Unconscious priming requires early visual cortex at specific temporal phases of processing.

Abstract:

:Although examples of unconscious shape priming have been well documented, whether such priming requires early visual cortex (V1/V2) has not been established. In the current study, we used TMS of V1/V2 at varying temporal intervals to suppress the visibility of preceding shape primes while the interval between primes and targets was kept constant. Our results show that, although conscious perception requires V1/V2, unconscious priming can occur without V1/V2 at an intermediate temporal interval but not at early (5-25 msec) or later (65-125 msec) stages of processing. Because the later time window of unconscious priming suppression has been proposed to interfere with feedback processing, our results further suggest that feedback processing is also essential for unconscious priming and may not be a sufficient condition for conscious vision.

journal_name

J Cogn Neurosci

authors

Persuh M,Ro T

doi

10.1162/jocn_a_00423

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

1493-503

issue

9

eissn

0898-929X

issn

1530-8898

journal_volume

25

pub_type

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