Use of binaural cues for sound localization in large and small non-echolocating bats: Eidolon helvum and Cynopterus brachyotis.
J Acoust Soc Am
; 127(6): 3837-45, 2010 Jun.
Article
em En
| MEDLINE
| ID: mdl-20550282
ABSTRACT
The authors determined the ability of two old-world non-echolocating bats, Eidolon helvum and Cynopterus brachyotis, to use binaural time and intensity difference cues for localization. The bats were trained to localize pure tones throughout most of their hearing range from loudspeakers located 30 degrees to the left and right of midline. Both species easily localized high frequency tones, indicating they could use the interaural intensity difference cue. However, neither was able to localize low frequency tones even when the tones were amplitude modulated thereby indicating that they could not use ongoing phase difference cues. The authors now know of eight mammals that do not use binaural phase cues for localization, and some possible reasons for this inability are explored.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Localização de Som
/
Quirópteros
/
Sinais (Psicologia)
Limite:
Animals
Idioma:
En
Revista:
J Acoust Soc Am
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos