Auditory cortex represents both pitch judgments and the corresponding acoustic cues

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Jennifer K. Bizley
  • Kerry M.M. Walker
  • Fernando R. Nodal
  • Andrew J. King
  • Jan W.H. Schnupp

Detail(s)

Original languageEnglish
Pages (from-to)620-625
Journal / PublicationCurrent Biology
Volume23
Issue number7
Publication statusPublished - 8 Apr 2013
Externally publishedYes

Abstract

The neural processing of sensory stimuli involves a transformation of physical stimulus parameters into perceptual features, and elucidating where and how this transformation occurs is one of the ultimate aims of sensory neurophysiology. Recent studies have shown that the firing of neurons in early sensory cortex can be modulated by multisensory interactions [1-5], motor behavior [1, 3, 6, 7], and reward feedback [1, 8, 9], but it remains unclear whether neural activity is more closely tied to perception, as indicated by behavioral choice, or to the physical properties of the stimulus. We investigated which of these properties are predominantly represented in auditory cortex by recording local field potentials (LFPs) and multiunit spiking activity in ferrets while they discriminated the pitch of artificial vowels. We found that auditory cortical activity is informative both about the fundamental frequency (F0) of a target sound and also about the pitch that the animals appear to perceive given their behavioral responses. Surprisingly, although the stimulus F0 was well represented at the onset of the target sound, neural activity throughout auditory cortex frequently predicted the reported pitch better than the target F0. © 2013 Elsevier Ltd.

Citation Format(s)

Auditory cortex represents both pitch judgments and the corresponding acoustic cues. / Bizley, Jennifer K.; Walker, Kerry M.M.; Nodal, Fernando R.; King, Andrew J.; Schnupp, Jan W.H.

In: Current Biology, Vol. 23, No. 7, 08.04.2013, p. 620-625.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal