Sensory integration across space and in time for decision making in the somatosensory system of rodents
Identifieur interne : 000A53 ( Ncbi/Checkpoint ); précédent : 000A52; suivant : 000A54Sensory integration across space and in time for decision making in the somatosensory system of rodents
Auteurs : Tansu Celikel [Allemagne] ; Bert Sakmann [Allemagne]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2007.
Abstract
Environment is represented in the brain by a neural code that is a result of the spatiotemporal pattern of incoming sensory information. Sensory neurons encode inputs across space and in time such that activity of a given cell inhibits the ability of near-simultaneously arriving sensory stimuli to excite the cell. At the behavioral level, consequences of such suppression are unknown. We investigated the contribution of spatially distributed, near-simultaneous sensory inputs to decision making in a whisker-dependent learning task. Mice learned the task with a single whisker or multiple whiskers alike. Both groups of mice had similar learning curves and final success rates. However, multiple-whisker animals had faster response times than single-whisker mice, requiring only about half the time to perform the task successfully. The results show that spatially distributed sensory inputs in a highly redundant sensory environment improve speed but not accuracy of the decisions made during simple sensory detection. Suppression of the near-simultaneous sensory inputs could, therefore, act to reduce the sensory redundancy.
Url:
DOI: 10.1073/pnas.0610267104
PubMed: 17227858
PubMed Central: 1783091
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Sensory integration across space and in time for decision making in the somatosensory system of rodents</title><author><name sortKey="Celikel, Tansu" sort="Celikel, Tansu" uniqKey="Celikel T" first="Tansu" last="Celikel">Tansu Celikel</name><affiliation wicri:level="3"><nlm:aff id="aff1">Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany</nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg</wicri:regionArea><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Heidelberg</settlement></placeName></affiliation></author><author><name sortKey="Sakmann, Bert" sort="Sakmann, Bert" uniqKey="Sakmann B" first="Bert" last="Sakmann">Bert Sakmann</name><affiliation wicri:level="3"><nlm:aff id="aff1">Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany</nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg</wicri:regionArea><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Heidelberg</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">17227858</idno><idno type="pmc">1783091</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1783091</idno><idno type="RBID">PMC:1783091</idno><idno type="doi">10.1073/pnas.0610267104</idno><date when="2007">2007</date><idno type="wicri:Area/Pmc/Corpus">001562</idno><idno type="wicri:Area/Pmc/Curation">001562</idno><idno type="wicri:Area/Pmc/Checkpoint">002423</idno><idno type="wicri:Area/Ncbi/Merge">000A53</idno><idno type="wicri:Area/Ncbi/Curation">000A53</idno><idno type="wicri:Area/Ncbi/Checkpoint">000A53</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Sensory integration across space and in time for decision making in the somatosensory system of rodents</title><author><name sortKey="Celikel, Tansu" sort="Celikel, Tansu" uniqKey="Celikel T" first="Tansu" last="Celikel">Tansu Celikel</name><affiliation wicri:level="3"><nlm:aff id="aff1">Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany</nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg</wicri:regionArea><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Heidelberg</settlement></placeName></affiliation></author><author><name sortKey="Sakmann, Bert" sort="Sakmann, Bert" uniqKey="Sakmann B" first="Bert" last="Sakmann">Bert Sakmann</name><affiliation wicri:level="3"><nlm:aff id="aff1">Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany</nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg</wicri:regionArea><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Heidelberg</settlement></placeName></affiliation></author></analytic><series><title level="j">Proceedings of the National Academy of Sciences of the United States of America</title><idno type="ISSN">0027-8424</idno><idno type="eISSN">1091-6490</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Environment is represented in the brain by a neural code that is a result of the spatiotemporal pattern of incoming sensory information. Sensory neurons encode inputs across space and in time such that activity of a given cell inhibits the ability of near-simultaneously arriving sensory stimuli to excite the cell. At the behavioral level, consequences of such suppression are unknown. We investigated the contribution of spatially distributed, near-simultaneous sensory inputs to decision making in a whisker-dependent learning task. Mice learned the task with a single whisker or multiple whiskers alike. Both groups of mice had similar learning curves and final success rates. However, multiple-whisker animals had faster response times than single-whisker mice, requiring only about half the time to perform the task successfully. The results show that spatially distributed sensory inputs in a highly redundant sensory environment improve speed but not accuracy of the decisions made during simple sensory detection. Suppression of the near-simultaneous sensory inputs could, therefore, act to reduce the sensory redundancy.</p></div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>Bade-Wurtemberg</li><li>District de Karlsruhe</li></region><settlement><li>Heidelberg</li></settlement></list><tree><country name="Allemagne"><region name="Bade-Wurtemberg"><name sortKey="Celikel, Tansu" sort="Celikel, Tansu" uniqKey="Celikel T" first="Tansu" last="Celikel">Tansu Celikel</name></region><name sortKey="Sakmann, Bert" sort="Sakmann, Bert" uniqKey="Sakmann B" first="Bert" last="Sakmann">Bert Sakmann</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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