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Article: Properties of otolith-related vestibular nuclear neurons in response to bidirectional off-vertical axis rotation of the rat

TitleProperties of otolith-related vestibular nuclear neurons in response to bidirectional off-vertical axis rotation of the rat
Authors
Issue Date1995
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/brainres
Citation
Brain Research, 1995, v. 693 n. 1-2, p. 39-50 How to Cite?
AbstractIn decerebrate rats, the responses of tilt-sensitive neurons in the lateral and descending vestibular nuclei were studied during constant velocity 10° off-vertical axis rotations (OVAR) in the clockwise (CW) and counterclockwise (CCW) directions. Seventy three otolith-related units showed sinusoidal position-dependent discharge modulation to OVAR of both directions; 20 of these showed clipped firing rates in parts of a 360° OVAR cycle. With increase in the velocity of rotation (1.75-15°/s), one group of units (n = 36) showed a stable ratio of bidirectional response sensitivity and symmetric response magnitudes to CW and CCW rotations. These units showed gain tuning ratios similar to those of narrowly spatiotemporal-tuned neurons. The other group of OVAR responsive units (n = 13) exhibited velocity-variable and asymmetric bidirectional response sensitivities. Their gain tuning ratios were similar to those of broadly spatiotemporal-tuned neurons. For units with velocity-stable and symmetric bidirectional response sensitivity as well as gain tuning ratio of the narrowly spatiotemporal-tuned neurons, their response gains remained stable with velocity. Some showed stable response phase lead or lag with velocity increase while others showed progressive shifts from response lead of 13° to response lag of 25°. The best response orientations of these units with velocity-stable and symmetric bidirectional response sensitivity were found to point in all directions on the plane of rotation. The functional significance of these tilt- and OVAR-sensitive central otolith neurons is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/171622
ISSN
2015 Impact Factor: 2.561
2015 SCImago Journal Rankings: 1.351
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLai, CHen_US
dc.contributor.authorChan, YSen_US
dc.date.accessioned2012-10-30T06:16:01Z-
dc.date.available2012-10-30T06:16:01Z-
dc.date.issued1995en_US
dc.identifier.citationBrain Research, 1995, v. 693 n. 1-2, p. 39-50en_US
dc.identifier.issn0006-8993en_US
dc.identifier.urihttp://hdl.handle.net/10722/171622-
dc.description.abstractIn decerebrate rats, the responses of tilt-sensitive neurons in the lateral and descending vestibular nuclei were studied during constant velocity 10° off-vertical axis rotations (OVAR) in the clockwise (CW) and counterclockwise (CCW) directions. Seventy three otolith-related units showed sinusoidal position-dependent discharge modulation to OVAR of both directions; 20 of these showed clipped firing rates in parts of a 360° OVAR cycle. With increase in the velocity of rotation (1.75-15°/s), one group of units (n = 36) showed a stable ratio of bidirectional response sensitivity and symmetric response magnitudes to CW and CCW rotations. These units showed gain tuning ratios similar to those of narrowly spatiotemporal-tuned neurons. The other group of OVAR responsive units (n = 13) exhibited velocity-variable and asymmetric bidirectional response sensitivities. Their gain tuning ratios were similar to those of broadly spatiotemporal-tuned neurons. For units with velocity-stable and symmetric bidirectional response sensitivity as well as gain tuning ratio of the narrowly spatiotemporal-tuned neurons, their response gains remained stable with velocity. Some showed stable response phase lead or lag with velocity increase while others showed progressive shifts from response lead of 13° to response lag of 25°. The best response orientations of these units with velocity-stable and symmetric bidirectional response sensitivity were found to point in all directions on the plane of rotation. The functional significance of these tilt- and OVAR-sensitive central otolith neurons is discussed.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/brainresen_US
dc.relation.ispartofBrain Researchen_US
dc.rightsBrain Research. Copyright © Elsevier BV.-
dc.subject.meshAnimalsen_US
dc.subject.meshElectrophysiologyen_US
dc.subject.meshNeurons - Physiologyen_US
dc.subject.meshOtolithic Membrane - Cytology - Innervation - Physiologyen_US
dc.subject.meshRatsen_US
dc.subject.meshRats, Sprague-Dawleyen_US
dc.subject.meshRotationen_US
dc.subject.meshSensitivity And Specificityen_US
dc.subject.meshVestibular Nuclei - Cytology - Physiologyen_US
dc.titleProperties of otolith-related vestibular nuclear neurons in response to bidirectional off-vertical axis rotation of the raten_US
dc.typeArticleen_US
dc.identifier.emailLai, CH:chlaib@hku.hken_US
dc.identifier.emailChan, YS:yschan@hkucc.hku.hken_US
dc.identifier.authorityLai, CH=rp00396en_US
dc.identifier.authorityChan, YS=rp00318en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/0006-8993(95)00687-Len_US
dc.identifier.pmid8653420-
dc.identifier.scopuseid_2-s2.0-0029116923en_US
dc.identifier.hkuros12830-
dc.identifier.volume693en_US
dc.identifier.issue1-2en_US
dc.identifier.spage39en_US
dc.identifier.epage50en_US
dc.identifier.isiWOS:A1995RX13300005-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridLai, CH=7403086597en_US
dc.identifier.scopusauthoridChan, YS=7403676627en_US

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