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Article: Unit responses to bidirectional off-vertical axes rotations in central vestibular and cerebellar fastigial nuclei

TitleUnit responses to bidirectional off-vertical axes rotations in central vestibular and cerebellar fastigial nuclei
Authors
Issue Date1988
PublisherElsevier BV. The Journal's web site is located at Http://www.sciencedirect.com
Citation
Progress In Brain Research, 1988, v. 76, p. 67-75 How to Cite?
AbstractExtracellular recordings were made from tilt-sensitive units in the vestibular nuclei and the cerebellar fastigial nucleus of cats during slow constant-velocity rotations in the CW and CCW directions about different off-vertical axes (5-25°). Each unit showed modulation of discharge rate, with position-dependent discharge maximum and minimum during any 360° unidirectional rotation. The location of the CW discharge maximum differed from that obtained during CCW rotation while the response gain was not affected by the direction of rotation. Characterized directional axes of neurons could be found along the roll and pitch axes. Units were classified into either phase-lead or phase-lag groups based on the location of CW discharge maximum relative to the CCW counterpart along the rotatory locus. About two-third of the units showed phase-lead responses, while the remaining units showed phase-lag responses. In such off-vertical axis rotations, increase in the amplitude of head tilt resulted in an increase in the discharge modulation but did not result in significant fluctuation in the positions of the CW or CCW discharge maxima. It is suggested that these directional signals on head position in space would provide a framework for spatial coding in otolithic motor commands.
Persistent Identifierhttp://hdl.handle.net/10722/171519
ISSN
2015 Impact Factor: 1.655
2015 SCImago Journal Rankings: 1.637
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChan, YSen_US
dc.contributor.authorCheung, YMen_US
dc.contributor.authorHwang, JCen_US
dc.date.accessioned2012-10-30T06:15:31Z-
dc.date.available2012-10-30T06:15:31Z-
dc.date.issued1988en_US
dc.identifier.citationProgress In Brain Research, 1988, v. 76, p. 67-75en_US
dc.identifier.issn0079-6123en_US
dc.identifier.urihttp://hdl.handle.net/10722/171519-
dc.description.abstractExtracellular recordings were made from tilt-sensitive units in the vestibular nuclei and the cerebellar fastigial nucleus of cats during slow constant-velocity rotations in the CW and CCW directions about different off-vertical axes (5-25°). Each unit showed modulation of discharge rate, with position-dependent discharge maximum and minimum during any 360° unidirectional rotation. The location of the CW discharge maximum differed from that obtained during CCW rotation while the response gain was not affected by the direction of rotation. Characterized directional axes of neurons could be found along the roll and pitch axes. Units were classified into either phase-lead or phase-lag groups based on the location of CW discharge maximum relative to the CCW counterpart along the rotatory locus. About two-third of the units showed phase-lead responses, while the remaining units showed phase-lag responses. In such off-vertical axis rotations, increase in the amplitude of head tilt resulted in an increase in the discharge modulation but did not result in significant fluctuation in the positions of the CW or CCW discharge maxima. It is suggested that these directional signals on head position in space would provide a framework for spatial coding in otolithic motor commands.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at Http://www.sciencedirect.comen_US
dc.relation.ispartofProgress in Brain Researchen_US
dc.subject.meshAction Potentialsen_US
dc.subject.meshAnimalsen_US
dc.subject.meshCatsen_US
dc.subject.meshCerebellar Nuclei - Physiologyen_US
dc.subject.meshRotationen_US
dc.subject.meshVestibular Nuclei - Physiologyen_US
dc.titleUnit responses to bidirectional off-vertical axes rotations in central vestibular and cerebellar fastigial nucleien_US
dc.typeArticleen_US
dc.identifier.emailChan, YS:yschan@hkucc.hku.hken_US
dc.identifier.authorityChan, YS=rp00318en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid3217530-
dc.identifier.scopuseid_2-s2.0-0023810943en_US
dc.identifier.volume76en_US
dc.identifier.spage67en_US
dc.identifier.epage75en_US
dc.identifier.isiWOS:A1988T952900005-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridChan, YS=7403676627en_US
dc.identifier.scopusauthoridCheung, YM=24521372000en_US
dc.identifier.scopusauthoridHwang, JC=7403897481en_US

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