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Response properties of neurons in the inferior colliculus of the guinea-pig.

Popelar, J. and Syka, J. and Dobrzanska, J. and Pacut, A. and Tych, W. (1982) Response properties of neurons in the inferior colliculus of the guinea-pig. Acta Neurobiologiae Experimentalis, 42 (4-5). pp. 299-310. ISSN 0065-1400

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Abstract

Single unit responses to tone pips (200 ms duration) or clicks were studied in the inferior colliculus of anaesthetized guinea-pigs. In all, 360 neurons were investigated. The tonotopic organization of neurons in the inferior colliculus and shapes of the threshold tuning curves were comparable with the data known in other laboratory animals. The majority of neurons (83.5 percent) displayed a tonic response to tonal stimuli, the remaining 16.5 percent of units responded with a typical "on" reaction at the beginning of the stimulus. The spike-intensity functions of 50 percent of neurons were of the non-monotonic type, the saturation of response was observed usually at 20-30 dB above the threshold. Monaural stimulation of the contralateral ear evoked an excitatory response in all cases; ipsilateral ear stimulation exerted an excitatory response in 61.8 percent of neurons, an inhibitory response in 17.6 percent of neurons and for 20.6 percent of units ipsilateral ear stimulation was uneffective. The occurrence of neuronal responses to stimuli with an interaural time delay or intensity differences was also investigated.

Item Type: Article
Journal or Publication Title: Acta Neurobiologiae Experimentalis
Uncontrolled Keywords: single unit responses ; inferior colliculus ; guinea-pig
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 40742
Deposited By: Mr Richard Ingham
Deposited On: 28 Apr 2011 15:32
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:04
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/40742

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