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Article: Spontaneous activity of otolith-related vestibular nuclear neurons in the decerebrate rat

TitleSpontaneous activity of otolith-related vestibular nuclear neurons in the decerebrate rat
Authors
Issue Date1996
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/brainres
Citation
Brain Research, 1996, v. 739 n. 1-2, p. 322-329 How to Cite?
AbstractThe discharge properties of lateral and descending vestibular neurons responsive to constant velocity off-vertical axis rotations (OVAR) in the clockwise (CW) and counterclockwise (CCW) directions, were studied at the stationary and earth-horizontal position of decerebrate adult rats. From the coefficient of variation (CV), the spontaneous activities of OVAR-responsive neurons were classified into regular and irregular patterns. Of the neurons (n = 36) that showed symmetric and stable bidirectional response sensitivity (δ defined as CW gain over CCW gain) to OVAR (10° tilt), some exhibited progressive phase shift with velocity (1.75-15°/s) while others exhibited stable response phase. Most neurons of the former group (93% or 12/13) showed regular discharge pattern while only 22% (n = 5/23) of the latter group showed such a pattern. Though the phase-stable neurons showed a significantly higher average CV than the phase-shifted neurons, there was no significant difference between the mean spontaneous firing rates of these neurons. The neurons (n = 17) that showed asymmetric and variable δ to OVAR velocity can also be grouped - those that exhibited a greater gain with rotations directed towards the side of recording (I neurons) showed irregular discharge pattern while those that exhibited a greater gain with rotations directed towards the side contralateral to recording (C neurons) showed regular discharge pattern. The I and C neurons also exhibited significant difference in mean firing rates. The relationship between the response characteristics of the OVAR-responsive neurons and their spontaneous activity at the stationary and earth-horizontal position is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/171634
ISSN
2015 Impact Factor: 2.561
2015 SCImago Journal Rankings: 1.351
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLai, CHen_US
dc.contributor.authorChan, YSen_US
dc.date.accessioned2012-10-30T06:16:04Z-
dc.date.available2012-10-30T06:16:04Z-
dc.date.issued1996en_US
dc.identifier.citationBrain Research, 1996, v. 739 n. 1-2, p. 322-329en_US
dc.identifier.issn0006-8993en_US
dc.identifier.urihttp://hdl.handle.net/10722/171634-
dc.description.abstractThe discharge properties of lateral and descending vestibular neurons responsive to constant velocity off-vertical axis rotations (OVAR) in the clockwise (CW) and counterclockwise (CCW) directions, were studied at the stationary and earth-horizontal position of decerebrate adult rats. From the coefficient of variation (CV), the spontaneous activities of OVAR-responsive neurons were classified into regular and irregular patterns. Of the neurons (n = 36) that showed symmetric and stable bidirectional response sensitivity (δ defined as CW gain over CCW gain) to OVAR (10° tilt), some exhibited progressive phase shift with velocity (1.75-15°/s) while others exhibited stable response phase. Most neurons of the former group (93% or 12/13) showed regular discharge pattern while only 22% (n = 5/23) of the latter group showed such a pattern. Though the phase-stable neurons showed a significantly higher average CV than the phase-shifted neurons, there was no significant difference between the mean spontaneous firing rates of these neurons. The neurons (n = 17) that showed asymmetric and variable δ to OVAR velocity can also be grouped - those that exhibited a greater gain with rotations directed towards the side of recording (I neurons) showed irregular discharge pattern while those that exhibited a greater gain with rotations directed towards the side contralateral to recording (C neurons) showed regular discharge pattern. The I and C neurons also exhibited significant difference in mean firing rates. The relationship between the response characteristics of the OVAR-responsive neurons and their spontaneous activity at the stationary and earth-horizontal position 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.subject.meshAction Potentials - Physiologyen_US
dc.subject.meshAnimalsen_US
dc.subject.meshDecerebrate Stateen_US
dc.subject.meshElectric Stimulationen_US
dc.subject.meshMembrane Potentials - Physiologyen_US
dc.subject.meshNeurons - Physiologyen_US
dc.subject.meshOtolithic Membrane - Physiologyen_US
dc.subject.meshRatsen_US
dc.subject.meshRats, Sprague-Dawleyen_US
dc.subject.meshRotationen_US
dc.subject.meshVestibular Nuclei - Cytology - Physiologyen_US
dc.titleSpontaneous activity of otolith-related vestibular nuclear neurons in the decerebrate 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/S0006-8993(96)00843-8en_US
dc.identifier.pmid8955954-
dc.identifier.scopuseid_2-s2.0-0030580423en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030580423&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume739en_US
dc.identifier.issue1-2en_US
dc.identifier.spage322en_US
dc.identifier.epage329en_US
dc.identifier.isiWOS:A1996VV25300037-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridLai, CH=7403086597en_US
dc.identifier.scopusauthoridChan, YS=7403676627en_US

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