Natural sound statistics and divisive normalization in the auditory system

Odelia Schwartz, Eero P. Simoncelli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

Abstract

We explore the statistical properties of natural sound stimuli pre-processed with a bank of linear filters. The responses of such filters exhibit a striking form of statistical dependency, in which the response variance of each filter grows with the response amplitude of filters tuned for nearby frequencies. These dependencies may be substantially reduced using an operation known as divisive normalization, in which the response of each filter is divided by a weighted sum of the rectified responses of other filters. The weights may be chosen to maximize the independence of the normalized responses for an ensemble of natural sounds. We demonstrate that the resulting model accounts for non-linearities in the response characteristics of the auditory nerve, by comparing model simulations to electrophysiological recordings. In previous work (NIPS, 1998) we demonstrated that an analogous model derived from the statistics of natural images accounts for non-linear properties of neurons in primary visual cortex. Thus, divisive normalization appears to be a generic mechanism for eliminating a type of statistical dependency that is prevalent in natural signals of different modalities.

Original languageEnglish (US)
Title of host publicationAdvances in Neural Information Processing Systems
PublisherNeural information processing systems foundation
ISBN (Print)0262122413, 9780262122412
StatePublished - 2001
Externally publishedYes
Event14th Annual Neural Information Processing Systems Conference, NIPS 2000 - Denver, CO, United States
Duration: Nov 27 2000Dec 2 2000

Other

Other14th Annual Neural Information Processing Systems Conference, NIPS 2000
CountryUnited States
CityDenver, CO
Period11/27/0012/2/00

Fingerprint

Statistics
Acoustic waves
Neurons

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Signal Processing

Cite this

Schwartz, O., & Simoncelli, E. P. (2001). Natural sound statistics and divisive normalization in the auditory system. In Advances in Neural Information Processing Systems Neural information processing systems foundation.

Natural sound statistics and divisive normalization in the auditory system. / Schwartz, Odelia; Simoncelli, Eero P.

Advances in Neural Information Processing Systems. Neural information processing systems foundation, 2001.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Schwartz, O & Simoncelli, EP 2001, Natural sound statistics and divisive normalization in the auditory system. in Advances in Neural Information Processing Systems. Neural information processing systems foundation, 14th Annual Neural Information Processing Systems Conference, NIPS 2000, Denver, CO, United States, 11/27/00.
Schwartz O, Simoncelli EP. Natural sound statistics and divisive normalization in the auditory system. In Advances in Neural Information Processing Systems. Neural information processing systems foundation. 2001
Schwartz, Odelia ; Simoncelli, Eero P. / Natural sound statistics and divisive normalization in the auditory system. Advances in Neural Information Processing Systems. Neural information processing systems foundation, 2001.
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