Timing of pure tone and noise-evoked responses in macaque auditory cortex

Peter Lakatos, Zsuzsanna Pincze, Kai Ming G. Fu, Daniel C. Javitt, George Karmos, Charles E. Schroeder

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

We compared onset latencies for characteristic frequency pure tone and broadband noise responses in AI and posterior belt regions of the auditory cortex in awake macaques. We found that (1) in AI, responses to characteristic frequency tones and broadband noise have similar latencies, (2) in belt regions, characteristic frequency tone and broadband noise latencies differ significantly; broadband noise latencies are shorter, while characteristic frequency tone latencies are longer than corresponding values in AI, (3) for both pure tone and broadband noise responses in AI, latency decreases with increasing characteristic frequency and (4) despite a similar inverse relationship of tone latency and local characteristic frequency in belt areas, broadband noise latencies are uniformly short, and appear unrelated to local characteristic frequency. Dissociation of broadband noise and pure tone latencies may reflect the use of parallel anatomical routes into belt regions.

Original languageEnglish
Pages (from-to)933-937
Number of pages5
JournalNeuroreport
Volume16
Issue number9
DOIs
Publication statusPublished - Jun 21 2005

Keywords

  • Auditory cortex
  • Characteristic frequency
  • Frequency tuning
  • Macaque
  • Multiunit activity
  • Onset latency
  • Tonotopy

ASJC Scopus subject areas

  • Neuroscience(all)

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    Lakatos, P., Pincze, Z., Fu, K. M. G., Javitt, D. C., Karmos, G., & Schroeder, C. E. (2005). Timing of pure tone and noise-evoked responses in macaque auditory cortex. Neuroreport, 16(9), 933-937. https://doi.org/10.1097/00001756-200506210-00011