Alpha power increases in right parietal cortex reflects focused internal attention.

ABSTRACT: This study investigated the functional significance of EEG alpha power increases, a finding that is consistently observed in various memory tasks and specifically during divergent thinking. It was previously shown that alpha power is increased when tasks are performed in mind-e.g., when bottom-up processing is prevented. This study aimed to examine the effect of task-immanent differences in bottom-up processing demands by comparing two divergent thinking tasks, one intrinsically relying on bottom-up processing (sensory-intake task) and one that is not (sensory-independence task). In both tasks, stimuli were masked in half of the trials to establish conditions of higher and lower internal processing demands. In line with the hypotheses, internal processing affected performance and led to in

SUBMITTER: Benedek M 

PROVIDER: S-EPMC3989020 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature