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Entrainment of Neuronal Oscillations as a Mechanism of Attentional Selection
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Entrainment of Neuronal Oscillations as a Mechanism of Attentional Selection
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Journal Article
Entrainment of Neuronal Oscillations as a Mechanism of Attentional Selection
2008
Overview
Whereas gamma-band neuronal oscillations clearly appear integral to visual attention, the role of lower-frequency oscillations is still being debated. Mounting evidence indicates that a key functional property of these oscillations is the rhythmic shifting of excitability in local neuronal ensembles. Here, we show that when attended stimuli are in a rhythmic stream, delta-band oscillations in the primary visual cortex entrain to the rhythm of the stream, resulting in increased response gain for task-relevant events and decreased reaction times. Because of hierarchical cross-frequency coupling, delta phase also determines momentary power in higher-frequency activity. These instrumental functions of low-frequency oscillations support a conceptual framework that integrates numerous earlier findings.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
/ Animals
/ Biological and medical sciences
/ Brain
/ Cues
/ Eye and associated structures. Visual pathways and centers. Vision
/ Fundamental and applied biological sciences. Psychology
/ Male
/ Neurons
/ Psychology. Psychoanalysis. Psychiatry
/ Psychology. Psychophysiology
/ streams
