NDLI: Tracking silence: adjusting vocal production to avoid acoustic interference

Content Provider	Springer Nature Link
Author	Egr, S. E. Roian Wickelgren, Jeanette Graham Hauser, Marc D.
Copyright Year	2007
Abstract	Organisms that use vocal signals to communicate often modulate their vocalizations to avoid being masked by other sounds in the environment. Although some environmental noise is continuous, both biotic and abiotic noise can be intermittent, or even periodic. Interference from intermittent noise can be avoided if calls are timed to coincide with periods of silence, a capacity that is unambiguously present in insects, amphibians, birds, and humans. Surprisingly, we know virtually nothing about this fundamental capacity in nonhuman primates. Here we show that a New World monkey, the cotton-top tamarin (Saguinus oedipus), can restrict calls to periodic silent intervals in loud white noise. In addition, calls produced during these silent intervals were significantly louder than calls recorded in silent baseline sessions. Finally, average call duration dropped across sessions, indicating that experience with temporally patterned noise caused tamarins to compress their calls. Taken together, these results show that in the presence of a predictable, intermittent environmental noise, cotton-top tamarins are able to modify the duration, timing, and amplitude of their calls to avoid acoustic interference.
Starting Page	477
Ending Page	483
Page Count	7
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	193
Issue Number	4
e-ISSN	14321351
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-01-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Vocal control Auditory masking Acoustic communication Call timing Zoology Neurosciences Animal Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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