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  • Comparative Studies. Non-European Languages/Literatures  (9)
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  • Comparative Studies. Non-European Languages/Literatures  (9)
RVK
  • 1
    Online Resource
    Online Resource
    Neural representation of pitch in auditory cortex
    Acoustical Society of America (ASA) ; 2007
    In:  The Journal of the Acoustical Society of America Vol. 121, No. 5_Supplement ( 2007-05-01), p. 3068-3068
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 121, No. 5_Supplement ( 2007-05-01), p. 3068-3068
    Abstract: Pitch perception is crucial for vocal communication, music perception, and auditory object processing in a complex acoustic environment. The neural representation of pitch in the cerebral cortex has long been an outstanding question in auditory neuroscience. Both animal and human studies have implicated the role of the cerebral cortex in underlying pitch perception. Recent findings indicate that there is a specialized region in the auditory cortex of primates that is involved in the representation of pitch. This presentation will review key studies in the identification of a pitch processing center in primate auditory cortex and discuss issues concerning the neural substrate of pitch perception. [Research supported by NIH Grants DC003180 and DC005808.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4781860
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2007
    detail.hit.zdb_id: 1461063-2
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  • 2
    Online Resource
    Online Resource
    Spectral and temporal integration in the auditory cortex of alert primates
    Acoustical Society of America (ASA) ; 2001
    In:  The Journal of the Acoustical Society of America Vol. 109, No. 5_Supplement ( 2001-05-01), p. 2408-2408
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 109, No. 5_Supplement ( 2001-05-01), p. 2408-2408
    Abstract: Lesion studies in humans and primates have shown that the auditory cortex is necessary for the perception of spectrally and temporally complex sounds. Our knowledge on signal processing mechanisms in this cortical area, however, has been largely based on experimental observations obtained under anesthetized conditions. Anesthetics have long been known to have severe side effects on auditory cortical responses. We have systematically studied single-unit activities in the auditory cortex of alert primates using a wide range of spectrally and temporally complex sounds. In the spectral domain, our results showed that neurons in the auditory cortex integrate inputs as far away as several octaves from their central excitatory receptive fields. Such spectral integration appears to be supported by an extensive network of long-range horizontal connections. In the temporal domain, we showed that stimulus-synchronized discharges are on average limited to 20–30 ms inter-stimulus intervals in the unanesthetized cortex. Acoustic transients occurring at shorter time scales are integrated by cortical neurons and transformed into discharge-rate based representations. These findings suggest that (1) processing of acoustic signals by individual cortical neurons is modulated by spectral context and (2) time-varying signals are represented in nonisomorphic forms in the auditory cortex.  
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4744509
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2001
    detail.hit.zdb_id: 1461063-2
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  • 3
    Online Resource
    Online Resource
    Cortical representations of pitch: theories and experiments
    Acoustical Society of America (ASA) ; 2012
    In:  The Journal of the Acoustical Society of America Vol. 131, No. 4_Supplement ( 2012-04-01), p. 3441-3441
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 131, No. 4_Supplement ( 2012-04-01), p. 3441-3441
    Abstract: Pitch perception is one of the most important auditory perceptual phenomena. Its underlying neural mechanisms have not been well understood. Recent human imaging studies and neurophysiology experiments in non-human primate have begun to reveal possible neural coding mechanisms in the cerebral cortex. These studies have pointed to a specialized area in the rostral region of primate auditory cortex where harmonic pitch is extracted. How pitch-selective neurons in this cortical area extract harmonic pitch at the cellular level, however, is yet known. Moreover, it remained to be explored whether other auditory cortical areas process aspects of pitch that are not processed by this rostral pitch-region. An important issue in the study of cortical representations of pitch is whether pitch embedded in harmonic complex sounds is extracted and uniquely represented by a specific cortical area or a subset of neurons in that area. Simply showing that pitch information exists in neural firing in a cortical area is not an adequate demonstration of pitch processing mechanisms. (Research supported by NIH grant R01-DC003180)
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4708911
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2012
    detail.hit.zdb_id: 1461063-2
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  • 4
    Online Resource
    Online Resource
    Human-like pitch perception mechanisms in marmoset monkeys
    Acoustical Society of America (ASA) ; 2019
    In:  The Journal of the Acoustical Society of America Vol. 145, No. 3_Supplement ( 2019-03-01), p. 1785-1785
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 145, No. 3_Supplement ( 2019-03-01), p. 1785-1785
    Abstract: The perception of the pitch of harmonic complex sounds is a crucial function of human audition, especially in music and speech processing. Whether the underlying mechanisms of pitch perception are unique to humans, however, is unknown. Based on estimates of frequency resolution at the level of the auditory periphery, psychoacoustic studies in humans have revealed several primary features of central pitch mechanisms. It has been shown that (1) the pitch strength of a harmonic tone is dominated by resolved harmonics; (2) pitch of resolved harmonics is sensitive to the quality of spectral harmonicity; and (3) pitch of unresolved harmonics is sensitive to the salience of temporal envelope cues. Here, we show that, for a standard musical tuning fundamental frequency of 440 Hz (ISO 16), the common marmoset (Callithrix jacchus), a New World monkey with a hearing range similar to that of humans, exhibits all the primary features of central pitch mechanisms demonstrated in humans. Thus, marmosets and humans may share similar pitch perception mechanisms, combined with previous findings of a specialized pitch processing region in both marmoset and human auditory cortex, suggesting that these mechanisms may have emerged early in primate evolution.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.5101530
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2019
    detail.hit.zdb_id: 1461063-2
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  • 5
    Online Resource
    Online Resource
    Auditory and tactile integration in music meter perception.
    Acoustical Society of America (ASA) ; 2010
    In:  The Journal of the Acoustical Society of America Vol. 127, No. 3_Supplement ( 2010-03-01), p. 1949-1949
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 127, No. 3_Supplement ( 2010-03-01), p. 1949-1949
    Abstract: Meter is a fundamental temporal structure of music. The perception of meter is typically inferred from the occurrence of accents in the music surface. Under normal listening conditions, listening to or playing music is usually accompanied by vibro-tactile input which we hypothesize contributes to meter perception. Previous studies have shown that beat perception can occur via purely tactile stimulation. Whether vibro-tactile stimulation can give rise to meter perception and how it interacts with auditory meter perception is unknown. Here we used accent occurrence and strength as cues to study meter perception in subjects performing auditory only, tactile only, and combined auditory-tactile psychophysical discrimination tasks. We find that subjects can perceive meter through purely auditory only and tactile only stimulation. Furthermore, when stimuli were ambiguous, tactile stimulation was found to enhance meter perception when subjects were given weak auditory amplitude-accented cues. Similarly, auditory stimulation enhanced meter perception when subjects were given weak tactile amplitude-accented cues. These results indicate that meter perception is processed cross-modally, and that auditory-tactile integration plays an important role in the neural representation of temporal structures in music.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.3384928
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2010
    detail.hit.zdb_id: 1461063-2
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  • 6
    Online Resource
    Online Resource
    Top-down vocal feedback control in active hearing.
    Acoustical Society of America (ASA) ; 2010
    In:  The Journal of the Acoustical Society of America Vol. 127, No. 3_Supplement ( 2010-03-01), p. 2030-2030
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 127, No. 3_Supplement ( 2010-03-01), p. 2030-2030
    Abstract: Speaking is a sensory-motor process that involves constant self-monitoring to ensure accurate vocal production. This monitoring of vocal feedback allows a speaker to quickly adjust speech production to correct perceived errors between intended and actually produced vocal sounds. The self-monitoring in speaking is crucial for learning to speak native as well as foreign languages. An important behavior in vocal feedback control for both human speech and animal vocalizations is the compensatory change in speech or vocalizations (e.g., pitch, frequency, and intensity) when there is a mismatch between intended and perceived vocal sounds. Such a behavior requires mechanisms for continuously monitoring auditory feedback during vocal production. We have found that disruption of auditory feedback during vocalization alters coding properties of auditory cortex neurons in marmosets (a highly vocal primate species). Furthermore, when marmosets compensate for changes in vocal feedback, there are corresponding changes in their cortical neural activity. These findings suggest that the neural network underlying self-monitoring of vocal production likely consists of both sensory processing and top-down modulations via higher-cortical areas involving planning and memory.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.3385326
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2010
    detail.hit.zdb_id: 1461063-2
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  • 7
    Online Resource
    Online Resource
    A quantitative acoustic analysis of the vocal repertoire of the common marmoset ( Callithrix jacchus )
    Acoustical Society of America (ASA) ; 2015
    In:  The Journal of the Acoustical Society of America Vol. 138, No. 5 ( 2015-11-01), p. 2906-2928
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 138, No. 5 ( 2015-11-01), p. 2906-2928
    Abstract: The common marmoset (Callithrix jacchus), a highly vocal New World primate species, has emerged in recent years as a promising animal model for studying brain mechanisms underlying perception, vocal production, and cognition. The present study provides a quantitative acoustic analysis of a large number of vocalizations produced by marmosets in a social environment within a captive colony. Previous classifications of the marmoset vocal repertoire were mostly based on qualitative observations. In the present study a variety of vocalizations from individually identified marmosets were sampled and multiple acoustic features of each type of vocalization were measured. Results show that marmosets have a complex vocal repertoire in captivity that consists of multiple vocalization types, including both simple calls and compound calls composed of sequences of simple calls. A detailed quantification of the vocal repertoire of the marmoset can serve as a solid basis for studying the behavioral significance of their vocalizations and is essential for carrying out studies that investigate such properties as perceptual boundaries between call types and among individual callers as well as neural coding mechanisms for vocalizations. It can also serve as the basis for evaluating abnormal vocal behaviors resulting from diseases or genetic manipulations.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4934268
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2015
    detail.hit.zdb_id: 1461063-2
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  • 8
    Online Resource
    Online Resource
    Cortical plasticity and representation of spatially temporally distributed tactile stimuli
    Acoustical Society of America (ASA) ; 1995
    In:  The Journal of the Acoustical Society of America Vol. 97, No. 5_Supplement ( 1995-05-01), p. 3236-3236
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 97, No. 5_Supplement ( 1995-05-01), p. 3236-3236
    Abstract: An important property of the cerebral cortex is its ability to reorganize itself in response to changing sensory environment throughout life. Representational ‘‘maps’’ of skin surfaces in the primary somatosensory cortex (SI) are remodeled after many forms of input alteration. Two questions were addressed in our recent plasticity experiment: Under what specific conditions are spatially distributed and time-varying sensory inputs (a) integrated, or (b) segregated in their representations by the dynamic mechanisms underlying cortical function? The results showed that the topographic map of skin surfaces in SI was dramatically remodeled in adult owl monkeys trained to discriminate two tactile stimuli applied to distal and proximal segments of their fingers in alternation. Subsequent mapping of area 3b revealed neural responses with either distal or proximal multiple-digit receptive fields, reflecting cortical integration of inputs from temporally coincidentally excited skin surfaces. By contrast, the cortical representations of temporally noncoincidentally stimulated skin surfaces were segregated from each other. These findings directly demonstrate that for learning induced plastic changes in cortical topographic maps, afferent input integration and segregation are dependent on stimulus coincidence, and that regularly practiced hand use results in a representation of its sensory surfaces in the brain that reflects that specific use.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.411781
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1995
    detail.hit.zdb_id: 1461063-2
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  • 9
    Online Resource
    Online Resource
    Acoustic analysis of vocal development in a New World primate, the common marmoset ( Callithrix jacchus )
    Acoustical Society of America (ASA) ; 2006
    In:  The Journal of the Acoustical Society of America Vol. 120, No. 3 ( 2006-09-01), p. 1655-1670
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 120, No. 3 ( 2006-09-01), p. 1655-1670
    Abstract: In contrast to humans and songbirds, there is limited evidence of vocal learning in nonhuman primates. While previous studies suggested that primate vocalizations exhibit developmental changes, detailed analyses of the extent and time course of such changes across a species’ vocal repertoire remain limited. In a highly vocal primate, the common marmoset (Callithrix jacchus), we studied developmental changes in the acoustic structure of species-specific communication sounds produced in a social setting. We performed detailed acoustic analyses of the spectral and temporal characteristics of marmoset vocalizations during development, comparing differences between genders and twin pairs, as well as with vocalizations from adult marmosets residing in the same colony. Our analyses revealed significant changes in spectral and temporal features as well as variability of particular call types over time. Infant and juvenile vocalizations changed progressively toward the vocalizations produced by adult marmosets. Call types observed early in development that were unique to infants disappeared gradually with age, while vocal exchanges with conspecifics emerged. Our observations clearly indicate that marmoset vocalizations undergo both qualitative and quantitative postnatal changes, establishing the basis for further studies to delineate contributions from maturation of the vocal apparatus and behavioral experience.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2225899
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2006
    detail.hit.zdb_id: 1461063-2
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