Cueing Attention after the Stimulus Is Gone Can Retrospectively Trigger Conscious Perception

被引:104
作者
Sergent, Claire [1 ,2 ,3 ,4 ]
Wyart, Valentin [5 ,6 ]
Babo-Rebelo, Mariana [5 ]
Cohen, Laurent [2 ,3 ,4 ,7 ]
Naccache, Lionel [2 ,3 ,4 ,7 ]
Tallon-Baudry, Catherine [5 ]
机构
[1] Univ Paris 05, CNRS, UMR 8158, Lab Psychol Percept, F-75006 Paris, France
[2] Univ Paris 06, Ctr Rech Inst Cerveau & Moelle Epiniere CRICM, UMRS 975, F-75013 Paris, France
[3] INSERM, U975, F-75013 Paris, France
[4] CNRS, UMR 7225, F-75013 Paris, France
[5] Ecole Normale Super, Inst Etud Cognit, INSERM, Lab Neurosci Cognit,U960, F-75005 Paris, France
[6] Univ Oxford, Dept Expt Psychol, Oxford OX1 3UD, England
[7] Grp Hosp Pitie Salpetriere, AP HP, F-75013 Paris, France
关键词
SHORT-TERM-MEMORY; VISUAL-ATTENTION; WORKING-MEMORY; ICONIC MEMORY; AWARENESS; CONTRAST; REPRESENTATIONS; NEUROSCIENCE; BLINDSIGHT; HYPOTHESIS;
D O I
10.1016/j.cub.2012.11.047
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Is our perceptual experience of a stimulus entirely determined during the early buildup of the sensory representation, within 100 to 150 ms following stimulation [1, 2]? Or can later influences, such as sensory reactivation, still determine whether we become conscious of a stimulus [3, 4]? Late visual reactivation can be experimentally induced by postcueing attention after visual stimulus offset [5]. In a contrary approach from previous work on postcued attention and visual short-term memory, which used multiple item displays [6, 7], we tested the influence of postcued attention on perception, using a single visual stimulus (Gabor patch) at threshold contrast. We showed that attracting attention to the stimulus location 100 to 400 ms after presentation still drastically improved the viewers' objective capacity to detect its presence and to discriminate its orientation, along with drastic increase in subjective visibility. This retroperception effect demonstrates that postcued attention can retrospectively trigger the conscious perception of a stimulus that would otherwise have escaped consciousness. It was known that poststimulus events could either suppress consciousness, as in masking, or alter conscious content, as in the flash-lag illusion. Our results show that conscious perception can also be triggered by an external event several hundred ms after stimulus offset, underlining unsuspected temporal flexibility in conscious perception.
引用
收藏
页码:150 / 155
页数:6
相关论文
共 38 条