PMID: 9442850Jan 1, 1997Paper

Representation of periodicity pitch in the primary auditory cortex of the Mongolian gerbil

Acta Oto-laryngologica. Supplementum
H Schulze, G Langner

Abstract

Responses of single and multi-units in the primary auditory cortex (AI) of the Mongolian gerbil to tones and amplitude modulations (AMs) were studied. Two types of AM stimuli were used: i) those which were spectrally inside the unit's frequency response range (FRR) and ii) those that were spectrally completely outside a unit's FRR. In response to AMs spectrally within a unit's FRR, a minority of units showed phase-locked responses tuned to a certain range of modulation frequencies (envelope periodicities) of the AM. Phase-locking was confined to frequencies up to 65 Hz, the range best modulation frequencies covered by this synchrony code (sync-BMFs) contained values between 5 and 30 Hz. In response to AMs completely outside a unit's FRR, 69% of the units in the low frequency area of AI (up to 3 kHz best frequency) exhibited phasic or tonic responses tuned to certain envelope periodicities with rate-BMFs ranging from 50 to about 3000 Hz, a range that might be sufficient to account for a representation of periodicity pitch. Topographic reconstruction of the recording sites of such units revealed that, in contrast to the sync-BMFs described above, the rate-BMF values were systematically distributed within AI, therefore reflecting ...Continue Reading

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Citations

Feb 18, 2009·Biological cybernetics·Paul V WatkinsDennis L Barbour
Apr 13, 2002·Hearing Research·Malte KittelGeorg M Klump
Jun 6, 2008·The Journal of the Acoustical Society of America·Sridhar KalluriShihab A Shamma
Dec 17, 2008·International Review of Psychiatry·Thomas Becker, Reinhold Kilian
Sep 6, 2011·Journal of Neuroscience Methods·Nalin KattaDennis L Barbour
Sep 24, 2009·Hearing Research·Larry F HughesDonald M Caspary
Apr 9, 2014·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Jos J Eggermont
Mar 27, 2004·Physiological Reviews·P X JorisA Rees
Nov 4, 2006·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Lutz Wiegrebe, Veronika Sonnleitner
Jan 1, 1997·Acta Oto-laryngologica. Supplementum·G Langner
Jul 11, 2008·Journal of Neurophysiology·Bjarne KrebsBenedikt Grothe

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