Effects of lateral inhibition on fluctuations of the impulse rate

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Inhibition from neighboring eccentric cells has an effect on the variability of firing of a given eccentric cell. The reduction in the average impulse rate which is caused by inhibition decreases the variance of the impulse rate. However, this reduction of the average rate increases the coefficient of variation of the impulse rate. Inhibitory synaptic noise should add to the low frequency portion of the variance spectrum of the impulse rate. This occurs because of the slow time course of inhibitory synaptic potentials. As a consequence, inhibition decreases the signal-to-noise ratio for low frequency modulated stimuli.

Original languageEnglish (US)
Pages (from-to)557-575
Number of pages19
JournalJournal of General Physiology
Issue number5
StatePublished - May 1 1971

ASJC Scopus subject areas

  • Physiology


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