Decision making during the psychological refractory period
In spite of its massively parallel architecture [1], the human brain is fundamentally limited if required to perform two tasks at the same time [2, 3]. This limitation can be studied with the psychological refractory period (PRP) paradigm, where two stimuli that requi...
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2012
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09609822_v22_n19_p1795_Zylberberg https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_09609822_v22_n19_p1795_Zylberberg_oai |
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I28-R145-paper_09609822_v22_n19_p1795_Zylberberg_oai2024-08-16 Zylberberg, A. Ouellette, B. Sigman, M. Roelfsema, P.R. 2012 In spite of its massively parallel architecture [1], the human brain is fundamentally limited if required to perform two tasks at the same time [2, 3]. This limitation can be studied with the psychological refractory period (PRP) paradigm, where two stimuli that require speeded responses occur in close succession [4]. Interference generally takes the form of a delay in the time to respond to the second stimulus [5]. Previous studies suggested that sensory decisions require the accumulation of sensory evidence [6, 7] and that the PRP reflects the inability to form more than one decision at a time [4, 8]. In the present study, we used a psychophysical reverse-correlation technique [9, 10] to measure the time-course of evidence accumulation during the PRP. We found that the accumulation of evidence could occur during the PRP albeit with a reduced efficiency, which implies that multiple decision processes can occur in parallel in the human brain. In addition to the reduced efficiency of evidence accumulation, our results uncover an additional delay in the routing of the decision to motor structures during the PRP, which implies that the process of sensory decision making is separable from the preparation of a motor response [11-13]. © 2012 Elsevier Ltd. All rights reserved. Fil:Sigman, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_09609822_v22_n19_p1795_Zylberberg info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Curr. Biol. 2012;22(19):1795-1799 article decision making hearing human human experiment physiology psychological refractory period Auditory Perception Decision Making Humans Nontherapeutic Human Experimentation Refractory Period, Psychological Decision making during the psychological refractory period info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_09609822_v22_n19_p1795_Zylberberg_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| topic |
article decision making hearing human human experiment physiology psychological refractory period Auditory Perception Decision Making Humans Nontherapeutic Human Experimentation Refractory Period, Psychological |
| spellingShingle |
article decision making hearing human human experiment physiology psychological refractory period Auditory Perception Decision Making Humans Nontherapeutic Human Experimentation Refractory Period, Psychological Zylberberg, A. Ouellette, B. Sigman, M. Roelfsema, P.R. Decision making during the psychological refractory period |
| topic_facet |
article decision making hearing human human experiment physiology psychological refractory period Auditory Perception Decision Making Humans Nontherapeutic Human Experimentation Refractory Period, Psychological |
| description |
In spite of its massively parallel architecture [1], the human brain is fundamentally limited if required to perform two tasks at the same time [2, 3]. This limitation can be studied with the psychological refractory period (PRP) paradigm, where two stimuli that require speeded responses occur in close succession [4]. Interference generally takes the form of a delay in the time to respond to the second stimulus [5]. Previous studies suggested that sensory decisions require the accumulation of sensory evidence [6, 7] and that the PRP reflects the inability to form more than one decision at a time [4, 8]. In the present study, we used a psychophysical reverse-correlation technique [9, 10] to measure the time-course of evidence accumulation during the PRP. We found that the accumulation of evidence could occur during the PRP albeit with a reduced efficiency, which implies that multiple decision processes can occur in parallel in the human brain. In addition to the reduced efficiency of evidence accumulation, our results uncover an additional delay in the routing of the decision to motor structures during the PRP, which implies that the process of sensory decision making is separable from the preparation of a motor response [11-13]. © 2012 Elsevier Ltd. All rights reserved. |
| format |
Artículo Artículo publishedVersion |
| author |
Zylberberg, A. Ouellette, B. Sigman, M. Roelfsema, P.R. |
| author_facet |
Zylberberg, A. Ouellette, B. Sigman, M. Roelfsema, P.R. |
| author_sort |
Zylberberg, A. |
| title |
Decision making during the psychological refractory period |
| title_short |
Decision making during the psychological refractory period |
| title_full |
Decision making during the psychological refractory period |
| title_fullStr |
Decision making during the psychological refractory period |
| title_full_unstemmed |
Decision making during the psychological refractory period |
| title_sort |
decision making during the psychological refractory period |
| publishDate |
2012 |
| url |
http://hdl.handle.net/20.500.12110/paper_09609822_v22_n19_p1795_Zylberberg https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_09609822_v22_n19_p1795_Zylberberg_oai |
| work_keys_str_mv |
AT zylberberga decisionmakingduringthepsychologicalrefractoryperiod AT ouelletteb decisionmakingduringthepsychologicalrefractoryperiod AT sigmanm decisionmakingduringthepsychologicalrefractoryperiod AT roelfsemapr decisionmakingduringthepsychologicalrefractoryperiod |
| _version_ |
1809356916186415104 |