Spectral cues and temporal integration during cylinder echo discrimination by bottlenose dolphins (Tursiops truncatus).
J Acoust Soc Am
; 148(2): 614, 2020 08.
Article
em En
| MEDLINE
| ID: mdl-32872984
ABSTRACT
Three bottlenose dolphins (Tursiops truncatus) participated in simulated cylinder wall thickness discrimination tasks utilizing electronic "phantom" echoes. The first experiment resulted in psychometric functions (percent correct vs wall thickness difference) similar to those produced by a dolphin performing the task with physical cylinders. In the second experiment, a wide range of cylinder echoes was simulated, with the time separation between echo highlights covering a range from <30 to >300 µs. Dolphin performance and a model of the dolphin auditory periphery suggest that the dolphins used high-frequency, spectral-profiles of the echoes for discrimination and that the utility of spectral cues degraded when the time separation between echo highlights approached and exceeded the dolphin's temporal integration time of â¼264 µs.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ecolocação
/
Golfinho Nariz-de-Garrafa
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
J Acoust Soc Am
Ano de publicação:
2020
Tipo de documento:
Article