Representations of the pitch of complex tones in the auditory nerve

Cedolin, Leonardo; Delgutte, Bertrand

doi:10.1007/0-387-27045-0_23

Cited by 3 publications

(1 citation statement)

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“…Pitch perception and its underlying coding mechanisms have been investigated for decades to understand what information is necessary for the human auditory system to extract pitch (for a review, see de Cheveigne´, 2005). Although some studies favored either a place-based (e.g., Goldstein, 1973;Ohm, 1843;Terhardt, 1974;von Helmholtz, 1877;Wightman, 1973) or a temporal approach (e.g., Licklider, 1951;Rutherford, 1886), more recent investigations suggested that both types of cues may be important for pitch coding (e.g., Cedolin & Delgutte, 2005;Heinz, Colburn, & Carney, 2001;Moore, 2003;Shamma & Klein, 2000;Oxenham, Bernstein, & Penagos, 2004).…”

Section: Introductionmentioning

confidence: 99%

Complex-Tone Pitch Discrimination in Listeners With Sensorineural Hearing Loss

et al. 2016

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Physiological studies have shown that noise-induced sensorineural hearing loss (SNHL) enhances the amplitude of envelope coding in auditory-nerve fibers. As pitch coding of unresolved complex tones is assumed to rely on temporal envelope coding mechanisms, this study investigated pitch-discrimination performance in listeners with SNHL. Pitch-discrimination thresholds were obtained for 14 normal-hearing (NH) and 10 hearing-impaired (HI) listeners for sine-phase (SP) and random-phase (RP) complex tones. When all harmonics were unresolved, the HI listeners performed, on average, worse than NH listeners in the RP condition but similarly to NH listeners in the SP condition. The increase in pitch-discrimination performance for the SP relative to the RP condition (F0DL ratio) was significantly larger in the HI as compared with the NH listeners. Cochlear compression and auditory-filter bandwidths were estimated in the same listeners. The estimated reduction of cochlear compression was significantly correlated with the increase in the F0DL ratio, while no correlation was found with filter bandwidth. The effects of degraded frequency selectivity and loss of compression were considered in a simplified peripheral model as potential factors in envelope enhancement. The model revealed that reducing cochlear compression significantly enhanced the envelope of an unresolved SP complex tone, while not affecting the envelope of a RP complex tone. This envelope enhancement in the SP condition was significantly correlated with the increased pitch-discrimination performance for the SP relative to the RP condition in the HI listeners.

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Section: Introductionmentioning

confidence: 99%

Complex-Tone Pitch Discrimination in Listeners With Sensorineural Hearing Loss

et al. 2016

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The Neurophysiology of Pitch

Winter

Pitch

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Neuronal periodicity detection as a basis for the perception of consonance: A mathematical model of tonal fusion

Ebeling¹

2008

The Journal of the Acoustical Society of America

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A mathematical model is presented here to explain the sensation of consonance and dissonance on the basis of neuronal coding and the properties of a neuronal periodicity detection mechanism. This mathematical model makes use of physiological data from a neuronal model of periodicity analysis in the midbrain, whose operation can be described mathematically by autocorrelation functions with regard to time windows. Musical intervals produce regular firing patterns in the auditory nerve that depend on the vibration ratio of the two tones. The mathematical model makes it possible to define a measure for the degree of these regularities for each vibration ratio. It turns out that this measure value is in line with the degree of tonal fusion as described by Stumpf [Tonpsychologie (Psychology of Tones) (Knuf, Hilversum), reprinted 1965]. This finding makes it probable that tonal fusion is a consequence of certain properties of the neuronal periodicity detection mechanism. Together with strong roughness resulting from interval tones with fundamentals close together or close to the octave, this neuronal mechanism may be regarded as the basis of consonance and dissonance.

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Representations of the pitch of complex tones in the auditory nerve

Cited by 3 publications

References 24 publications

Complex-Tone Pitch Discrimination in Listeners With Sensorineural Hearing Loss

Complex-Tone Pitch Discrimination in Listeners With Sensorineural Hearing Loss

The Neurophysiology of Pitch

Neuronal periodicity detection as a basis for the perception of consonance: A mathematical model of tonal fusion

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