| Rescuing stimuli from invisibility: Inducing a momentary release from visual masking with pre-target entrainment. | |
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MedLine Citation:
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PMID: 20035933 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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At near-threshold levels of stimulation, identical stimulus parameters can result in very different phenomenal experiences. Can we manipulate which stimuli reach consciousness? Here we show that consciousness of otherwise masked stimuli can be experimentally induced by sensory entrainment. We preceded a backward-masked stimulus with a series of rapid visual events presented at 12 Hz for 800 ms. Peaks in visual sensitivity (d') were observed when the target appeared at the time that the next entraining stimuli would have occurred. Observers' sensitivity for identical masked near-threshold stimuli increased by factors as large as 55%, but only at this precise moment in time. These data thus reveal that awareness of near-threshold stimuli can be manipulated by entrainment to rhythmic events, supporting the functional role of induced oscillations in underlying cortical excitability, and suggest a plausible mechanism of temporal attention. |
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Authors:
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Kyle E Mathewson; Monica Fabiani; Gabriele Gratton; Diane M Beck; Alejandro Lleras |
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Publication Detail:
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Type: Journal Article Date: 2009-12-24 |
Journal Detail:
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Title: Cognition Volume: 115 ISSN: 1873-7838 ISO Abbreviation: Cognition Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-01 Completed Date: 2010-05-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0367541 Medline TA: Cognition Country: Netherlands |
Other Details:
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Languages: eng Pagination: 186-91 Citation Subset: IM |
Copyright Information:
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Copyright 2009 Elsevier B.V. All rights reserved. |
Affiliation:
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Beckman Institute, Department of Psychology, University of Illinois at Urbana Champaign, USA. kmathew3@illinois.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Attention / physiology* Awareness / physiology* Consciousness / physiology* Humans Perceptual Masking / physiology* Photic Stimulation Psychomotor Performance / physiology Reaction Time / physiology Sensory Thresholds / physiology* Visual Perception / physiology |
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