The reach-to-grasp-food task for rats: A rare case of modularity in animal behavior?
Identifieur interne : 001960 ( Pmc/Curation ); précédent : 001959; suivant : 001961The reach-to-grasp-food task for rats: A rare case of modularity in animal behavior?
Auteurs : Linda Hermer-Vazquez ; Raymond Hermer-Vazquez ; John K. ChapinSource :
- Behavioural brain research [ 0166-4328 ] ; 2007.
Abstract
Humans and nonhuman animals make use of sensory hierarchies in “selecting” strategies for solving many cognitive and behavioral tasks. Often, if a preferred type of sensory information is unavailable or is not useful for solving a given task, the animal can switch to a lower-priority strategy, making use of a different class of sensory information. In the case of rats performing a classic reach-to-grasp-food task, however, prior studies indicate that the reaching maneuver may be a fixed action pattern that is guided exclusively by the food’s odor plume until the point of contact with the food morsel [
Url:
DOI: 10.1016/j.bbr.2006.11.029
PubMed: 17207541
PubMed Central: 1885543
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<author><name sortKey="Hermer Vazquez, Linda" sort="Hermer Vazquez, Linda" uniqKey="Hermer Vazquez L" first="Linda" last="Hermer-Vazquez">Linda Hermer-Vazquez</name>
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<author><name sortKey="Hermer Vazquez, Raymond" sort="Hermer Vazquez, Raymond" uniqKey="Hermer Vazquez R" first="Raymond" last="Hermer-Vazquez">Raymond Hermer-Vazquez</name>
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<author><name sortKey="Hermer Vazquez, Linda" sort="Hermer Vazquez, Linda" uniqKey="Hermer Vazquez L" first="Linda" last="Hermer-Vazquez">Linda Hermer-Vazquez</name>
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<author><name sortKey="Hermer Vazquez, Raymond" sort="Hermer Vazquez, Raymond" uniqKey="Hermer Vazquez R" first="Raymond" last="Hermer-Vazquez">Raymond Hermer-Vazquez</name>
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<series><title level="j">Behavioural brain research</title>
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<imprint><date when="2007">2007</date>
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<front><div type="abstract" xml:lang="en"><p id="P2">Humans and nonhuman animals make use of sensory hierarchies in “selecting” strategies for solving many cognitive and behavioral tasks. Often, if a preferred type of sensory information is unavailable or is not useful for solving a given task, the animal can switch to a lower-priority strategy, making use of a different class of sensory information. In the case of rats performing a classic reach-to-grasp-food task, however, prior studies indicate that the reaching maneuver may be a fixed action pattern that is guided exclusively by the food’s odor plume until the point of contact with the food morsel [<xref rid="R1" ref-type="bibr">1</xref>
–<xref rid="R3" ref-type="bibr">3</xref>
]. We sought to confirm and extend these findings in several ways. In Experiment 1, using a GO/NO-GO variant of the classic task, we demonstrated that rats used the GO target’s odor both to trigger and guide their reaches. In Experiment 2, we showed that rats deprived of (a) vision, (b) object-recognizing rostral whiskers and forearm sinus hairs, or (c) both, displayed no deficits in triggering and guiding their reaches. Finally, in a third experiment in which the GO target’s location varied randomly across trials and only olfactory cues were available, we demonstrated that rats could determine the spatial endpoint of their reach without any loss of accuracy. Combined with results from a prior study in which bulbectomized rats never developed a new, successful reaching strategy despite extensive post-operative training [<xref rid="R1" ref-type="bibr">1</xref>
], these results indicate that rats do not have a sensory hierarchy for solving the reach-to-grasp-food task, but rather, are guided by olfaction alone until their paw contacts the food morsel.</p>
</div>
</front>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
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<front><journal-meta><journal-id journal-id-type="nlm-journal-id">8004872</journal-id>
<journal-id journal-id-type="pubmed-jr-id">1436</journal-id>
<journal-id journal-id-type="nlm-ta">Behav Brain Res</journal-id>
<journal-title>Behavioural brain research</journal-title>
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<article-id pub-id-type="manuscript">NIHMS18005</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
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<title-group><article-title>The reach-to-grasp-food task for rats: A rare case of modularity in animal behavior?</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Hermer-Vazquez</surname>
<given-names>Linda</given-names>
</name>
<xref rid="FN1" ref-type="author-notes">*</xref>
<xref rid="FN2" ref-type="author-notes">†</xref>
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<contrib contrib-type="author"><name><surname>Hermer-Vazquez</surname>
<given-names>Raymond</given-names>
</name>
<xref rid="FN2" ref-type="author-notes">†</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Chapin</surname>
<given-names>John K.</given-names>
</name>
</contrib>
<aff id="A1">SUNY Health Science Center, Brooklyn, NY 11203</aff>
</contrib-group>
<author-notes><corresp id="FN1">*Corresponding author: Linda Hermer-Vazquez, Box 112250, University of Florida, Gainesville, FL 32611. Email: <email>lindahv@ufl.edu</email>
. Phone: (352)392-0601, x335. Fax: (352)392-7985.</corresp>
<fn id="FN2" fn-type="present-address"><label>†</label>
<p>Current address: Behavioral Neuroscience Program, Department of Psychology, University of Florida, Gainesville, FL 32611</p>
</fn>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>29</day>
<month>3</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub"><day>4</day>
<month>1</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="ppub"><day>27</day>
<month>2</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>4</day>
<month>6</month>
<year>2007</year>
</pub-date>
<volume>177</volume>
<issue>2</issue>
<fpage>322</fpage>
<lpage>328</lpage>
<abstract><p id="P2">Humans and nonhuman animals make use of sensory hierarchies in “selecting” strategies for solving many cognitive and behavioral tasks. Often, if a preferred type of sensory information is unavailable or is not useful for solving a given task, the animal can switch to a lower-priority strategy, making use of a different class of sensory information. In the case of rats performing a classic reach-to-grasp-food task, however, prior studies indicate that the reaching maneuver may be a fixed action pattern that is guided exclusively by the food’s odor plume until the point of contact with the food morsel [<xref rid="R1" ref-type="bibr">1</xref>
–<xref rid="R3" ref-type="bibr">3</xref>
]. We sought to confirm and extend these findings in several ways. In Experiment 1, using a GO/NO-GO variant of the classic task, we demonstrated that rats used the GO target’s odor both to trigger and guide their reaches. In Experiment 2, we showed that rats deprived of (a) vision, (b) object-recognizing rostral whiskers and forearm sinus hairs, or (c) both, displayed no deficits in triggering and guiding their reaches. Finally, in a third experiment in which the GO target’s location varied randomly across trials and only olfactory cues were available, we demonstrated that rats could determine the spatial endpoint of their reach without any loss of accuracy. Combined with results from a prior study in which bulbectomized rats never developed a new, successful reaching strategy despite extensive post-operative training [<xref rid="R1" ref-type="bibr">1</xref>
], these results indicate that rats do not have a sensory hierarchy for solving the reach-to-grasp-food task, but rather, are guided by olfaction alone until their paw contacts the food morsel.</p>
</abstract>
<kwd-group><kwd>rats</kwd>
<kwd>food handling</kwd>
<kwd>olfaction</kwd>
<kwd>vibrissae</kwd>
<kwd>vision</kwd>
<kwd>modularity</kwd>
<kwd>evolution</kwd>
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</front>
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