Journal article
Complex spectral interactions encoded by auditory cortical neurons: relationship between bandwidth and pattern
Frontiers in systems neuroscience, Vol.4, pp.145-145
01/01/2010
DOI: 10.3389/fnsys.2010.00145
PMCID: PMC2998047
PMID: 21152347
Abstract
The focus of most research on auditory cortical neurons has concerned the effects of rather simple stimuli, such as pure tones or broad-band noise, or the modulation of a single acoustic parameter. Extending these findings to feature coding in more complex stimuli such as natural sounds may be difficult, however. Generalizing results from the simple to more complex case may be complicated by non-linear interactions occurring between multiple, simultaneously varying acoustic parameters in complex sounds. To examine this issue in the frequency domain, we performed a parametric study of the effects of two global features, spectral pattern (here ripple frequency) and bandwidth, on primary auditory (A1) neurons in awake macaques. Most neurons were tuned for one or both variables and most also displayed an interaction between bandwidth and pattern implying that their effects were conditional or interdependent. A spectral linear filter model was able to qualitatively reproduce the basic effects and interactions, indicating that a simple neural mechanism may be able to account for these interdependencies. Our results suggest that the behavior of most A1 neurons is likely to depend on multiple parameters, and so most are unlikely to respond independently or invariantly to specific acoustic features.
Details
- Title: Subtitle
- Complex spectral interactions encoded by auditory cortical neurons: relationship between bandwidth and pattern
- Creators
- Kevin N. O'Connor - University of California, DavisPingbo Yin - University of Maryland, College ParkChristopher I. Petkov - Newcastle UniversityMitchell L. Sutter - University of California, Davis
- Resource Type
- Journal article
- Publication Details
- Frontiers in systems neuroscience, Vol.4, pp.145-145
- DOI
- 10.3389/fnsys.2010.00145
- PMID
- 21152347
- PMCID
- PMC2998047
- NLM abbreviation
- Front Syst Neurosci
- ISSN
- 1662-5137
- eISSN
- 1662-5137
- Publisher
- Frontiers Media Sa
- Number of pages
- 16
- Grant note
- DCO2514 / National Institutes of Health (National Institute of Deafness and Communication Disorders); United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Deafness & Other Communication Disorders (NIDCD) J.S. McDonnell Foundation
- Language
- English
- Date published
- 01/01/2010
- Academic Unit
- Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984360133202771
Metrics
16 Record Views