Stimulus sensitivity and neuromodulatory properties of noisy intrinsic neuronal oscillators

Citation
Mt. Huber et al., Stimulus sensitivity and neuromodulatory properties of noisy intrinsic neuronal oscillators, BIOSYSTEMS, 48(1-3), 1998, pp. 95-104
Citations number
20
Categorie Soggetti
Experimental Biology
Journal title
BIOSYSTEMS
ISSN journal
03032647 → ACNP
Volume
48
Issue
1-3
Year of publication
1998
Pages
95 - 104
Database
ISI
SICI code
0303-2647(199809/12)48:1-3<95:SSANPO>2.0.ZU;2-7
Abstract
Intrinsic subthreshold oscillations in the membrane potential are a common property of many neurons in the peripheral and central nervous system. When such oscillations are combined with noise, interesting signal encoding and neuromodulatory properties are obtained which allow, for example, sensitiv ity adjustment or differential encoding of stimuli. Here we demonstrate tha t a noisy Hodgkin/Huxley-model for subthreshold oscillations, when tuned to maximum sensitivity, can be significantly modulated by even minor physiolo gical changes in the oscillation parameters amplitude or frequency. Given t he ubiquity of subthreshold oscillating neurons, it can be assumed that the se findings reflect principle encoding properties which are relevant for an understanding of sensitivity and neuromodulation in peripheral and central neurons. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.