Behavioral performance follows the time course of neural facilitation and suppression during cued shifts of feature-selective attention.

ABSTRACT: A central question in the field of attention is whether visual processing is a strictly limited resource, which must be allocated by selective attention. If this were the case, attentional enhancement of one stimulus should invariably lead to suppression of unattended distracter stimuli. Here we examine voluntary cued shifts of feature-selective attention to either one of two superimposed red or blue random dot kinematograms (RDKs) to test whether such a reciprocal relationship between enhancement of an attended and suppression of an unattended stimulus can be observed. The steady-state visual evoked potential (SSVEP), an oscillatory brain response elicited by the flickering RDKs, was measured in human EEG. Supporting limited resources, we observed both an enhancement of the attended and a

SUBMITTER: Andersen SK 

PROVIDER: S-EPMC2922290 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature