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Title: Robust Single Trial Identification of Conscious Percepts Triggered by Sensory Events of Variable Saliency
Authors: Teixeira, Marta 
Pires, Gabriel 
Raimundo, Miguel 
Nascimento, Sérgio 
Almeida, Vasco 
Castelo-Branco, Miguel 
Issue Date: 23-Jan-2014
Publisher: PLOS
Citation: TEIXEIRA, Marta [et. al] - Robust Single Trial Identification of Conscious Percepts Triggered by Sensory Events of Variable Saliency. "PLOS one". ISSN 1932-6203. Vol. 9 Nº. 1 (2014) p. e86201
Serial title, monograph or event: PLOS one
Volume: 9
Issue: 1
Abstract: The neural correlates of visual awareness are elusive because of its fleeting nature. Here we have addressed this issue by using single trial statistical ‘‘brain reading’’ of neurophysiological event related (ERP) signatures of conscious perception of visual attributes with different levels of saliency. Behavioral reports were taken at every trial in 4 experiments addressing conscious access to color, luminance, and local phase offset cues. We found that single trial neurophysiological signatures of target presence can be observed around 300 ms at central parietal sites. Such signatures are significantly related with conscious perception, and their probability is related to sensory saliency levels. These findings identify a general neural correlate of conscious perception at the single trial level, since conscious perception can be decoded as such independently of stimulus salience and fluctuations of threshold levels. This approach can be generalized to successfully detect target presence in other individuals.
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0086201
Rights: openAccess
Appears in Collections:I&D IBILI - Artigos em Revistas Internacionais
I&D ICNAS - Artigos em Revistas Internacionais
I&D ISR - Artigos em Revistas Internacionais

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