Document Detail


Estimation of interhemispheric dynamics from simple unimanual reaction time to extrafoveal stimuli.
MedLine Citation:
PMID:  1306109     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This essay reviews research on interhemispheric transfer time derived from simple unimanual reaction time to hemitachistoscopically presented visual stimuli. Part 1 reviews major theoretical themes including (a) the significance of the eccentricity effect on interhemispheric transfer time in the context of proposed underlying neurohistological constraints; (b) the significance of gender differences in interhemispheric transfer time and findings in dyslexics and left-handers in the context of a fetal brain testosterone model; and (c) the significance of complexity effects on interhemispheric transfer time in a context of "dynamic" vs. "hard-wired" concepts of the underlying interhemispheric communication systems. Part 2 consists of a meta-analysis of 49 published behavioral experiments, in view of drawing a portrait of the best set of experimental conditions apt to produce salient, reliable, and statistically significant measures of interhemispheric transfer time, namely (a) index rather than thumb response, (b) low rather than high target luminance, (c) short rather than prolonged target display, and (d) very eccentric rather than near-foveal stimulus location. Part 3 proposes a theoretical model of interhemispheric transfer time, postulating the measurable existence of fast and slow interhemispheric channels. The proposed mechanism's evolutionary adaptive value, the neurophysiological evidence in its support, and favorable functional evidence from studies of callosotomized patients are then presented followed by proposals for critical experimental tests of the model.
Authors:
C M Braun
Related Documents :
24219329 - Sub-lethal exposure to crude oil enhances positive phototaxis in the calanoid copepod c...
21172899 - Motion-induced blindness and microsaccades: cause and effect.
15757829 - The interaction of response complexity and instructional set.
2730969 - An informational approach to reaction times.
24272659 - Interaction of light and temperature on seed germination of rumex obtusifolius l.
23743259 - Artificial light at night alters delayed-type hypersensitivity reaction in response to ...
8329209 - Motor units within the normal rat medial gastrocnemius.
15168899 - Neural correlates of the effects of morphological family frequency and family size: an ...
20675809 - Somatotopic or spatiotopic? frame of reference for localizing thermal sensations under ...
Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Neuropsychology review     Volume:  3     ISSN:  1040-7308     ISO Abbreviation:  Neuropsychol Rev     Publication Date:  1992 Dec 
Date Detail:
Created Date:  1993-07-30     Completed Date:  1993-07-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9009029     Medline TA:  Neuropsychol Rev     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  321-65     Citation Subset:  IM; S    
Affiliation:
Laboratoire de Neurosciences Cognitives, (UQAM), Université du Québecà Montréal, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Brain / physiology
Cognition
Corpus Callosum / physiology*
Decision Making
Female
Functional Laterality / physiology*
Humans
Male
Reaction Time / physiology*
Sex Factors
Visual Fields
Visual Perception / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Acculturation, education, and income as determinants of cigarette smoking in New Mexico Hispanics.
Next Document:  Partial sequence and polymerase chain reaction-mediated analysis of expression of the human CYP2C18 ...