Temporal resolution of the Florida manatee (Trichechus manatus latirostris) auditory system

被引：25

作者：

Mann, DA

Colbert, DE

Gaspard, JC

Casper, BM

Cook, MLH

Reep, RL

Bauer, GB

机构：

[1] Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA

[2] Mote Marine Lab, Sarasota, FL 34236 USA

[3] Univ Florida, Dept Physiol Sci, Gainesville, FL 32610 USA

[4] Univ Florida, McKnight Brain Inst, Gainesville, FL 32610 USA

[5] New Coll Florida, Div Social Sci, Sarasota, FL 34243 USA

来源：

JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY | 2005年 / 191卷 / 10期

关键词：

manatee; hearing;

D O I：

10.1007/s00359-005-0016-2

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

Auditory evoked potential (AEP) measurements of two Florida manatees (Trichechus manatus latirostris) were measured in response to amplitude modulated tones. The AEP measurements showed weak responses to test stimuli from 4 kHz to 40 kHz. The manatee modulation rate transfer function (MRTF) is maximally sensitive to 150 and 600 Hz amplitude modulation (AM) rates. The 600 Hz AM rate is midway between the AM sensitivities of terrestrial mammals (chinchillas, gerbils, and humans) (80-150 Hz) and dolphins (1,000-1,200 Hz). Audiograms estimated from the input-output functions of the EPs greatly underestimate behavioral hearing thresholds measured in two other manatees. This underestimation is probably due to the electrodes being located several centimeters from the brain.

引用

页码：903 / 908

页数：6

共 20 条

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