Sensory adaptation

Barry Wark, Brian Nils Lundstrom, Adrienne Fairhall

Research output: Contribution to journalReview articlepeer-review

296 Scopus citations

Abstract

Adaptation occurs in a variety of forms in all sensory systems, motivating the question: what is its purpose? A productive approach has been to hypothesize that adaptation helps neural systems to efficiently encode stimuli whose statistics vary in time. To encode efficiently, a neural system must change its coding strategy, or computation, as the distribution of stimuli changes. Information theoretic methods allow this efficient coding hypothesis to be tested quantitatively. Empirically, adaptive processes occur over a wide range of timescales. On short timescales, underlying mechanisms include the contribution of intrinsic nonlinearities. Over longer timescales, adaptation is often power-law-like, implying the coexistence of multiple timescales in a single adaptive process. Models demonstrate that this can result from mechanisms within a single neuron.

Original languageEnglish (US)
Pages (from-to)423-429
Number of pages7
JournalCurrent Opinion in Neurobiology
Volume17
Issue number4
DOIs
StatePublished - Aug 2007

ASJC Scopus subject areas

  • Neuroscience(all)

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