Selective effects of low-dose dopamine D1 and D2 receptor antagonists on rat information processing.
Identifieur interne : 001014 ( PubMed/Curation ); précédent : 001013; suivant : 001015Selective effects of low-dose dopamine D1 and D2 receptor antagonists on rat information processing.
Auteurs : A. Courtière [France] ; J. Hardouin ; A. Goujon ; F. Vidal ; T. HasbroucqSource :
- Behavioural pharmacology [ 0955-8810 ] ; 2003.
English descriptors
- KwdEn :
- Animals, Antipsychotic Agents (pharmacology), Benzazepines (pharmacology), Cognition (drug effects), Discrimination Learning (drug effects), Dopamine Antagonists (pharmacology), Parkinson Disease (physiopathology), Rats, Rats, Long-Evans, Reaction Time, Receptors, Dopamine D1 (drug effects), Receptors, Dopamine D1 (physiology), Receptors, Dopamine D2 (drug effects), Receptors, Dopamine D2 (physiology), Salicylamides (pharmacology).
- MESH :
- chemical , drug effects : Receptors, Dopamine D1, Receptors, Dopamine D2.
- chemical , pharmacology : Antipsychotic Agents, Benzazepines, Dopamine Antagonists, Salicylamides.
- drug effects : Cognition, Discrimination Learning.
- chemical , physiology : Receptors, Dopamine D1, Receptors, Dopamine D2.
- physiopathology : Parkinson Disease.
- Animals, Rats, Rats, Long-Evans, Reaction Time.
Abstract
It is well established that the dopaminergic system influences simple reaction time (RT) performance. However, the role of this system in more complex information processing remains to be clarified. The present study was aimed at addressing this issue. To this end, we used an inferential method that relies on choice RT procedures and allows one to identify information processing stages in both humans and rats. Long-Evans rats responded to lateral visual cues (left or right). Two task factors, signal intensity and foreperiod duration, were manipulated. Low doses of two pharmacological agents, SCH 23390 (a D1 receptor antagonist; 0.015 and 0.025 micromol/kg) and eticlopride (a D2 receptor antagonist; 0.01 and 0.02 micromol/kg), were administrated systemically. Both drugs increased choice RT: eticlopride interacted with signal intensity on RT, showing that D2 receptors mediate at least the sensory stage of stimulus preprocessing. In addition, eticlopride interacted with signal intensity on omission rate, thereby suggesting an involvement of D2 receptors in attentional processes; and SCH 23390 interacted with foreperiod duration on RT, indicating that D1 receptors specifically mediate the response adjustment stage. The effect of this drug on RT rests entirely in its interaction with foreperiod duration, allowing us to conclude that this D1 antagonist affects the response adjustment stage while sparing all other processing stages.
DOI: 10.1097/01.fbp.0000104030.08123.de
PubMed: 14665976
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Vidal</name></author><author><name sortKey="Hasbroucq, T" sort="Hasbroucq, T" uniqKey="Hasbroucq T" first="T" last="Hasbroucq">T. Hasbroucq</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2003">2003</date><idno type="RBID">pubmed:14665976</idno><idno type="pmid">14665976</idno><idno type="doi">10.1097/01.fbp.0000104030.08123.de</idno><idno type="wicri:Area/PubMed/Corpus">001055</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">001055</idno><idno type="wicri:Area/PubMed/Curation">001014</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">001014</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Selective effects of low-dose dopamine D1 and D2 receptor antagonists on rat information processing.</title><author><name sortKey="Courtiere, A" sort="Courtiere, A" uniqKey="Courtiere A" first="A" last="Courtière">A. 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However, the role of this system in more complex information processing remains to be clarified. The present study was aimed at addressing this issue. To this end, we used an inferential method that relies on choice RT procedures and allows one to identify information processing stages in both humans and rats. Long-Evans rats responded to lateral visual cues (left or right). Two task factors, signal intensity and foreperiod duration, were manipulated. Low doses of two pharmacological agents, SCH 23390 (a D1 receptor antagonist; 0.015 and 0.025 micromol/kg) and eticlopride (a D2 receptor antagonist; 0.01 and 0.02 micromol/kg), were administrated systemically. Both drugs increased choice RT: eticlopride interacted with signal intensity on RT, showing that D2 receptors mediate at least the sensory stage of stimulus preprocessing. In addition, eticlopride interacted with signal intensity on omission rate, thereby suggesting an involvement of D2 receptors in attentional processes; and SCH 23390 interacted with foreperiod duration on RT, indicating that D1 receptors specifically mediate the response adjustment stage. The effect of this drug on RT rests entirely in its interaction with foreperiod duration, allowing us to conclude that this D1 antagonist affects the response adjustment stage while sparing all other processing stages.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">14665976</PMID><DateCreated><Year>2003</Year><Month>12</Month><Day>10</Day></DateCreated><DateCompleted><Year>2004</Year><Month>05</Month><Day>19</Day></DateCompleted><DateRevised><Year>2012</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0955-8810</ISSN><JournalIssue CitedMedium="Print"><Volume>14</Volume><Issue>8</Issue><PubDate><Year>2003</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Behavioural pharmacology</Title><ISOAbbreviation>Behav Pharmacol</ISOAbbreviation></Journal><ArticleTitle>Selective effects of low-dose dopamine D1 and D2 receptor antagonists on rat information processing.</ArticleTitle><Pagination><MedlinePgn>589-98</MedlinePgn></Pagination><Abstract><AbstractText>It is well established that the dopaminergic system influences simple reaction time (RT) performance. However, the role of this system in more complex information processing remains to be clarified. The present study was aimed at addressing this issue. To this end, we used an inferential method that relies on choice RT procedures and allows one to identify information processing stages in both humans and rats. Long-Evans rats responded to lateral visual cues (left or right). Two task factors, signal intensity and foreperiod duration, were manipulated. Low doses of two pharmacological agents, SCH 23390 (a D1 receptor antagonist; 0.015 and 0.025 micromol/kg) and eticlopride (a D2 receptor antagonist; 0.01 and 0.02 micromol/kg), were administrated systemically. Both drugs increased choice RT: eticlopride interacted with signal intensity on RT, showing that D2 receptors mediate at least the sensory stage of stimulus preprocessing. 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