More is not always better: adaptive gain control explains dissociation between perception and action
| Autor: | Pascal Mamassian, Claudio Simoncini, Laurent Perrinet, Anna Montagnini, Guillaume S. Masson |
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| Přispěvatelé: | Institut de Neurosciences de la Timone (INT), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Institut de neurosciences cognitives de la méditerranée - UMR 6193 (INCM), Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS), Laboratoire des systèmes perceptifs (LSP), Département d'Etudes Cognitives - ENS Paris (DEC), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Male
Dissociation (neuropsychology) Time Factors Eye Movements Psychometrics Computer science media_common.quotation_subject Pooling Motion Perception Models Biological Contrast Sensitivity 03 medical and health sciences [SCCO]Cognitive science 0302 clinical medicine Discrimination Psychological Perception Psychophysics Reaction Time Automatic gain control Humans ComputingMilieux_MISCELLANEOUS 030304 developmental biology media_common 0303 health sciences Communication business.industry General Neuroscience [SCCO.NEUR]Cognitive science/Neuroscience Adaptation Physiological [SCCO.PSYC]Cognitive science/Psychology Female Artificial intelligence business Neuroscience 030217 neurology & neurosurgery Photic Stimulation |
| Zdroj: | Nature Neuroscience Nature Neuroscience, 2012, 15 (11), pp.1596-1603. ⟨10.1038/nn.3229⟩ Nature Neuroscience, Nature Publishing Group, 2012, 15 (11), pp.1596-1603. ⟨10.1038/nn.3229⟩ |
| ISSN: | 1097-6256 1546-1726 |
| DOI: | 10.1038/nn.3229⟩ |
| Popis: | Moving objects generate motion information at different scales, which are processed in the visual system with a bank of spatiotemporal frequency channels. It is not known how the brain pools this information to reconstruct object speed and whether this pooling is generic or adaptive; that is, dependent on the behavioral task. We used rich textured motion stimuli of varying bandwidths to decipher how the human visual motion system computes object speed in different behavioral contexts. We found that, although a simple visuomotor behavior such as short-latency ocular following responses takes advantage of the full distribution of motion signals, perceptual speed discrimination is impaired for stimuli with large bandwidths. Such opposite dependencies can be explained by an adaptive gain control mechanism in which the divisive normalization pool is adjusted to meet the different constraints of perception and action. |
| Databáze: | OpenAIRE |
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