Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli

Autores
Kaunitz, Lisandro Nicolas; Kamienkowski, Juan Esteban; Olivetti, Emanuele; Murphy, Brian; Avesani, Paolo; Melcher, David Paul
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The operations and processes that the human brain employs to achieve fast visual categorization remain a matter of debate. A first issue concerns the timing and place of rapid visual categorization and to what extent it can be performed with an early feed-forward pass of information through the visual system. A second issue involves the categorization of stimuli that do not reach visual awareness. There is disagreement over the degree to which these stimuli activate the same early mechanisms as stimuli that are consciously perceived. We employed continuous flash suppression (CFS), EEG recordings, and machine learning techniques to study visual categorization of seen and unseen stimuli. Our classifiers were able to predict from the EEG recordings the category of stimuli on seen trials but not on unseen trials. Rapid categorization of conscious images could be detected around 100 ms on the occipital electrodes, consistent with a fast, feed-forward mechanism of target detection. For the invisible stimuli, however, CFS eliminated all traces of early processing. Our results support the idea of a fast mechanism of categorization and suggest that this early categorization process plays an important role in later, more subtle categorizations, and perceptual processes.
Fil: Kaunitz, Lisandro Nicolas. Università Degli Studi Di Trento; Italia
Fil: Kamienkowski, Juan Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Laboratorio de Neurociencia Integrativa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Olivetti, Emanuele. Università Degli Studi Di Trento; Italia
Fil: Murphy, Brian. Università Degli Studi Di Trento; Italia
Fil: Avesani, Paolo. Università Degli Studi Di Trento; Italia
Fil: Melcher, David Paul. Università Degli Studi Di Trento; Italia
Materia
CONTINUOUS FLASH SUPPRESSION
EEG
RAPID CATEGORIZATION
VISUAL AWARENESS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/68264
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Intercepting the first pass: Rapid categorization is suppressed for unseen stimuliKaunitz, Lisandro NicolasKamienkowski, Juan EstebanOlivetti, EmanueleMurphy, BrianAvesani, PaoloMelcher, David PaulCONTINUOUS FLASH SUPPRESSIONEEGRAPID CATEGORIZATIONVISUAL AWARENESShttps://purl.org/becyt/ford/1.2https://purl.org/becyt/ford/1The operations and processes that the human brain employs to achieve fast visual categorization remain a matter of debate. A first issue concerns the timing and place of rapid visual categorization and to what extent it can be performed with an early feed-forward pass of information through the visual system. A second issue involves the categorization of stimuli that do not reach visual awareness. There is disagreement over the degree to which these stimuli activate the same early mechanisms as stimuli that are consciously perceived. We employed continuous flash suppression (CFS), EEG recordings, and machine learning techniques to study visual categorization of seen and unseen stimuli. Our classifiers were able to predict from the EEG recordings the category of stimuli on seen trials but not on unseen trials. Rapid categorization of conscious images could be detected around 100 ms on the occipital electrodes, consistent with a fast, feed-forward mechanism of target detection. For the invisible stimuli, however, CFS eliminated all traces of early processing. Our results support the idea of a fast mechanism of categorization and suggest that this early categorization process plays an important role in later, more subtle categorizations, and perceptual processes.Fil: Kaunitz, Lisandro Nicolas. Università Degli Studi Di Trento; ItaliaFil: Kamienkowski, Juan Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Laboratorio de Neurociencia Integrativa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Olivetti, Emanuele. Università Degli Studi Di Trento; ItaliaFil: Murphy, Brian. Università Degli Studi Di Trento; ItaliaFil: Avesani, Paolo. Università Degli Studi Di Trento; ItaliaFil: Melcher, David Paul. Università Degli Studi Di Trento; ItaliaFrontiers Research Foundation2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68264Kaunitz, Lisandro Nicolas; Kamienkowski, Juan Esteban; Olivetti, Emanuele; Murphy, Brian; Avesani, Paolo; et al.; Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli; Frontiers Research Foundation; Frontiers in Psychology; 2; AUG; 8-2011; 1-10; 1981664-1078CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3389/fpsyg.2011.00198info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fpsyg.2011.00198/fullinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:47:21Zoai:ri.conicet.gov.ar:11336/68264instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:47:21.882CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
title Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
spellingShingle Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
Kaunitz, Lisandro Nicolas
CONTINUOUS FLASH SUPPRESSION
EEG
RAPID CATEGORIZATION
VISUAL AWARENESS
title_short Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
title_full Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
title_fullStr Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
title_full_unstemmed Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
title_sort Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli
dc.creator.none.fl_str_mv Kaunitz, Lisandro Nicolas
Kamienkowski, Juan Esteban
Olivetti, Emanuele
Murphy, Brian
Avesani, Paolo
Melcher, David Paul
author Kaunitz, Lisandro Nicolas
author_facet Kaunitz, Lisandro Nicolas
Kamienkowski, Juan Esteban
Olivetti, Emanuele
Murphy, Brian
Avesani, Paolo
Melcher, David Paul
author_role author
author2 Kamienkowski, Juan Esteban
Olivetti, Emanuele
Murphy, Brian
Avesani, Paolo
Melcher, David Paul
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CONTINUOUS FLASH SUPPRESSION
EEG
RAPID CATEGORIZATION
VISUAL AWARENESS
topic CONTINUOUS FLASH SUPPRESSION
EEG
RAPID CATEGORIZATION
VISUAL AWARENESS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.2
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The operations and processes that the human brain employs to achieve fast visual categorization remain a matter of debate. A first issue concerns the timing and place of rapid visual categorization and to what extent it can be performed with an early feed-forward pass of information through the visual system. A second issue involves the categorization of stimuli that do not reach visual awareness. There is disagreement over the degree to which these stimuli activate the same early mechanisms as stimuli that are consciously perceived. We employed continuous flash suppression (CFS), EEG recordings, and machine learning techniques to study visual categorization of seen and unseen stimuli. Our classifiers were able to predict from the EEG recordings the category of stimuli on seen trials but not on unseen trials. Rapid categorization of conscious images could be detected around 100 ms on the occipital electrodes, consistent with a fast, feed-forward mechanism of target detection. For the invisible stimuli, however, CFS eliminated all traces of early processing. Our results support the idea of a fast mechanism of categorization and suggest that this early categorization process plays an important role in later, more subtle categorizations, and perceptual processes.
Fil: Kaunitz, Lisandro Nicolas. Università Degli Studi Di Trento; Italia
Fil: Kamienkowski, Juan Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Laboratorio de Neurociencia Integrativa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Olivetti, Emanuele. Università Degli Studi Di Trento; Italia
Fil: Murphy, Brian. Università Degli Studi Di Trento; Italia
Fil: Avesani, Paolo. Università Degli Studi Di Trento; Italia
Fil: Melcher, David Paul. Università Degli Studi Di Trento; Italia
description The operations and processes that the human brain employs to achieve fast visual categorization remain a matter of debate. A first issue concerns the timing and place of rapid visual categorization and to what extent it can be performed with an early feed-forward pass of information through the visual system. A second issue involves the categorization of stimuli that do not reach visual awareness. There is disagreement over the degree to which these stimuli activate the same early mechanisms as stimuli that are consciously perceived. We employed continuous flash suppression (CFS), EEG recordings, and machine learning techniques to study visual categorization of seen and unseen stimuli. Our classifiers were able to predict from the EEG recordings the category of stimuli on seen trials but not on unseen trials. Rapid categorization of conscious images could be detected around 100 ms on the occipital electrodes, consistent with a fast, feed-forward mechanism of target detection. For the invisible stimuli, however, CFS eliminated all traces of early processing. Our results support the idea of a fast mechanism of categorization and suggest that this early categorization process plays an important role in later, more subtle categorizations, and perceptual processes.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/68264
Kaunitz, Lisandro Nicolas; Kamienkowski, Juan Esteban; Olivetti, Emanuele; Murphy, Brian; Avesani, Paolo; et al.; Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli; Frontiers Research Foundation; Frontiers in Psychology; 2; AUG; 8-2011; 1-10; 198
1664-1078
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68264
identifier_str_mv Kaunitz, Lisandro Nicolas; Kamienkowski, Juan Esteban; Olivetti, Emanuele; Murphy, Brian; Avesani, Paolo; et al.; Intercepting the first pass: Rapid categorization is suppressed for unseen stimuli; Frontiers Research Foundation; Frontiers in Psychology; 2; AUG; 8-2011; 1-10; 198
1664-1078
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3389/fpsyg.2011.00198
info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fpsyg.2011.00198/full
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Research Foundation
publisher.none.fl_str_mv Frontiers Research Foundation
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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