Intra-modality selective attention to dioptically- and dichoptically-presented patterns and visual evoked responses in humans

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Lynda Elizabeth Wilson (Creator)
The University of North Carolina at Greensboro (UNCG )
Web Site:
M. Russell Harter

Abstract: Human visual evoked responses (VERs) to randomly presented dioptic and dichoptic patterns were measured in an attempt to determine whether the similarity of patterns presented to the two eyes influences S's ability to attend to one eye. In addition, an attempt was made to investigate the effects of selective attention when differential preparation and peripheral influences are reduced to a minimum. Five Ss were presented four pattern conditions in which they were to count the number of stimuli presented to one eye (relevant stimuli) and ignore stimuli presented to the other eye (irrelevant stimuli). Patterns to the two eyes were either presented dioptically (i.e., identical color and line orientation) or dichoptically (i.e., different color and/or line orientation. Differential preparation was controlled for by randomly presenting patterns to either eye at a constant fast rate (once every 550 msec.). Peripheral influences were reduced to a minimum by requiring central fixation and fusion and by maintaining constant accommodation and vergence.

Additional Information

Language: English
Date: 1974
Visual evoked response

Email this document to