English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Meaning in the avian auditory cortex: Neural representation of communication calls

Elie, J. E., & Theunissen, F. E. (2015). Meaning in the avian auditory cortex: Neural representation of communication calls. European Journal of Neuroscience: European Neuroscience Association, 41(5), 546-567. doi:10.1111/ejn.12812.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Elie, J. E., Author
Theunissen, Frederic E.1, Author           
Affiliations:
1University Berkeley, USA, ou_persistent22              

Content

show
hide
Free keywords: Animals Auditory Cortex/cytology/*physiology *Brain Mapping Female Finches Male Neurons/physiology Vocalization, Animal categorization invariance selectivity semantics zebra finch
 Abstract: Understanding how the brain extracts the behavioral meaning carried by specific vocalization types that can be emitted by various vocalizers and in different conditions is a central question in auditory research. This semantic categorization is a fundamental process required for acoustic communication, and presupposes discriminative and invariance properties of the auditory system for conspecific vocalizations. Songbirds have been used extensively to study vocal learning, but the communicative function of all their vocalizations and their neural representation has yet to be examined. In this study, we first generated a library containing almost the entire zebra finch vocal repertoire, and organised communication calls along nine different categories according to their behavioral meaning. We then investigated the neural representations of these semantic categories in the primary and secondary auditory areas of six anesthetised zebra finches. To analyse how single units encode these call categories, we described neural responses in terms of their discrimination, selectivity and invariance properties. Quantitative measures for these neural properties were obtained with an optimal decoder using both spike counts and spike patterns. Information theoretic metrics show that almost half of the single units encode semantic information. Neurons achieve higher discrimination of these semantic categories by being more selective and more invariant. These results demonstrate that computations necessary for semantic categorization of meaningful vocalizations are already present in the auditory cortex, and emphasise the value of a neuro-ethological approach to understand vocal communication.

Details

show
hide
Language(s): eng - English
 Dates: 2015
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: 25728175
DOI: 10.1111/ejn.12812
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: European Journal of Neuroscience : European Neuroscience Association
  Other : Eur. J. Neurosci
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford, UK : Published on behalf of the European Neuroscience Association by Oxford University Press
Pages: - Volume / Issue: 41 (5) Sequence Number: - Start / End Page: 546 - 567 Identifier: ISSN: 0953-816X
CoNE: https://pure.mpg.de/cone/journals/resource/954925575988