| Performance of younger and older adults in lateralised right and left hemisphere asymmetry tasks supports the HAROLD model. | |
| | |
MedLine Citation:
|
PMID: 23030582 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The population of industrialised societies has increased tremendously over the last century, raising the question of how an enhanced age affects cognition. The relevance of two models of healthy ageing are contrasted in the present study that both target the functioning of the two cerebral hemispheres. The right hemi-ageing model (RHAM) assumes that functions of the right hemisphere decline before those of the left hemisphere. The Hemispheric Asymmetry Reduction in Older Adults (HAROLD) model suggests that the contralateral hemisphere supports the normally superior hemisphere in a given task resulting in a reduced hemispheric asymmetry overall. In a mixed design 20 younger and 20 older adults performed both a task assessing a left (lateralised lexical decisions) and a right (sex decisions on chimeric faces) hemisphere advantage. Results indicated that lateralised performance in both tasks was attenuated in older as compared to younger adults, in particular in men. These observations support the HAROLD model. Future studies should investigate whether this reduced functional hemispheric asymmetry in older age results from compensatory processes or from a process of de-differentiation. |
| | |
Authors:
|
Kevin Collins; Christine Mohr |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-10-3 |
Journal Detail:
|
Title: Laterality Volume: - ISSN: 1464-0678 ISO Abbreviation: Laterality Publication Date: 2012 Oct |
Date Detail:
|
Created Date: 2012-10-3 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9609064 Medline TA: Laterality Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
a Institute of Psychology , University of Lausanne , Lausanne , Switzerland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Electrokinetic analysis to reveal composition and structure of biohybrid hydrogels.
Next Document: Immunohistological expression of HIF-1?, GLUT-1, Bcl-2 and Ki-67 in consecutive biopsies during chem...