Accession Number : ADA118978

Title :   Factors Influencing Hemispheric Specialization.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Royster,Brenda Joyce

PDF Url : ADA118978

Report Date : May 1982

Pagination or Media Count : 39

Abstract : To determine whether hemispheric specialization for visuopatial functions occurs as predicted from existing models of cerebral lateralization processes, 16 participants were bilaterally presented face stimuli using a tachistoscope. Both familiar and unfamiliar faces were utilized with a memory and nonmemory condition for each. Subjects made judgements of 'same' when faces were identical to each other and 'different' when faces were of different persons. As predicted, the reaction times to the unfamiliar memorized faces weere significantly faster when the stimuli were presented to the left visual field/right hemisphere. reaction times to the unfamiliar faces also showed a left visual field/right hemisphere advantage for judgements of different but not for judgements of same. No visual-field differences were found using familiar stimuli for either memory condition or judgement type, indicating that different processes may underlie the analysis of the two stimulus types in addition to the two judgement types.

Descriptors :   *Judgement(Psychology), Stimuli, Hemispheres, Vision, Specialization, Reaction time

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE