Asymmetry and Symmetry in Cognitive and Clinical Neuropsychology

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Life Sciences".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 1837

Special Issue Editors


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Guest Editor
Faculty of Psychology, Kazimierz Wielki University, 85-867 Bydgoszcz, Poland
Interests: cognitive aging; neurocognitive aging; cognitive training; neuroplasticity; cognitive interventions; gerontology
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E-Mail Website
Guest Editor
Faculty of Psychology, Kazimierz Wielki University, Bydgoszcz, Poland
Interests: mental illness; clinical assessment; psychological assessment; behavioral psychology; psychopathology; clinical psychiatry; molecular biology; cognitive neuroscience; psychotherapeutic processes; DSM
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Brain lateralization is a well-known phenomenon. Each hemisphere is specialized to receive different types of information, process stimuli differently, and control different types of behavior. Existing research has identified many cognitive and behavioral processes for which hemispheric dominance has been observed. However, subsequent research reveals lateralization-related nuances and indicates that attributing a particular cognitive function exclusively to the left or right hemisphere is oversimplified. Moreover, many neurodevelopmental, neurocognitive, and neuropsychiatric disorders are associated with altered structural and functional asymmetry. It also has implications for lateralized treatments, like brain stimulation. However, there have been inconsistent findings regarding the relationship between brain asymmetry and disorders. We invite submissions of research and review articles that present novel insights into brain lateralization in cognitive and clinical neuropsychology contexts. Additionally, we welcome submissions reporting on applying knowledge related to lateralization in neuropsychological practice, both for individuals without disorders and those presenting with various conditions.

Prof. Dr. Ludmiła Zając-Lamparska
Prof. Dr. Monika Wilkosc-Debczynska
Guest Editors

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Keywords

  • brain lateralization
  • brain asymmetry
  • hemispheric specialization
  • behavioral asymmetry
  • cognition
  • handedness
  • clinical neuropsychology

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Published Papers (1 paper)

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Research

21 pages, 1358 KiB  
Article
Differences in the Lateralization of Theta and Alpha Power During n-Back Task Performance Between Older and Young Adults in the Context of the Hemispheric Asymmetry Reduction in Older Adults (HAROLD) Model
by Ludmiła Zając-Lamparska, Emilia Zabielska-Mendyk, Dariusz Zapała and Paweł Augustynowicz
Symmetry 2024, 16(12), 1623; https://doi.org/10.3390/sym16121623 - 7 Dec 2024
Cited by 1 | Viewed by 1253
Abstract
Hemispheric Asymmetry Reduction in Old Adults (HAROLD) is one of the most well-known models of compensatory brain involvement in older adults. Most evidence supports its occurrence from the perspective of PET and fMRI studies, with a deficiency in electroencephalographic research in this domain. [...] Read more.
Hemispheric Asymmetry Reduction in Old Adults (HAROLD) is one of the most well-known models of compensatory brain involvement in older adults. Most evidence supports its occurrence from the perspective of PET and fMRI studies, with a deficiency in electroencephalographic research in this domain. Therefore, we aimed to investigate the possibility of identifying the HAROLD pattern in older adults’ power of theta and alpha. The study sample comprised 50 older adults and 60 young adults performing n-back tasks while recording EEG signals. The level of cognitive performance and the theta and alpha power for pairs of symmetrical electrodes in the prefrontal, frontal, and parietal areas were analyzed. Older adults exhibited inferior cognitive performance compared to young adults and heightened theta power in the right hemisphere within the prefrontal and parietal areas. However, they also demonstrated increased alpha power in the right frontal pole, which contradicts the compensatory effects of theta power. Moreover, the two indicated phenomena of lateralization of theta and alpha power in older adults were unrelated to individual cognitive performance. The results make it challenging to discern whether the revealed age-related differences in theta and alpha power lateralization denote compensation, dedifferentiation, or nonselective recruitment as neutral features of brain activity in old adults. Full article
(This article belongs to the Special Issue Asymmetry and Symmetry in Cognitive and Clinical Neuropsychology)
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