Responses of cells in the auditory cortex of awake squirrel monkeys to normal and reversed species-specific vocalizations

Glass, I.; Wollberg, Z.

doi:10.1016/0378-5955(83)90131-4

Cited by 53 publications

(23 citation statements)

References 22 publications

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“…It has been suggested that responsive ness of AC neurons to various sounds, ar tificial as well as isolated natural stimuli, is based mainly on their sensitivity to spe cific stimulus components defined by a short duration relative to the entire stimu lus duration, by relatively high intensity, and by specific spectral characteristics [Katsuki et al, 1962;Newman and Symmes, 1979;Creutzfeldt et al, 1980;Glass and Wollberg, 1982]. The similarity between the responsiveness to calls and llacs reported in the present paper sup ports that suggestion.…”

Section: Discussionsupporting

confidence: 71%

“…Furthermore, the importance of using animal sounds is stressed by the question as to whether, during evolution, the auditory system was specialized for se lective responses to communication sounds of biological and survival import ance [Capranica. 1972], This suggestion has not been supported by recent behav ioral and electrophysiological studies, in dicating that biologically relevant sounds (e.g., species-specific calls) and artificial sounds (e.g., calls played back in reverse, or synthesized sounds) are similarly discriminable and effective in eliciting re sponses from auditory cortex [Hupfer et al, 1977;Creutzfeldtet a!., 1980;Glass and Wollberg, 1982;Wollberg and Glass, 1982]. However, animal sounds used in these studies and other relevant investigations typically were 'electronically edited' to separate the natural stimuli from the ongo ing recorded sounds to allow isolated presentation to the experimental animal.…”

Section: Introductionmentioning

confidence: 75%

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Auditory Cortex Responses to Sequences of Normal and Reversed Squirrel Monkey Vocalizations

Glass

Wollberg²

1983

Brain Behav Evol

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Responsiveness of auditory cortex (AC) units of awake squirrel monkeys to a natural sequence of species-specific calls was not significantly different from their responsiveness to a reverse playback of the sequence. No dependency was noted between the percentage of responding units and the average intensity of sounds, their spectral content or their order of presentation. The effectiveness of the sounds in eliciting responses was variable even when the sequence was produced in an unchanging behavioral context. Comparison of these findings with earlier results of individual vocalizations presented normally or backward in an isolated manner suggest that responsiveness of AC neurons to continuous sounds is lower than their responsiveness to isolated sounds, whether natural or artificial.

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Section: Discussionsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 75%

Auditory Cortex Responses to Sequences of Normal and Reversed Squirrel Monkey Vocalizations

Glass

Wollberg²

1983

Brain Behav Evol

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“…stimuli with the same spectral structure but a different temporal structure and lacking the natural behavioural meaning of these calls. Glass & Wollberg (1983) found in the awake squirrel monkey that the responsiveness of cells of both primary and secondary auditory cortices was not significantly different from calls or their timereversed versions; very few cells were found to show 'reversed responses' to the time-reversed vocalizations (Glass & Wollberg 1983). However, a more recent study in the anaesthetized common marmoset found that a majority of A1 neurons showed stronger responses to natural marmoset twitter calls than to their time-reversed version (Wang et al 1995).…”

Section: Are Conspecific Vocalizations Special?mentioning

confidence: 99%

Voice processing in human and non-human primates

Belin

2006

Phil. Trans. R. Soc. B

138

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Humans share with non-human primates a number of voice perception abilities of crucial importance in social interactions, such as the ability to identify a conspecific individual from its vocalizations. Speech perception is likely to have evolved in our ancestors on the basis of pre-existing neural mechanisms involved in extracting behaviourally relevant information from conspecific vocalizations (CVs). Studying the neural bases of voice perception in primates thus not only has the potential to shed light on cerebral mechanisms that may be-unlike those involved in speech perception-directly homologous between species, but also has direct implications for our understanding of how speech appeared in humans. In this comparative review, we focus on behavioural and neurobiological evidence relative to two issues central to voice perception in human and non-human primates: (i) are CVs 'special', i.e. are they analysed using dedicated cerebral mechanisms not used for other sound categories, and (ii) to what extent and using what neural mechanisms do primates identify conspecific individuals from their vocalizations?

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“…While there are undoubtedly cells of high specificity that respond to complex signals (e.g., species-specific vocal calls, Glass & Wollberg, 1983), it is unlikely that cells exist that are specifically tuned to scales made of Shepard tones. Presumably, the use of Shepard scales as adaptation stimuli would fatigue a large number ofspectralmotion-specific cells that respond to different pitch ranges.…”

mentioning

confidence: 99%

Spectral-motion aftereffects and the tritone paradox among Canadian subjects

Dawe

Platt

Welsh

1998

Perception & Psychophysics

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The effect of spectral motion on the tritone paradox was investigated by pretesting subjects residing in southwestern Ontario, Canada, on the tritone task, presenting them with a continuous ascending or descending chromatic scale created using Shepard tones, and then retesting them on the tritone task. Results indicated a negative-motion aftereffect that affected the orientation of the pitch class circle. Differential effects of perceived pitch height on the lower portion of the pitch class circle and of adaptation on the upper portion of the pitch class circle were found in the pre-and postadaptation data, respectively. The implications of this dissociation are discussed. In addition, since our subjects lived relatively close to the U.S. border, the experimental pretests allowed us to examine the hypothesis that a canonical American pitch template similar to that found among "Californian" subjects (Deutsch, 1991) is propagated by linguistic influences of media such as television and radio (Ragozzine & Deutsch, 1994). A survey of our subjects indicated that overall, the majority of time engaged in listening to the radio and watching television or movies was spent with American sources. Despite this, and despite the fact that subjects had widely varying language and cultural backgrounds, a tight distribution of peak-pitch classes was found that is indicative of a "British" pitch template (Deutsch, 1991) for every subject tested.For more than 30 years, researchers have made use of specially designed complex harmonic tones in their investigations of different perceptual attributes associated with tonal relationships (Shepard, 1964). In these Shepard tones, adjacent partials are spaced at octave intervals and then filtered through a constant spectral envelope. Shepard tones are useful as stimuli in many psychoacoustic investigations because they ambiguate pitch height while maintaining the chroma of the tone being played. For example, repetitively playing the same 12 chromatic tones spanning an octave will create an illusion of a continuous ascending or descending pitch sequence, depending on whether one plays the chromatic series as ascending or descending, respectively ( Figure IA).Playing pairs ofsuch tones will create the perception of an ascending or descending interval on the basis of pitch proximity. Ifthe second tone is less than halfan octave (an interval called the "tritone") above the first, one typically perceives an ascending interval, whereas if the interval is greater than the tritone, one perceives it as descendingThe authors are grateful to 1. Visser for her assistance in running subjects, A. Cohen for providing information regarding an unpublished study, and K. Kewish, D. Deutsch, B. Repp, and an anonymous reviewer for helpful comments. This research was supported by grants to L

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Responses of cells in the auditory cortex of awake squirrel monkeys to normal and reversed species-specific vocalizations

Cited by 53 publications

References 22 publications

Auditory Cortex Responses to Sequences of Normal and Reversed Squirrel Monkey Vocalizations

Auditory Cortex Responses to Sequences of Normal and Reversed Squirrel Monkey Vocalizations

Voice processing in human and non-human primates

Spectral-motion aftereffects and the tritone paradox among Canadian subjects

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