Contributions of stimulus encoding and memory search to right hemisphere superiority in face recognition: behavioural and electrophysiological evidence.
The relative contributions of stimulus encoding and memory search to right hemisphere (RH) superiority in face recognition were investigated in a memory search task with lateralized probe stimulus presentation. RH superiority in reaction time and latency of a late positive ERP component was independent of stimulus degradations, but increased as a function of memory set size. These results suggest equal efficiency of the hemispheres in stimulus encoding, but RH superiority in memory search. In addition, a long-lasting ERP negativity contralateral to the stimulated hemifield is discussed with reference to models of hemispheric processing in hemifield studies.
Schweinberger
S R
SR
University of Konstanz, F.R.G.
Sommer
W
W
D000328:Adult; D004569:Electroencephalography; D004585:Electrooculography; D005071:Evoked Potentials / Q000502:physiology; D005145:Face; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*; D010364:Pattern Recognition, Visual; D011930:Reaction Time; D013647:Task Performance and Analysis