Convergence of afferent impulses from individual semicircular canals on pontine reticular units

L. Petrosini, D. Troiani, E. Manni

Research output: Contribution to journalArticle


The effect of afferent impulses on single pontine RF units was recorded by means of tungsten microelectrodes in 22 curarized guinea pigs following thermic stimulation of individual semicircular canals. The labyrinthine stimulation consisted of short lasting circumscribed heating (45°C) of the canals through a silver thermode. Unitary response to labyrinthine stimulation was characterized by excitation and inhibition of rest discharge rate. Out of 86 units, 66 received bilateral labyrinthine influences responding in greatest number (20 units) to four semicircular canals. Only two units were unaffected. No significant difference in RF responses was noticed between concordant and antagonistic canals. Reticular formation units showed a great degree of facilitation of response and convergence of impulses from the single six semicircular canals.

Original languageEnglish
Pages (from-to)63-78
Number of pages16
JournalArchives Italiennes de Biologie
Issue number1
Publication statusPublished - 1975


ASJC Scopus subject areas

  • Medicine(all)

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