K. Kotani et al., TOPOGRAPHICAL PATTERNS OF ERP ELICITED BY DIFFERENT VISUAL INFORMATION-PROCESSING TASKS, Perceptual and motor skills, 77(1), 1993, pp. 299-306
Topographical patterns of event-related potentials were compared on a
visual display terminal for a data-input task and a number-comparison
task. Maximum negative peaks were found in the frontal and central reg
ions for the former but at mid-line locations for the latter. Latencie
s were shorter in the occipital regions than in the frontal regions fo
r the former and the opposite pattern was found for the latter. An ana
lysis of variance indicated that hemispheric location significantly af
fected the amplitude of peaks. On the other hand, latencies were affec
ted by the task, frontal and occipital regions, and their interaction.
These results suggest that a pattern of the topographic display of ev
ent-related potentials can be used as an objective means for classifyi
ng visual tasks.