Event Related Hemodynamics and Potentials evoked by Visual Attention Task

Abstract

This paper discusses “visual attention” related hemodynamics and potentials during performance of modified paced visual serial addition test (mPVSAT). In researches for human cognitive function, “attention” is regarded as the basis of all mental abilities or human actions. The mPVSAT task, as our revised version of standardized test concerning attention, also needs higher-order attention to solve the test. Then, in order to make clear the mechanism of attentional function, brain activity is evaluated by event related hemodynamics (ERH) and event related potentials (ERP) in our study. From the results, some typical areas with high processing speed or large volume of blood flow are shown. Judgement and recognition process tend to be slow while complicated stimulus in visual attention task.