Premium
Cross‐Striolar and Commissural Inhibition in the Otolith System
Author(s) -
UCHINO Y.,
SATO H.,
KUSHIRO K.,
ZAKIR M.,
IMAGAWA M.,
OGAWA Y.,
KATSUTA M.,
ISU N.
Publication year - 1999
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1999.tb09182.x
Subject(s) - vestibular system , otolith , linear acceleration , commissure , inhibitory postsynaptic potential , anatomy , utricle , vestibular nerve , stimulation , neuroscience , biology , vestibulo–ocular reflex , electrophysiology , excitatory postsynaptic potential , physics , acceleration , fish <actinopterygii> , classical mechanics , fishery
A bstract : Neural connections from the saccular and utricular nerves to the ipsilateral vestibular neurons and the commissural effects were studied by using intracellular recordings of excitatory (E) and inhibitory (I) postsynaptic potentials (PSPs) in vestibular neurons of cats after focal stimulation of the saccular and the utricular maculae. Neural circuits from the maculae to vestibular neurons, termed crossstriolar inhibition, may provide a mechanism for increasing the sensitivity to linear acceleration and tilt of the head. It was examined whether secondary vestibular neurons activated by an ipsilateral otolith organ received a commissural inhibition from a contralateral otolith organ that occupied the same geometric plane. Results suggest that utricular‐activated vestibular neurons receiving commissural inhibition may provide a mechanism for increasing the sensitivity to horizontal linear acceleration and tilt of the head. The commissural inhibition of the saccular system was much weaker than that of the utricular system.