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Behavioral neuroscience.
Publisher:
American Psychological Association,
Frequency: Bimonthly
Country: United States
Language: English
Author(s):
American Psychological Association.
Start Year:1983 -
Identifiers
| ISSN: | 0735-7044 (Print) 1939-0084 (Electronic) 0735-7044 (Linking) |
| NLM ID: | 8302411 |
| (DNLM): | B02410000(s) |
| (OCoLC): | 08998034 |
| Coden: | BENEDJ |
| Classification: | W1 BE13M |
Localization of tones by horses: use of binaural cues and the role of the superior olivary complex. The ability of horses to use binaural time and intensity difference cues to localize sound was assessed in free-field localization tests by using pure tones. The animals were required to discriminate the locus of a single tone pip ranging in frequency from 250 Hz to 25 kHz emitted by loudspeakers located 30 degrees to the left and right of the animals' midline (60 degrees total separation). Three animals were tested with a two-choice procedure; 2 additional animals were tested with a conditioned avoidance procedure. All 5 animals were able to localize 250 Hz, 500 Hz, and 1 kHz but were complet...
Sound localization in large mammals: localization of complex sounds by horses. The idea that large mammals localize sounds more accurately than small mammals has been noted frequently and is usually explained by reference to their large interaural distance and the correspondingly broad binaural time (delta t) and spectral (delta fi) differences between their two ears. Sound-localization thresholds for single clicks and 100-ms noise bursts were determined for horses, and the magnitude of the binaural time (delta t) and spectral (delta fi) cues for sound direction were measured on a horse. Although horses have relatively large interaural distances and physically broad bina...
