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Temporal structure coding with and without awareness

Faivre, N. and Koch, C. (2014) Temporal structure coding with and without awareness. Cognition, 131 (3). pp. 404-414. ISSN 0010-0277. doi:10.1016/j.cognition.2014.02.008.

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In order to interpret a constantly changing environment, visual events far apart in space and time must be integrated into a unified percept. While spatial properties of invisible signals are known to be encoded without awareness, the fate of temporal properties remains largely unknown. Here, we probed temporal integration for two distinct motion stimuli that were either visible or rendered invisible using continuous flash suppression. We found that when invisible, both the direction of apparent motion and the gender of point-light walkers were processed only when defined across short time periods (i.e., respectively 100 ms and 1000 ms). This limitation was not observed under full visibility. These similar findings at two different hierarchical levels of processing suggest that temporal integration windows shrink in the absence of perceptual awareness. We discuss this phenomenon as a key prediction of the global neuronal workspace and the information integration theories of consciousness.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle
Faivre, N.0000-0001-6011-4921
Koch, C.0000-0001-6482-8067
Additional Information:© 2014 Elsevier B.V. Received 30 July 2013; Revised 7 January 2014; Accepted 27 February 2014; Available online 27 March 2014. This research was supported by G. Harold & Leila Y. Mathers Charitable Foundation. N.F was supported by the Fyssen Foundation. The authors are very grateful to Niko Troje for providing the point-light walkers stimuli, and to Liad Mudrik and Jeroen van Boxtel for their help with the manuscript. The authors declare no competing financial interests.
Group:Koch Laboratory (KLAB)
Funding AgencyGrant Number
G. Harold & Leila Y. Mathers Charitable FoundationUNSPECIFIED
Fyssen FoundationUNSPECIFIED
Subject Keywords:Consciousness; Temporal integration; Continuous flash suppression; Apparent motion; Biological motion
Issue or Number:3
Record Number:CaltechAUTHORS:20140612-084148732
Persistent URL:
Official Citation:N. Faivre, C. Koch, Temporal structure coding with and without awareness, Cognition, Volume 131, Issue 3, June 2014, Pages 404-414, ISSN 0010-0277, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46224
Deposited By: Tony Diaz
Deposited On:12 Jun 2014 19:36
Last Modified:10 Nov 2021 17:22

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