Journal ArticleDOI
The lower limit of pitch as determined by rate discrimination.
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TLDR
The hypothesis that in the low-frequency region, the pitch limit is determined by a temporal mechanism, which analyzes time intervals between peaks in the neural activity pattern, is supported.Abstract:
This paper is concerned with the lower limit of pitch for complex, harmonic sounds, like the notes produced by low-pitched musical instruments. The lower limit of pitch is investigated by measuring rate discrimination thresholds for harmonic tones filtered into 1.2-kHz-wide bands with a lower cutoff frequency, Fc, ranging from 0.2 to 6.4 kHz. When Fc is below 1 kHz and the harmonics are in cosine phase, rate discrimination threshold exhibits a rapid, tenfold decrease as the repetition rate is increased from 16 to 64 Hz, and over this range, the perceptual quality of the stimuli changes from flutter to pitch. When Fc is increased above 1 kHz, the slope of the transition from high to low thresholds becomes shallower and occurs at progressively higher rates. A quantitative comparison of the cosine-phase thresholds with subjective estimates of the existence region of pitch from the literature shows that the transition in rate discrimination occurs at approximately the same rate as the lower limit of pitch. Th...read more
Citations
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Journal ArticleDOI
The Processing of Temporal Pitch and Melody Information in Auditory Cortex
Roy D. Patterson,Stefan Uppenkamp,Ingrid S. Johnsrude,Timothy D. Griffiths,Timothy D. Griffiths +4 more
TL;DR: The results support the view that there is hierarchy of pitch processing in which the center of activity moves anterolaterally away from primary auditory cortex as the processing of melodic sounds proceeds.
Journal ArticleDOI
Temporal and rate representations of time-varying signals in the auditory cortex of awake primates.
Thomas Lu,Li Liang,Xiaoqin Wang +2 more
TL;DR: It is shown that there are two largely distinct populations of neurons in the auditory cortex of awake primates: one with stimulus-synchronized discharges that, with a temporal code, explicitly represented slowly occurring sound sequences and the other with non-stimulus-syn synchronized discharge that implicitly represented rapidly occurring events.
Journal ArticleDOI
Neural representations of sinusoidal amplitude and frequency modulations in the primary auditory cortex of awake primates.
Li Liang,Thomas Lu,Xiaoqin Wang +2 more
TL;DR: It is shown that individual auditory cortical neurons, as well as populations of neurons, have common features in their responses to both sAM and sFM stimuli, demonstrating that there are systematic cortical representations of embedded temporal features that are based on both average discharge rate and stimulus-synchronized discharge patterns.
Journal ArticleDOI
Neuromagnetic Evidence for a Pitch Processing Center in Heschl’s Gyrus
Katrin Krumbholz,Roy D. Patterson,Annemarie Seither-Preisler,Christian Lammertmann,Bernd Lütkenhöner +4 more
TL;DR: A novel stimulus paradigm designed to circumvent the energy-onset response and thereby isolate the response of those neural elements specifically involved in pitch processing is described.
Journal ArticleDOI
Hemispheric asymmetry for spectral and temporal processing in the human antero-lateral auditory belt cortex
TL;DR: The findings indicate that asymmetrical processing of complex sounds in the cerebral hemispheres does not depend on semantic, but rather on acoustic stimulus characteristics, and supports a similar function of the anterior auditory belt in humans.
References
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Transformed Up‐Down Methods in Psychoacoustics
TL;DR: A broad class of up‐down methods used in psychoacoustics with due emphasis on the related problems of parameter estimation and the efficient placing of observations is described, including examples where conventional techniques are inapplicable.
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Derivation of auditory filter shapes from notched-noise data
TL;DR: Modifications to the fitting procedure are described which allow more accurate derivations of filter shapes derived from data where the notch is always placed symmetrically about the signal frequency and when the underlying filter is markedly asymmetric.
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Pitch, consonance, and harmony
TL;DR: Comparison of recent psychoacoustic data on consonance with those on roughness reveals that “psychoacoustic consonance” merely corresponds to the absence of roughness and is only slightly and indirectly correlated with musical intervals, so psychoac acoustic consonance cannot be considered as the basis of the sense of musical intervals.
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Time‐domain modeling of peripheral auditory processing: A modular architecture and a software platform
TL;DR: A software package with a modular architecture has been developed to support perceptual modeling of the fine-grain spectro-temporal information observed in the auditory nerve, including new forms of periodicity-sensitive temporal integration that generate stabilized auditory images.
Journal ArticleDOI
An optimum processor theory for the central formation of the pitch of complex tones
TL;DR: A theory was formulated for the central formation of the pitch of complex tones, i.e., periodicity pitch, which is a logical deduction from statistical estimation theory of the optimal estimate for fundamental frequency.