Topic: distractor suppression

Broadband high-frequency activity (BHA, 80-150 Hz) represents a crucial analytic signal in human intracranial recordings, with recent studies showing consistent findings of BHA responses to visual stimulation in magnetoencephalography (MEG). However, it is unclear whether BHA indeed represents visual cortex input or primarily indicates internal changes in brain states. Across three studies, we tested whether BHA signals visual input or changes with internal brain states and can serve as a marker for spatial attention. Using simultaneous EEG-MEG recordings in healthy human subjects, we compared

Selective attention is a crucial cognitive function facilitates the relevant-sensory-input processing (i.e., targets) and filters out irrelevant information (i.e., distractors). Prior studies illustrated the ability to selectively process behaviorally sensory information declines with age, especially in older adults who exhibit Mild Cognitive Impairment (MCI), a transitional stage from healthy aging to dementia, e.g. Alzheimer’s disease. Less is known regarding how neural mechanisms help eliminating distractors go awry in MCI. We hypothesized the fronto-parietal attentional network, which is i