Neuroanatomical and Neurochemical Substrates of Timing
Identifieur interne : 001824 ( Main/Exploration ); précédent : 001823; suivant : 001825Neuroanatomical and Neurochemical Substrates of Timing
Auteurs : Jennifer T. Coull [France] ; Ruey-Kuang Cheng [États-Unis] ; Warren H. Meck [États-Unis]Source :
- Neuropsychopharmacology : (New York, NY) [ 0893-133X ] ; 2011.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We all have a sense of time. Yet, there are no sensory receptors specifically dedicated for perceiving time. It is an almost uniquely intangible sensation: we cannot see time in the way that we see color, shape, or even location. So how is time represented in the brain? We explore the neural substrates of metrical representations of time such as duration estimation (explicit timing) or temporal expectation (implicit timing). Basal ganglia (BG), supplementary motor area, cerebellum, and prefrontal cortex have all been linked to the explicit estimation of duration. However, each region may have a functionally discrete role and will be differentially implicated depending upon task context. Among these, the dorsal striatum of the BG and, more specifically, its ascending nigrostriatal dopaminergic pathway seems to be the most crucial of these regions, as shown by converging functional neuroimaging, neuropsychological, and psychopharmacological investigations in humans, as well as lesion and pharmacological studies in animals. Moreover, neuronal firing rates in both striatal and interconnected frontal areas vary as a function of duration, suggesting a neurophysiological mechanism for the representation of time in the brain, with the excitatory-inhibitory balance of interactions among distinct subtypes of striatal neuron serving to fine-tune temporal accuracy and precision.
Affiliations:
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Coull</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire de Neurobiologie de la Cognition, Pole 3C, Université de Provence and CNRS</s1><s2>Marseille</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Provence-Alpes-Côte d'Azur</region><region type="old region">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Cheng, Ruey Kuang" sort="Cheng, Ruey Kuang" uniqKey="Cheng R" first="Ruey-Kuang" last="Cheng">Ruey-Kuang Cheng</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Department of Psychology and Neuroscience, Duke University</s1><s2>Durham, NC</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author><author><name sortKey="Meck, Warren H" sort="Meck, Warren H" uniqKey="Meck W" first="Warren H." last="Meck">Warren H. 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Coull</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire de Neurobiologie de la Cognition, Pole 3C, Université de Provence and CNRS</s1><s2>Marseille</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Provence-Alpes-Côte d'Azur</region><region type="old region">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Cheng, Ruey Kuang" sort="Cheng, Ruey Kuang" uniqKey="Cheng R" first="Ruey-Kuang" last="Cheng">Ruey-Kuang Cheng</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Department of Psychology and Neuroscience, Duke University</s1><s2>Durham, NC</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author><author><name sortKey="Meck, Warren H" sort="Meck, Warren H" uniqKey="Meck W" first="Warren H." last="Meck">Warren H. Meck</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Department of Psychology and Neuroscience, Duke University</s1><s2>Durham, NC</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Neuropsychopharmacology : (New York, NY)</title><title level="j" type="abbreviated">Neuropsychopharmacology : (N.Y.N.Y)</title><idno type="ISSN">0893-133X</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Neuropsychopharmacology : (New York, NY)</title><title level="j" type="abbreviated">Neuropsychopharmacology : (N.Y.N.Y)</title><idno type="ISSN">0893-133X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dopamine</term><term>Glutamate</term><term>Hazard</term><term>Parkinson disease</term><term>Prediction</term><term>Putamen</term><term>Timing</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Timing</term><term>Putamen</term><term>Dopamine</term><term>Glutamate</term><term>Maladie de Parkinson</term><term>Prédiction</term><term>Risque accidentel</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We all have a sense of time. Yet, there are no sensory receptors specifically dedicated for perceiving time. It is an almost uniquely intangible sensation: we cannot see time in the way that we see color, shape, or even location. So how is time represented in the brain? We explore the neural substrates of metrical representations of time such as duration estimation (explicit timing) or temporal expectation (implicit timing). Basal ganglia (BG), supplementary motor area, cerebellum, and prefrontal cortex have all been linked to the explicit estimation of duration. However, each region may have a functionally discrete role and will be differentially implicated depending upon task context. Among these, the dorsal striatum of the BG and, more specifically, its ascending nigrostriatal dopaminergic pathway seems to be the most crucial of these regions, as shown by converging functional neuroimaging, neuropsychological, and psychopharmacological investigations in humans, as well as lesion and pharmacological studies in animals. Moreover, neuronal firing rates in both striatal and interconnected frontal areas vary as a function of duration, suggesting a neurophysiological mechanism for the representation of time in the brain, with the excitatory-inhibitory balance of interactions among distinct subtypes of striatal neuron serving to fine-tune temporal accuracy and precision.</div></front></TEI><affiliations><list><country><li>France</li><li>États-Unis</li></country><region><li>Caroline du Nord</li><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Marseille</li></settlement></list><tree><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Coull, Jennifer T" sort="Coull, Jennifer T" uniqKey="Coull J" first="Jennifer T." last="Coull">Jennifer T. Coull</name></region></country><country name="États-Unis"><region name="Caroline du Nord"><name sortKey="Cheng, Ruey Kuang" sort="Cheng, Ruey Kuang" uniqKey="Cheng R" first="Ruey-Kuang" last="Cheng">Ruey-Kuang Cheng</name></region><name sortKey="Meck, Warren H" sort="Meck, Warren H" uniqKey="Meck W" first="Warren H." last="Meck">Warren H. Meck</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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