| A mechanism for antiphonal echolocation by Free-tailed bats. | |
| | |
MedLine Citation:
|
PMID: 20419063 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Bats are highly social and spend much of their lives echolocating in the presence of other bats. To reduce the effects of acoustic interferences from other bats' echolocation calls, we hypothesized that bats might shift the timing of their pulse emissions to minimize temporal overlap with another bat's echolocation pulses. To test this hypothesis we investigated whether free-tailed bats (Tadarida brasiliensis) echolocating in the lab would shift the timing of their own pulse emissions in response to regularly repeating artificial acoustic stimuli. A robust phase-locked temporal pattern in pulse emissions was displayed by every bat tested which included an initial suppressive phase lasting more than 60 ms after stimulus onset, during which the probability of emitting pulses was reduced by more than fifty percent, followed by a compensatory rebound phase, the timing and amplitude of which were dependent on the temporal pattern of the stimulus. The responses were non-adapting and were largely insensitive to broad changes in the acoustic properties of the stimulus. Randomly occurring noise-bursts also suppressed calling for up to 60 ms, but the time-course of the compensatory rebound phase was more rapid than when the bats were responding to regularly repeating patterns of noise bursts. These findings provide the first quantitative description of how external stimuli may cause echolocating bats to alter the timing of subsequent pulse emissions. |
| | |
Authors:
|
Jenna Jarvis; Kirsten M Bohn; Jedediah Tressler; Michael Smotherman |
Related Documents
:
|
11970623 - High-frequency dynamics of wave localization. 13700883 - Nonlinear property of the visual system at fusion. 2212293 - Effect of masker level on overshoot. |
Publication Detail:
|
Type: JOURNAL ARTICLE |
Journal Detail:
|
Title: Animal behaviour Volume: 79 ISSN: 0003-3472 ISO Abbreviation: - Publication Date: 2010 Apr |
Date Detail:
|
Created Date: 2010-7-13 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0376746 Medline TA: Anim Behav Country: - |
Other Details:
|
Languages: ENG Pagination: 787-796 Citation Subset: - |
Affiliation:
|
Department of Biology, Texas A&M University, College Station, TX 77843-3258. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
| Grant Support | |
ID/Acronym/Agency:
|
R03 DC007962-03//NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Racial Differences in Relation Between Carotid and Radial Augmentation Index.
Next Document: Cognitive Mechanisms Underlying Risky Decision-Making in Chronic Cannabis Users.