PMID: 6536901Oct 1, 1984Paper

Floccular influence on excitatory relay neurones of vestibular reflexes of anterior semicircular canal origin in the cat

Neuroscience Research
N Hirai, Y Uchino

Abstract

Floccular influence on excitatory vestibular reflex arcs of anterior semicircular canal origin was examined in the anaesthetized cat. Stimulation of the anterior semicircular canal nerve (ACN) evoked disynaptic excitatory postsynaptic potentials (EPSPs) in all sampled inferior oblique (IO), superior rectus (SR), and biventor cervicis (BIV) muscle motoneurones of the contralateral side. Conditioning stimulus to the flocculus depressed the amplitude of the EPSPs in both IO and SR motoneurones by 50% on the average but not in any BIV motoneurones. The excitatory vestibulo-ocular neurones identified by orthodromic and antidromic responses to stimulation of the ACN and the contralateral IO motoneurone pool, respectively, were classified as VOC (vestibulo-ocular neurones with axons descending to the cervical segment) or VO (vestibulo-ocular proper) neurones on the basis of whether or not they responded antidromically to stimulation of the spinal cord in the C1 segment. All of the VO neurones in the superior vestibular nucleus (n = 19) were inhibited from the flocculus while the activities of three-fourths of the VO neurones (36/48) in the other vestibular nuclei were not suppressed by floccular stimulation. In contrast, none of VOC n...Continue Reading

References

Jan 1, 1975·Experimental Brain Research·Y Shinoda, K Yoshida
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Dec 20, 1973·Experimental Brain Research·T AkaikeH Nakajima
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Jan 1, 1980·Experimental Brain Research·Y UchinoS Watanabe

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Citations

Mar 8, 2000·Experimental Brain Research·J M Goldberg
Jun 1, 1995·Neuroscience Research·K Fukushima, C R Kaneko
May 22, 1992·Annals of the New York Academy of Sciences·J A Büttner-Ennever
May 6, 2005·Brain : a Journal of Neurology·C Pierrot-Deseilligny, D Milea
Oct 1, 1990·Journal of Neurobiology·W Graf, R Baker
Sep 12, 2006·Neuroscience and Behavioral Physiology·S G SarkisyanM L Egiazaryan

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