The lateralized brain: right and left hemisphere

2018 ◽  
pp. 235-260
Author(s):  
Susan Hart
Keyword(s):  
Left Hemisphere

Investigation of the Effect of Mode and Tempo on Emotional Responses to Music Using EEG Power Asymmetry

2013 ◽  
Vol 27 (3) ◽  
pp. 142-148 ◽  
Author(s):  
Konstantinos Trochidis ◽  
Emmanuel Bigand
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Emotional Responses ◽  
Interactive Effects ◽  
Eeg Activity ◽  
Musical Excerpt ◽  
Major Mode ◽  
Musical Modes ◽  
Slow Tempo ◽  
The Right

The combined interactions of mode and tempo on emotional responses to music were investigated using both self-reports and electroencephalogram (EEG) activity. A musical excerpt was performed in three different modes and tempi. Participants rated the emotional content of the resulting nine stimuli and their EEG activity was recorded. Musical modes influence the valence of emotion with major mode being evaluated happier and more serene, than minor and locrian modes. In EEG frontal activity, major mode was associated with an increased alpha activation in the left hemisphere compared to minor and locrian modes, which, in turn, induced increased activation in the right hemisphere. The tempo modulates the arousal value of emotion with faster tempi associated with stronger feeling of happiness and anger and this effect is associated in EEG with an increase of frontal activation in the left hemisphere. By contrast, slow tempo induced decreased frontal activation in the left hemisphere. Some interactive effects were found between mode and tempo: An increase of tempo modulated the emotion differently depending on the mode of the piece.

Left-hemisphere parieto-frontal interactions during phonologic and semantic word decisions. A conditioning-and-perturb TMS study

2012 ◽  
Vol 43 (01) ◽  
Author(s):  
G Hartwigsen ◽  
P Schuschan ◽  
HR Siebner ◽  
J Claßen ◽  
D Saur
Keyword(s):  
Left Hemisphere

Clinical-neurosonographic parallels of intracranial hemorrhagies in early childhood

2019 ◽  
Vol 22 (6) ◽  
pp. 116-122
Author(s):  
Sh. Sh. Shamansurov ◽  
Sh. H. Saidazizova ◽  
S. O. Nazarova
Keyword(s):  
Early Childhood ◽  
Comparative Analysis ◽  
Subarachnoid Hemorrhage ◽  
Left Hemisphere ◽  
Intracranial Hemorrhage ◽  
Intraventricular Hemorrhage ◽  
Detailed Examination ◽  
Intracranial Hemorrhages ◽  
Risk Of Hemorrhage ◽  
Neurological State

Objective. Conduct a comparative analysis of clinical and neurosonographic indicators of intracranial hemorrhage in infants.Materials and methods. In the clinical part of the study, 68 patients took part in the acute / acute periods of intracranial hemorrhage, which we took for the study on the basis of the Tashkent City Children's Clinical Hospital No1. Gender ratios of which were 69.1% boys (47 children) and 30.9% girls (21 children), from birth to 2 months of life (average age at the time of hemorrhage is 36.28 ± 9.85 days). Diagnostic examination included neurosonography (NSG) of all children in the first 24 hours of the implementation of intracranial hemorrhages on admission to the clinic.Results. According to our study of 68 children with intracranial hemorrhage, it turned out that the average age of morbidity was 36.28 ± 9.85 days (p < 0.001) Neurosonographic indicators stated the presence of parenchymal hemorrhage (right and left hemisphere), SAH (subarachnoid hemorrhage), hemorrhage into the trunk, IVH (intraventricular hemorrhage) II, IVH III. According to neurosonography, parenchymal hemorrhage (right-16 or left hemisphere-21) was observed in 37 patients, SAH and IVH-II 21 (30.9%) patients, IVH III – in 17 (25%) patients, hemorrhage in 3 (4.4%) brain stem of patientsConclusion. Analysis of the implementation of hemorrhage showed that not always small gestational age is the risk of hemorrhage. Cases of less severe changes (27%) on NSG with a coarser clinical picture and vice versa (15%), necessitate (taking into account the severity of the neurological state), a more detailed examination, including visualization (CT, MRI).

ПСИХОДИДАКТИЧЕСКИЕ АСПЕКТЫ ОСВОЕНИЯ СТУДЕНТАМИ-ГУМАНИТАРИЯМИ СОДЕРЖАНИЯ ЕСТЕСТВЕННОНАУЧНЫХ ДИСЦИПЛИН// Academy Journal No.5(17), 2019/ Chief Editor Susan Belih /OEAPS Inc.(Open European Academy of Public Sciences). Tallinn, Estonia. 09.05.2019: OEAPS Inc., 2019. - pp. 37-44.

2019 ◽  
Author(s):  
Раиса Николаевна Афонина ◽  
Татьяна Степановна Малолеткина
Keyword(s):  
Left Hemisphere ◽  
Natural Science ◽  
Chief Editor ◽  
Natural Sciences ◽  
Evidence Based ◽  
European Academy ◽  
Emotional Perception ◽  
The World ◽  
Humanities Students ◽  
Figurative Thinking

В статье рассматриваются психодидактические аспекты освоения студентами-гуманитариями содержания естественнонаучных дисциплин. Специфика обучения естественнонаучным дисциплинам студентов-гуманитариев определяется наличием у данной группы обучающихся особенностей восприятия и переработки информации. Для гуманитариев в большей мере характерно превалирование ассоциативного, образного мышления, эмоционального восприятия информации, отторжение формализованных, доказательных способов рассуждений, доминирование реального восприятия окружающего мира над абстрактным, идеализированным. Современные педагогические методики в основном ориентированы на левополушарное восприятие, именно поэтому правополушарные учащиеся оказываются в невыгодном положении. The article deals with psychodidactic aspects of mastering the content of natural sciences by humanities students. The specificity of teaching the natural science disciplines of humanities students is determined by the presence of features of perception and processing of information in this group of students. For the humanities, the prevalence of associative, figurative thinking, emotional perception of information, the rejection of formalized, evidence-based ways of reasoning, the dominance of the real perception of the world over the abstract, idealized, are more characteristic. Modern pedagogical methods are mainly focused on left hemisphere perception, which is why right hemispheric students find themselves at a disadvantage.

Changes in the Total Power of Beta and Theta Bands When Using EEG Biofeedback in Primary School-Age Children Having Difficulties with Voluntary Regulation

2020 ◽  
pp. 331-340
Author(s):  
Yuliya S. Dzhos ◽  
◽  
Irina A. Men’shikova ◽  
Keyword(s):  
Left Hemisphere ◽  
Spectral Characteristics ◽  
Low Frequency ◽  
School Age Children ◽  
Total Power ◽  
Eeg Biofeedback ◽  
Beta Band ◽  
Bioelectric Activity ◽  
Voluntary Regulation ◽  
The Brain

This article presents the results of the study on spectral electroencephalogram (EEG) characteristics in 7–10-year-old children (8 girls and 22 boys) having difficulties with voluntary regulation of activity after 10 and 20 neurofeedback sessions using beta-activating training. Brain bioelectric activity was recorded in 16 standard leads using the Neuron-Spectrum-4/VPM complex. The dynamics was assessed by EEG beta and theta bands during neurofeedback. An increase in the total power of beta band oscillations was established both after 10 and after 20 sessions of EEG biofeedback in the frontal (p ≤ 0.001), left parietal (p ≤ 0.036), and temporal (p ≤ 0.003) areas of the brain. A decrease in the spectral characteristics of theta band oscillations was detected: after 10 neurofeedback sessions in the frontal (p ≤ 0.008) and temporal (p ≤ 0.006) areas of both hemispheres, as well as in the parietal area of the left hemisphere (p ≤ 0.005); after 20 sessions, in the central (p ≤ 0.004), frontal (p ≤ 0.001) and temporal (p ≤ 0.001) areas of both hemispheres, as well as in the occipital (p ≤ 0.047) and parietal (p ≤ 0.001) areas of the left hemisphere. The study into the dynamics of bioelectric activity during biofeedback using EEG parameters in 7–10-year-old children with impaired voluntary regulation of higher mental functions allowed us to prove the advisability of 20 sessions, as the increase in high-frequency activity and decrease in low-frequency activity do not stop with the 10th session. Changes in these parameters after 10 EEG biofeedback sessions are expressed mainly in the frontotemporal areas of both hemispheres, while after a course of 20 sessions, in both the frontotemporal and central parietal areas of the brain.

Crossed Cerebellar Diaschisis in Alzheimer’s Disease

2018 ◽  
Vol 15 (13) ◽  
pp. 1267-1275 ◽  
Author(s):  
F.E. Reesink ◽  
D. Vállez García ◽  
C.A. Sánchez-Catasús ◽  
D.E. Peretti ◽  
A.T. Willemsen ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Left Hemisphere ◽  
Pet Imaging ◽  
Fdg Pet ◽  
Pathophysiological Mechanism ◽  
Crossed Cerebellar Diaschisis ◽  
Amyloid Accumulation ◽  
Cerebellar Diaschisis ◽  
18F Fdg

Background: We describe the phenomenon of crossed cerebellar diaschisis (CCD) in four subjects diagnosed with Alzheimer’s disease (AD) according to the National Institute on Aging - Alzheimer Association (NIA-AA) criteria, in combination with 18F-FDG PET and 11C-PiB PET imaging. Methods: 18F-FDG PET showed a pattern of cerebral metabolism with relative decrease most prominent in the frontal-parietal cortex of the left hemisphere and crossed hypometabolism of the right cerebellum. 11C-PiB PET showed symmetrical amyloid accumulation, but a lower relative tracer delivery (a surrogate of relative cerebral blood flow) in the left hemisphere. CCD is the phenomenon of unilateral cerebellar hypometabolism as a remote effect of supratentorial dysfunction of the brain in the contralateral hemisphere. The mechanism implies the involvement of the cortico-ponto-cerebellar fibers. The pathophysiology is thought to have a functional or reversible basis but can also reflect in secondary morphologic change. CCD is a well-recognized phenomenon, since the development of new imaging techniques, although scarcely described in neurodegenerative dementias. Results: To our knowledge this is the first report describing CCD in AD subjects with documentation of both 18F-FDG PET and 11C-PiB PET imaging. CCD in our subjects was explained on a functional basis due to neurodegenerative pathology in the left hemisphere. There was no structural lesion and the symmetric amyloid accumulation did not correspond with the unilateral metabolic impairment. Conclusion: This suggests that CCD might be caused by non-amyloid neurodegeneration. The pathophysiological mechanism, clinical relevance and therapeutic implications of CCD and the role of the cerebellum in AD need further investigation.

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