A dissociation of attention and awareness in phase-sensitive but not phase-insensitive visual channels

Jan W. Brascamp, Jeroen J.A. Van Boxtel, Tomas H.J. Knapen, Randolph Blake

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The elements most vivid in our conscious awareness are the ones to which we direct our attention. Scientific study confirms the impression of a close bond between selective attention and visual awareness, yet the nature of this association remains elusive. Using visual afterimages as an index, we investigate neural processing of stimuli as they enter awareness and as they become the object of attention. We find evidence of response enhancement accompanying both attention and awareness, both in the phase-sensitive neural channels characteristic of early processing stages and in the phase-insensitive channels typical of higher cortical areas. The effects of attention and awareness on phaseinsensitive responses are positively correlated, but in the same experiments, we observe no correlation between the effects on phase-sensitive responses. This indicates independent signatures of attention and awareness in early visual areas yet a convergence of their effects at more advanced processing stages.

Original languageEnglish
Pages (from-to)2326-2344
Number of pages19
JournalJournal of Cognitive Neuroscience
Volume22
Issue number10
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Afterimage
stimulus
Dissociation
experiment
evidence
Selective Attention
Experiment
Stimulus
Signature
Enhancement
Conscious

Cite this

@article{a8b3672e7fe64aaeb03a12f848de23ff,
title = "A dissociation of attention and awareness in phase-sensitive but not phase-insensitive visual channels",
abstract = "The elements most vivid in our conscious awareness are the ones to which we direct our attention. Scientific study confirms the impression of a close bond between selective attention and visual awareness, yet the nature of this association remains elusive. Using visual afterimages as an index, we investigate neural processing of stimuli as they enter awareness and as they become the object of attention. We find evidence of response enhancement accompanying both attention and awareness, both in the phase-sensitive neural channels characteristic of early processing stages and in the phase-insensitive channels typical of higher cortical areas. The effects of attention and awareness on phaseinsensitive responses are positively correlated, but in the same experiments, we observe no correlation between the effects on phase-sensitive responses. This indicates independent signatures of attention and awareness in early visual areas yet a convergence of their effects at more advanced processing stages.",
author = "Brascamp, {Jan W.} and {Van Boxtel}, {Jeroen J.A.} and Knapen, {Tomas H.J.} and Randolph Blake",
year = "2010",
doi = "10.1162/jocn.2009.21397",
language = "English",
volume = "22",
pages = "2326--2344",
journal = "Journal of Cognitive Neuroscience",
issn = "0898-929X",
publisher = "MIT Press - Journals",
number = "10",

}

A dissociation of attention and awareness in phase-sensitive but not phase-insensitive visual channels. / Brascamp, Jan W.; Van Boxtel, Jeroen J.A.; Knapen, Tomas H.J.; Blake, Randolph.

In: Journal of Cognitive Neuroscience, Vol. 22, No. 10, 2010, p. 2326-2344.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A dissociation of attention and awareness in phase-sensitive but not phase-insensitive visual channels

AU - Brascamp, Jan W.

AU - Van Boxtel, Jeroen J.A.

AU - Knapen, Tomas H.J.

AU - Blake, Randolph

PY - 2010

Y1 - 2010

N2 - The elements most vivid in our conscious awareness are the ones to which we direct our attention. Scientific study confirms the impression of a close bond between selective attention and visual awareness, yet the nature of this association remains elusive. Using visual afterimages as an index, we investigate neural processing of stimuli as they enter awareness and as they become the object of attention. We find evidence of response enhancement accompanying both attention and awareness, both in the phase-sensitive neural channels characteristic of early processing stages and in the phase-insensitive channels typical of higher cortical areas. The effects of attention and awareness on phaseinsensitive responses are positively correlated, but in the same experiments, we observe no correlation between the effects on phase-sensitive responses. This indicates independent signatures of attention and awareness in early visual areas yet a convergence of their effects at more advanced processing stages.

AB - The elements most vivid in our conscious awareness are the ones to which we direct our attention. Scientific study confirms the impression of a close bond between selective attention and visual awareness, yet the nature of this association remains elusive. Using visual afterimages as an index, we investigate neural processing of stimuli as they enter awareness and as they become the object of attention. We find evidence of response enhancement accompanying both attention and awareness, both in the phase-sensitive neural channels characteristic of early processing stages and in the phase-insensitive channels typical of higher cortical areas. The effects of attention and awareness on phaseinsensitive responses are positively correlated, but in the same experiments, we observe no correlation between the effects on phase-sensitive responses. This indicates independent signatures of attention and awareness in early visual areas yet a convergence of their effects at more advanced processing stages.

UR - http://www.scopus.com/inward/record.url?scp=77952687881&partnerID=8YFLogxK

U2 - 10.1162/jocn.2009.21397

DO - 10.1162/jocn.2009.21397

M3 - Article

VL - 22

SP - 2326

EP - 2344

JO - Journal of Cognitive Neuroscience

JF - Journal of Cognitive Neuroscience

SN - 0898-929X

IS - 10

ER -