contrast, the present functional magnetic resonance imaging (fMRI) study investigated temporal-order memory for autobiographical events that were causally interconnected and rich in sensory detail. Participants took photographs at many campus locations over a period of several hours, and the following day they were scanned while making temporal-order judgments to pairs of photographs from different locations. By manipulatin

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Braun, Claude M. J., Mathieu Dumont, Julie Duval, Isabelle Hamel, and Lucie Godbout. "Opposed Left and Right Brain Hemisphere Contributions to Sexual Drive: A Multiple Lesion Case Analysis." Behavioural Neurology 14, no. 1-2 (2003): 55–61. http://dx.doi.org/10.1155/2003/123757.

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Brain topographical studies of normal men have have shown that sexual excitation is asymmetric in the brain hemispheres. Group studies of patients with unilateral epileptic foci and other studies of patients with unilateral brain lesions have come to the same conclusion. The present study reviewed previously published single case reports of patients with frank hypo or hypersexuality subsequent to a unilateral brain lesion. Hyposexual patients tended to have left hemisphere lesions (primarily of the temporal lobe), and hypersexual patients tended to have right hemisphere lesions (primarily of t

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Сеинова and L. Seinova. "A comparative analysis of cerebral asymmetry according to data from perfusion computed tomography in infarctions of the cerebral hemispheres and dyscirculatory encephalopathy." Journal of New Medical Technologies. eJournal 9, no. 4 (2015): 0. http://dx.doi.org/10.12737/16770.

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Currently a problem of timely diagnostics and treatment of disorders of cerebral circulation is one of the most important for medicine, as strokes and chronic brain ischemia occupy a significant place among the diseases leading to mortality and disability of population. Computed tomography is one of the leading diagnostics of cerebro-vascular disorders. Today, the diagnostic capabilities of perfusion computed tomography, especially in the field of subtle changes in perfusion in infected and in the contralateral hemispheres of the brain are poorly understood and aren’t used in full. The relevan

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Van Essen, David C., Chad J. Donahue, Timothy S. Coalson, Henry Kennedy, Takuya Hayashi, and Matthew F. Glasser. "Cerebral cortical folding, parcellation, and connectivity in humans, nonhuman primates, and mice." Proceedings of the National Academy of Sciences 116, no. 52 (2019): 26173–80. http://dx.doi.org/10.1073/pnas.1902299116.

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Advances in neuroimaging and neuroanatomy have yielded major insights concerning fundamental principles of cortical organization and evolution, thus speaking to how well different species serve as models for human brain function in health and disease. Here, we focus on cortical folding, parcellation, and connectivity in mice, marmosets, macaques, and humans. Cortical folding patterns vary dramatically across species, and individual variability in cortical folding increases with cortical surface area. Such issues are best analyzed using surface-based approaches that respect the topology of the

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PREDA, Vasile Radu. "Cerebral Hemispheric Dominance and Lateralization. Examination methods and procedures." Revista Română de Terapia Tulburărilor de Limbaj şi Comunicare VII, no. 2 (2021): 67–84. http://dx.doi.org/10.26744/rrttlc.2021.7.2.07.

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On the basis of electrophysiological and neuropsychological investigations the existence of cerebral hemispheric dominance has been established. Thus, a certain psycho-behavioural function may not be equally governed by either the left or the right hemisphere, a tendency towards lateralization coming into play (Sperri, 1974; Arseni, Golu, Dănăilă, 1983; Funnell, Carballis, Gazzanga, 2000). The functional asymmetry of the analysers is encountered both at the peripheral level, through the sensory-motor lateralization of paired receptors, and at the cortical level, through the asymmetrical functi

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Krol, Maarten, Marco de Bruine, Lars Killaars, et al. "Age of air as a diagnostic for transport timescales in global models." Geoscientific Model Development 11, no. 8 (2018): 3109–30. http://dx.doi.org/10.5194/gmd-11-3109-2018.

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Abstract. This paper presents the first results of an age-of-air (AoA) inter-comparison of six global transport models. Following a protocol, three global circulation models and three chemistry transport models simulated five tracers with boundary conditions that grow linearly in time. This allows for an evaluation of the AoA and transport times associated with inter-hemispheric transport, vertical mixing in the troposphere, transport to and in the stratosphere, and transport of air masses between land and ocean. Since AoA is not a directly measurable quantity in the atmosphere, simulations of

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Ikkert, Oksana, and Tetiana Korol. "CEREBRAL HEMISPHERES FUNCTIONAL ASYMMETRY IN THE EDUCATION OF NATURAL SPECIALTIES AND HUMANITIES STUDENTS." Scientific Journal of Polonia University 58, no. 3 (2023): 90–97. http://dx.doi.org/10.23856/5813.

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The functional asymmetry of the human brain hemispheres (motor, sensory and mental) reflects the difference in the distribution of neuropsychological functions between its right and left hemispheres. Both hemispheres are involved in the implementation of any types of mental activity or regulation of vegetative physiological processes, but each of them provides different aspects of this activity and some processes domination. Persons with left-hemisphere and right-hemisphere thinking differ in the features of perception, analysis, and reproduction of information, which is important in the proce

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Hayes, Scott M., Elsa Baena, Trong-Kha Truong, and Roberto Cabeza. "Neural Mechanisms of Context Effects on Face Recognition: Automatic Binding and Context Shift Decrements." Journal of Cognitive Neuroscience 22, no. 11 (2010): 2541–54. http://dx.doi.org/10.1162/jocn.2009.21379.

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Although people do not normally try to remember associations between faces and physical contexts, these associations are established automatically, as indicated by the difficulty of recognizing familiar faces in different contexts (“butcher-on-the-bus” phenomenon). The present fMRI study investigated the automatic binding of faces and scenes. In the face–face (F–F) condition, faces were presented alone during both encoding and retrieval, whereas in the face/scene–face (FS–F) condition, they were presented overlaid on scenes during encoding but alone during retrieval (context change). Although

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Eckert, Mark A., Kenneth I. Vaden, and Federico Iuricich. "Cortical asymmetries at different spatial hierarchies relate to phonological processing ability." PLOS Biology 20, no. 4 (2022): e3001591. http://dx.doi.org/10.1371/journal.pbio.3001591.

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The ability to map speech sounds to corresponding letters is critical for establishing proficient reading. People vary in this phonological processing ability, which has been hypothesized to result from variation in hemispheric asymmetries within brain regions that support language. A cerebral lateralization hypothesis predicts that more asymmetric brain structures facilitate the development of foundational reading skills like phonological processing. That is, structural asymmetries are predicted to linearly increase with ability. In contrast, a canalization hypothesis predicts that asymmetrie

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Chiou, E. W., L. W. Thomason, and W. P. Chu. "Variability of Stratospheric Water Vapor Inferred from SAGE II, HALOE, and Boulder (Colorado) Balloon Measurements." Journal of Climate 19, no. 16 (2006): 4121–33. http://dx.doi.org/10.1175/jcli3841.1.

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Abstract The variability of stratospheric water vapor between 1996 and 2004 has been studied using multiyear measurements from the Stratospheric Aerosol and Gas Experiment II (SAGE II) version 6.2 dataset, the Halogen Occultation Experiment (HALOE) version 19 dataset, and the balloon-borne frost point hygrometer data record at Boulder, Colorado (40°N, 105°W). The features derived from SAGE II and HALOE for 20° latitudinal zones from 60°S to 60°N at various altitudes (16–34 km) show good quantitative agreement regarding the phases and magnitudes of annual, semiannual, and quasi-biennial oscilla

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Nicholls, Michael E. R. "Hemispheric Asymmetries for Temporal Resolution: A Signal Detection Analysis of Threshold and Bias." Quarterly Journal of Experimental Psychology Section A 47, no. 2 (1994): 291–310. http://dx.doi.org/10.1080/14640749408401113.

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Divided visual field techniques were used to investigate hemispheric asymmetries for (a) the threshold of fusion of two flashes of light and (b) the detection of simultaneous versus successive events for a group of normal, right-handed adults. A signal detection analysis revealed a higher level of accuracy for the right visual field-left hemisphere (RVF-LH) relative to the left visual field-right hemisphere (LVF-RH) for both tasks. These results were interpreted in terms of a general left-hemisphere advantage for the discrimination of fine temporal events. The implications of these results for

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Kolennikova, Maria, and Daria Gushchina. "Revisiting the Contrasting Response of Polar Stratosphere to the Eastern and Central Pacific El Niños." Atmosphere 13, no. 5 (2022): 682. http://dx.doi.org/10.3390/atmos13050682.

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El Niño Southern Oscillation (ENSO) invokes the release of a large amount of heat and moisture into the tropical atmosphere, inducing circulation anomalies. The circulation response to ENSO propagates both horizontally poleward and vertically into the stratosphere. Here, we investigate the remote response of the polar stratosphere to ENSO using reanalysis data, along with composite and regression analysis. In particular, we focus on inter-event variability resulting from two ENSO types (the Eastern Pacific (EP) and the Central Pacific (CP) El Niño) and the inter-hemispheric difference in the E

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Kolennikova, Maria, and Daria Gushchina. "Revisiting the Contrasting Response of Polar Stratosphere to the Eastern and Central Pacific El Niños." Atmosphere 13, no. 5 (2022): 682. http://dx.doi.org/10.3390/atmos13050682.

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El Niño Southern Oscillation (ENSO) invokes the release of a large amount of heat and moisture into the tropical atmosphere, inducing circulation anomalies. The circulation response to ENSO propagates both horizontally poleward and vertically into the stratosphere. Here, we investigate the remote response of the polar stratosphere to ENSO using reanalysis data, along with composite and regression analysis. In particular, we focus on inter-event variability resulting from two ENSO types (the Eastern Pacific (EP) and the Central Pacific (CP) El Niño) and the inter-hemispheric difference in the E

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Pinel, Philippe, and Stanislas Dehaene. "Beyond Hemispheric Dominance: Brain Regions Underlying the Joint Lateralization of Language and Arithmetic to the Left Hemisphere." Journal of Cognitive Neuroscience 22, no. 1 (2010): 48–66. http://dx.doi.org/10.1162/jocn.2009.21184.

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Language and arithmetic are both lateralized to the left hemisphere in the majority of right-handed adults. Yet, does this similar lateralization reflect a single overall constraint of brain organization, such an overall “dominance” of the left hemisphere for all linguistic and symbolic operations? Is it related to the lateralization of specific cerebral subregions? Or is it merely coincidental? To shed light on this issue, we performed a “colateralization analysis” over 209 healthy subjects: We investigated whether normal variations in the degree of left hemispheric asymmetry in areas involve

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Zhu, Yue, Shuai Wang, Xiaohong Gong, et al. "Associations between hemispheric asymmetry and schizophrenia-related risk genes in people with schizophrenia and people at a genetic high risk of schizophrenia." British Journal of Psychiatry 219, no. 1 (2021): 392–400. http://dx.doi.org/10.1192/bjp.2021.47.

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BackgroundSchizophrenia is considered a polygenic disorder. People with schizophrenia and those with genetic high risk of schizophrenia (GHR) have presented with similar neurodevelopmental deficits in hemispheric asymmetry. The potential associations between neurodevelopmental abnormalities and schizophrenia-related risk genes in both schizophrenia and those with GHR remains unclear.AimsTo investigate the shared and specific alternations to the structural network in people with schizophrenia and those with GHR. And to identify an association between vulnerable structural network alternation an

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Kong, Xiang-Zhen, Samuel R. Mathias, Tulio Guadalupe, et al. "Mapping cortical brain asymmetry in 17,141 healthy individuals worldwide via the ENIGMA Consortium." Proceedings of the National Academy of Sciences 115, no. 22 (2018): E5154—E5163. http://dx.doi.org/10.1073/pnas.1718418115.

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Hemispheric asymmetry is a cardinal feature of human brain organization. Altered brain asymmetry has also been linked to some cognitive and neuropsychiatric disorders. Here, the ENIGMA (Enhancing NeuroImaging Genetics through Meta-Analysis) Consortium presents the largest-ever analysis of cerebral cortical asymmetry and its variability across individuals. Cortical thickness and surface area were assessed in MRI scans of 17,141 healthy individuals from 99 datasets worldwide. Results revealed widespread asymmetries at both hemispheric and regional levels, with a generally thicker cortex but smal

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Kanat, Ayhan, Ugur Yazar, Bulent Ozdemir, Zerrin O. Coskun, and Ozlem Erdivanli. "Frontal sinus asymmetry: Is it an effect of cranial asymmetry? X-ray analysis of 469 normal adult human frontal sinus." Journal of Neurosciences in Rural Practice 06, no. 04 (2015): 511–14. http://dx.doi.org/10.4103/0976-3147.168436.

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ABSTRACT Background and Aims: There is no study in the literature that investigates an asymmetric morphological feature of the frontal sinus (FS). Materials and Methods: Four hundred and sixty-nine consecutive direct X-rays of FSs were analyzed for the asymmetry between the right and left sides. When an asymmetry in the height and contour of the FS existed, this difference was quantified. Results: Of the 469 patients, X-rays of 402 patients (85.7%), there was an asymmetry between right and left sides of the FS. Of these 235 (50.1%) were dominant on the left side, whereas 167 (35.6%) were domin

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Xiang Qian, Xu, G. V. Korobeynikov, D. M. Mishchuk, and L. G. Korobeynikova. "Features of individual cognitive style of qualified badminton players." Health, sport, rehabilitation 6, no. 4 (2020): 39–46. http://dx.doi.org/10.34142/hsr.2020.06.04.04.

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Aim: to determine of peculiarities of personal cognitive styles in qualified badminton players. Material and methods. The studies were carried out using the hardware-software computer complex "Multipsychometer-05". The modified Stroop test was selected. The indicators of the test "Field dependence" were determined: field independence, left hemispheric dominance, functional asymmetry, and the effectiveness of the test. The obtained results of the study were analyzed for the entire sample of badminton players, as well as separately for men and women. Results. According to the results

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