Sampling Time and Performance in Rat Whisker Sensory System
Identifieur interne : 000E64 ( Main/Merge ); précédent : 000E63; suivant : 000E65Sampling Time and Performance in Rat Whisker Sensory System
Auteurs : James S. Mcdonald [Australie] ; Mehdi Adibi [Australie] ; Colin W. G. Clifford [Australie] ; Ehsan Arabzadeh [Australie]Source :
- PLoS ONE [ 1932-6203 ] ; 2014.
Abstract
We designed a behavioural paradigm for vibro-tactile detection to characterise the sampling time and performance in the rat whisker sensory system. Rats initiated a trial by nose-poking into an aperture where their whiskers came into contact with two meshes. A continuous nose-poke for a random duration triggered stimulus presentation. Stimuli were a sequence of discrete Gaussian deflections of the mesh that increased in amplitude over time – across 5 conditions, time to maximum amplitude varied from 0.5 to 8 seconds. Rats indicated the detected stimulus by choosing between two reward spouts. Two rats completed more than 500 trials per condition. Rats' stimulus sampling duration increased and performance dropped with increasing task difficulty. For all conditions the median reaction time was longer for correct trials than incorrect trials. Higher rates of increment in stimulus amplitude resulted in faster rise in performance as a function of stimulus sampling duration. Rats' behaviour indicated a dynamic stimulus sampling whereby nose-poke was maintained until a stimulus was correctly identified or the rat experienced a false alarm. The perception was then manifested in behaviour after a motor delay. We thus modelled the results with 3 parameters: signal detection, false alarm, and motor delay. The model captured the main features of the data and produced parameter estimates that were biologically plausible and highly similar across the two rats.
Url:
DOI: 10.1371/journal.pone.0116357
PubMed: 25551373
PubMed Central: 4281132
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Mcdonald</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>School of Psychology, University of New South Wales, Sydney, NSW, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>School of Psychology, University of New South Wales, Sydney, NSW</wicri:regionArea><wicri:noRegion>NSW</wicri:noRegion></affiliation></author><author><name sortKey="Adibi, Mehdi" sort="Adibi, Mehdi" uniqKey="Adibi M" first="Mehdi" last="Adibi">Mehdi Adibi</name><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>Eccles Institute of Neuroscience, John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>Eccles Institute of Neuroscience, John Curtin School of Medical Research, The Australian National University, Canberra, ACT</wicri:regionArea><wicri:noRegion>ACT</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3"><addr-line>ARC Centre of Excellence for Integrative Brain Function, Australian National University Node, Canberra, ACT, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>ARC Centre of Excellence for Integrative Brain Function, Australian National University Node, Canberra, ACT</wicri:regionArea><wicri:noRegion>ACT</wicri:noRegion></affiliation></author><author><name sortKey="Clifford, Colin W G" sort="Clifford, Colin W G" uniqKey="Clifford C" first="Colin W. G." last="Clifford">Colin W. G. Clifford</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>School of Psychology, University of New South Wales, Sydney, NSW, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>School of Psychology, University of New South Wales, Sydney, NSW</wicri:regionArea><wicri:noRegion>NSW</wicri:noRegion></affiliation></author><author><name sortKey="Arabzadeh, Ehsan" sort="Arabzadeh, Ehsan" uniqKey="Arabzadeh E" first="Ehsan" last="Arabzadeh">Ehsan Arabzadeh</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>School of Psychology, University of New South Wales, Sydney, NSW, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>School of Psychology, University of New South Wales, Sydney, NSW</wicri:regionArea><wicri:noRegion>NSW</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>Eccles Institute of Neuroscience, John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>Eccles Institute of Neuroscience, John Curtin School of Medical Research, The Australian National University, Canberra, ACT</wicri:regionArea><wicri:noRegion>ACT</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3"><addr-line>ARC Centre of Excellence for Integrative Brain Function, Australian National University Node, Canberra, ACT, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>ARC Centre of Excellence for Integrative Brain Function, Australian National University Node, Canberra, ACT</wicri:regionArea><wicri:noRegion>ACT</wicri:noRegion></affiliation></author></analytic><series><title level="j">PLoS ONE</title><idno type="eISSN">1932-6203</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>We designed a behavioural paradigm for vibro-tactile detection to characterise the sampling time and performance in the rat whisker sensory system. Rats initiated a trial by nose-poking into an aperture where their whiskers came into contact with two meshes. A continuous nose-poke for a random duration triggered stimulus presentation. Stimuli were a sequence of discrete Gaussian deflections of the mesh that increased in amplitude over time – across 5 conditions, time to maximum amplitude varied from 0.5 to 8 seconds. Rats indicated the detected stimulus by choosing between two reward spouts. Two rats completed more than 500 trials per condition. Rats' stimulus sampling duration increased and performance dropped with increasing task difficulty. For all conditions the median reaction time was longer for correct trials than incorrect trials. Higher rates of increment in stimulus amplitude resulted in faster rise in performance as a function of stimulus sampling duration. Rats' behaviour indicated a dynamic stimulus sampling whereby nose-poke was maintained until a stimulus was correctly identified or the rat experienced a false alarm. The perception was then manifested in behaviour after a motor delay. We thus modelled the results with 3 parameters: signal detection, false alarm, and motor delay. The model captured the main features of the data and produced parameter estimates that were biologically plausible and highly similar across the two rats.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Roitman, Jd" uniqKey="Roitman J">JD Roitman</name></author><author><name sortKey="Shadlen, Mn" uniqKey="Shadlen M">MN Shadlen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Reinagel, P" uniqKey="Reinagel P">P Reinagel</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Uchida, N" uniqKey="Uchida N">N Uchida</name></author><author><name sortKey="Mainen, Zf" uniqKey="Mainen Z">ZF Mainen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Abraham, Nm" uniqKey="Abraham N">NM Abraham</name></author><author><name sortKey="Spors, H" uniqKey="Spors H">H Spors</name></author><author><name sortKey="Carleton, A" uniqKey="Carleton A">A 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Stanford</name></author><author><name sortKey="Shankar, S" uniqKey="Shankar S">S Shankar</name></author><author><name sortKey="Massoglia, Dp" uniqKey="Massoglia D">DP Massoglia</name></author><author><name sortKey="Costello, Mg" uniqKey="Costello M">MG Costello</name></author><author><name sortKey="Salinas, E" uniqKey="Salinas E">E Salinas</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Arabzadeh, E" uniqKey="Arabzadeh E">E Arabzadeh</name></author><author><name sortKey="Petersen, Rs" uniqKey="Petersen R">RS Petersen</name></author><author><name sortKey="Diamond, Me" uniqKey="Diamond M">ME Diamond</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Arabzadeh, E" uniqKey="Arabzadeh E">E Arabzadeh</name></author><author><name sortKey="Panzeri, S" uniqKey="Panzeri S">S Panzeri</name></author><author><name sortKey="Diamond, Me" uniqKey="Diamond M">ME Diamond</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Waiblinger, C" uniqKey="Waiblinger C">C Waiblinger</name></author><author><name sortKey="Brugger, D" uniqKey="Brugger D">D Brugger</name></author><author><name sortKey="Schwarz, C" uniqKey="Schwarz C">C Schwarz</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hutson, Ka" uniqKey="Hutson K">KA Hutson</name></author><author><name sortKey="Masterton, Rb" uniqKey="Masterton R">RB Masterton</name></author></analytic></biblStruct></listBibl></div1></back></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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