Please use this identifier to cite or link to this item:
Title: Gamma flicker triggers attentional selection without awareness
Authors: Bauer, F
Cheadle, SW
Parton, A
Mueller, HJ
Usher, M
Keywords: Visual attention;Neural synchrony;Gamma;Psychophysics;Subliminal
Issue Date: 2009
Publisher: National Academy of Sciences
Citation: Proceedings of the National Academy of Sciences of the United States of America, 106(5), 1666 - 1671, 2009
Abstract: Gamma band modulations in neural activity have been proposed to mediate attentional processes. To support a causal link between gamma activity and attentional selection, we attempt to evoke gamma oscillations by a 50-Hz subliminal flicker. We find that a subliminal 50-Hz flicker at a target location, before target presentation, speeds up and enhances target detection and discrimination. This effect is specific to the middle of the gamma range because it is not evident at <35-Hz flicker. It requires 300 ms to build up, dissipates within 250 ms of flicker offset, and shows a tendency to invert after 500 ms. The results are discussed in relation to a role for gamma band neural synchrony in the allocation of visual attention.
Description: This is the author's accepted manuscript (under the title '50 Hz flicker triggers attentional selection without awareness'). The final published article is available from the link below, copyright @ The National Academy of Sciences.
ISSN: 0027-8424
Appears in Collections:Psychology
Dept of Life Sciences Research Papers

Files in This Item:
File Description SizeFormat 
Fulltext.pdf350.18 kBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.