Cargando…
Unconscious processing of invisible visual stimuli
Unconscious processing of subliminal visual information, as illustrated by the above-chance accuracy in discriminating invisible visual stimuli, is evident in both blindsight patients and healthy human observers. However, the dependence of such unconscious processing on stimulus properties remains u...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5150948/ https://www.ncbi.nlm.nih.gov/pubmed/27941851 http://dx.doi.org/10.1038/srep38917 |
_version_ | 1782474294113075200 |
---|---|
author | Song, Chen Yao, Haishan |
author_facet | Song, Chen Yao, Haishan |
author_sort | Song, Chen |
collection | PubMed |
description | Unconscious processing of subliminal visual information, as illustrated by the above-chance accuracy in discriminating invisible visual stimuli, is evident in both blindsight patients and healthy human observers. However, the dependence of such unconscious processing on stimulus properties remains unclear. Here we studied the impact of stimulus luminance and stimulus complexity on the extent of unconscious processing. A testing stimulus presented to one eye was rendered invisible by a masking stimulus presented to the other eye, and healthy human participants made a forced-choice discrimination of the stimulus identity followed by a report of the perceptual awareness. Without awareness of the stimulus existence, participants could nevertheless reach above-chance accuracy in discriminating the stimulus identity. Importantly, the discrimination accuracy for invisible stimuli increased with the stimulus luminance and decreased with the stimulus complexity. These findings suggested that the input signal strength and the input signal complexity can affect the extent of unconscious processing without altering the subjective awareness. |
format | Online Article Text |
id | pubmed-5150948 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51509482016-12-19 Unconscious processing of invisible visual stimuli Song, Chen Yao, Haishan Sci Rep Article Unconscious processing of subliminal visual information, as illustrated by the above-chance accuracy in discriminating invisible visual stimuli, is evident in both blindsight patients and healthy human observers. However, the dependence of such unconscious processing on stimulus properties remains unclear. Here we studied the impact of stimulus luminance and stimulus complexity on the extent of unconscious processing. A testing stimulus presented to one eye was rendered invisible by a masking stimulus presented to the other eye, and healthy human participants made a forced-choice discrimination of the stimulus identity followed by a report of the perceptual awareness. Without awareness of the stimulus existence, participants could nevertheless reach above-chance accuracy in discriminating the stimulus identity. Importantly, the discrimination accuracy for invisible stimuli increased with the stimulus luminance and decreased with the stimulus complexity. These findings suggested that the input signal strength and the input signal complexity can affect the extent of unconscious processing without altering the subjective awareness. Nature Publishing Group 2016-12-12 /pmc/articles/PMC5150948/ /pubmed/27941851 http://dx.doi.org/10.1038/srep38917 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Song, Chen Yao, Haishan Unconscious processing of invisible visual stimuli |
title | Unconscious processing of invisible visual stimuli |
title_full | Unconscious processing of invisible visual stimuli |
title_fullStr | Unconscious processing of invisible visual stimuli |
title_full_unstemmed | Unconscious processing of invisible visual stimuli |
title_short | Unconscious processing of invisible visual stimuli |
title_sort | unconscious processing of invisible visual stimuli |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5150948/ https://www.ncbi.nlm.nih.gov/pubmed/27941851 http://dx.doi.org/10.1038/srep38917 |
work_keys_str_mv | AT songchen unconsciousprocessingofinvisiblevisualstimuli AT yaohaishan unconsciousprocessingofinvisiblevisualstimuli |