Cortical mechanisms specific to explicit visual object recognition

Moshe Bar; Roger B.H. Tootell; Daniel L. Schacter; Doug N. Greve; Bruce Fischl; Janine D. Mendola; Bruce R. Rosen; Anders M. Dale

doi:10.1016/S0896-6273(01)00224-0

Cortical mechanisms specific to explicit visual object recognition

Moshe Bar
, Roger B.H. Tootell
, Daniel L. Schacter
, Doug N. Greve
, Bruce Fischl
, Janine D. Mendola
, Bruce R. Rosen
, Anders M. Dale

Massachusetts General Hospital
Harvard University

Research output: Contribution to journal › Article › peer-review

400 Scopus citations

Abstract

The cortical mechanisms associated with conscious object recognition were studied using functional magnetic resonance imaging (fMRI). Participants were required to recognize pictures of masked objects that were presented very briefly, randomly and repeatedly. This design yielded a gradual accomplishment of successful recognition. Cortical activity in a ventrotemporal visual region was linearly correlated with perception of object identity. Therefore, although object recognition is rapid, awareness of an object's identity is not a discrete phenomenon but rather associated with gradually increasing cortical activity. Furthermore, the focus of the activity in the temporal cortex shifted anteriorly as subjects reported an increased knowledge regarding identity. The results presented here provide new insights into the processes underlying explicit object recognition, as well as the analysis that takes place immediately before and after recognition is possible.

Original language	English
Pages (from-to)	529-535
Number of pages	7
Journal	Neuron
Volume	29
Issue number	2
DOIs	https://doi.org/10.1016/S0896-6273(01)00224-0
State	Published - Feb 2001
Externally published	Yes

Bibliographical note

Funding Information:
We thank I. Biederman for insightful comments; two anonymous reviewers for constructive advice; E. Halgren, F. Newell, A. Wagner, and C. West for helpful discussions; E. E. Cooper for providing some of the stimuli; and U. Viswanathan for assistance with the experiment. Supported by the McDonnell-Pew Program in Cognitive Neuroscience 99-6 #CNS-QUA.05 (to M. B.), NEI #EY07980 (to R. B. H. T.), NIMH #RO1 MH60941 (to D. L. S.), and NIH #R01 RR13609 and Whitaker Foundation (to A. M. D.).

Funding

We thank I. Biederman for insightful comments; two anonymous reviewers for constructive advice; E. Halgren, F. Newell, A. Wagner, and C. West for helpful discussions; E. E. Cooper for providing some of the stimuli; and U. Viswanathan for assistance with the experiment. Supported by the McDonnell-Pew Program in Cognitive Neuroscience 99-6 #CNS-QUA.05 (to M. B.), NEI #EY07980 (to R. B. H. T.), NIMH #RO1 MH60941 (to D. L. S.), and NIH #R01 RR13609 and Whitaker Foundation (to A. M. D.).

Funders	Funder number
National Institutes of Health	01 RR13609
National Institute of Mental Health	R01MH060941
National Eye Institute	07980
Whitaker Foundation

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10.1016/S0896-6273(01)00224-0

Cite this

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title = "Cortical mechanisms specific to explicit visual object recognition",

abstract = "The cortical mechanisms associated with conscious object recognition were studied using functional magnetic resonance imaging (fMRI). Participants were required to recognize pictures of masked objects that were presented very briefly, randomly and repeatedly. This design yielded a gradual accomplishment of successful recognition. Cortical activity in a ventrotemporal visual region was linearly correlated with perception of object identity. Therefore, although object recognition is rapid, awareness of an object's identity is not a discrete phenomenon but rather associated with gradually increasing cortical activity. Furthermore, the focus of the activity in the temporal cortex shifted anteriorly as subjects reported an increased knowledge regarding identity. The results presented here provide new insights into the processes underlying explicit object recognition, as well as the analysis that takes place immediately before and after recognition is possible.",

author = "Moshe Bar and Tootell, \{Roger B.H.\} and Schacter, \{Daniel L.\} and Greve, \{Doug N.\} and Bruce Fischl and Mendola, \{Janine D.\} and Rosen, \{Bruce R.\} and Dale, \{Anders M.\}",

note = "Funding Information: We thank I. Biederman for insightful comments; two anonymous reviewers for constructive advice; E. Halgren, F. Newell, A. Wagner, and C. West for helpful discussions; E. E. Cooper for providing some of the stimuli; and U. Viswanathan for assistance with the experiment. Supported by the McDonnell-Pew Program in Cognitive Neuroscience 99-6 \#CNS-QUA.05 (to M. B.), NEI \#EY07980 (to R. B. H. T.), NIMH \#RO1 MH60941 (to D. L. S.), and NIH \#R01 RR13609 and Whitaker Foundation (to A. M. D.).",

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doi = "10.1016/S0896-6273(01)00224-0",

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AU - Bar, Moshe

AU - Tootell, Roger B.H.

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AU - Greve, Doug N.

AU - Fischl, Bruce

AU - Mendola, Janine D.

AU - Rosen, Bruce R.

AU - Dale, Anders M.

N1 - Funding Information: We thank I. Biederman for insightful comments; two anonymous reviewers for constructive advice; E. Halgren, F. Newell, A. Wagner, and C. West for helpful discussions; E. E. Cooper for providing some of the stimuli; and U. Viswanathan for assistance with the experiment. Supported by the McDonnell-Pew Program in Cognitive Neuroscience 99-6 #CNS-QUA.05 (to M. B.), NEI #EY07980 (to R. B. H. T.), NIMH #RO1 MH60941 (to D. L. S.), and NIH #R01 RR13609 and Whitaker Foundation (to A. M. D.).

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AB - The cortical mechanisms associated with conscious object recognition were studied using functional magnetic resonance imaging (fMRI). Participants were required to recognize pictures of masked objects that were presented very briefly, randomly and repeatedly. This design yielded a gradual accomplishment of successful recognition. Cortical activity in a ventrotemporal visual region was linearly correlated with perception of object identity. Therefore, although object recognition is rapid, awareness of an object's identity is not a discrete phenomenon but rather associated with gradually increasing cortical activity. Furthermore, the focus of the activity in the temporal cortex shifted anteriorly as subjects reported an increased knowledge regarding identity. The results presented here provide new insights into the processes underlying explicit object recognition, as well as the analysis that takes place immediately before and after recognition is possible.

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Cortical mechanisms specific to explicit visual object recognition

Abstract

Bibliographical note

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