Event-related brain potentials during selective visual discriminations

Kenzo KONISHI, Tsunetaka OKITA
1987 Japanese Journal of Physiological Psychology and Psychophysiology  
The hemispheric asymmetry of negative event-related potentials with selective attention was examined in eight adults while the subjects were instructed to detect plant names ( targets ) among animal names if they were presented in red ( or blue ) and to ignore those names if they were in blue ( or red ). Negativity to names in the attended color was maximum at the vertex and lateralized at the left hemisphere. However, this asymmetry was not found when subjects performed a discrimination on
more » ... verbal task. In addition, those data on reaction time suggested that the attentional negativity developed during a stimulus discrimination depending on whether the relevant item was a target. The negativity was interpreted as partially reflecting a processing stage associated with the target discrimination for a relevant stimulus.
doi:10.5674/jjppp1983.5.1 fatcat:psujqip2ondj7jgidmannt55mu