Correlates of Forward Masking in Squirrel Monkeys
Perception and cognition are, besides intrinsic neural processes, essentially based on information from the organism’s peripheral sensory structures. And out of a huge “sensory” environment only those parameters will gain access to perceptive or cognitive brain structures which pass particular windows(filters) shaped by the mechanical, physiological and/or neural properties of the transforming organs(i.e. eyes,ears,skin, nose, etc.)- Thereby effects of masking play a considerable part in designing such windows. Mainly due to the temporal nature of acoustic signals but also due to the mechanics of the cochlea as the transforming organ, masking will strongly influence the information parameters available for the auditory system’s centripetal structures. Consequently, in the sense of adaptation at an optimal communication system, perceptive or cognitive brain activities will also have influences at the motor side. Thus, in the case of the auditory system, they may be reflected within the production of vocalizations.
KeywordsNonhuman Primate Spike Rate Masking Effect Forward Masking Collicular Neuron
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- Delgutte, B. (1988) Physiological mechanisms of masking. In H. Duifhuis, W.J. Horst and H.P. Wit (Eds). Basic is-sues in hearing, Academic Press, London, pp. 204–212.Google Scholar
- Delgutte, B. (1990) Physiological mechanisms of psychophysical masking:observations from auditory-nerve fibers, JASA, 87, 791–809.Google Scholar
- Fasti, H. (1976) Temporal masking effects: I. Broadband noise masker. Acoustica 35, 287–302.Google Scholar
- Schott, D. Quantitative analysis of the vocal repertoire of Squirrel monkeys(Saimiri sciureus) (1975) Z. für Tierpsychologie, 38, 225–250.Google Scholar