TY - JOUR
T1 - Voicing judgements by chinchillas trained with a reward paradigm
AU - Ohlemiller, Kevin K.
AU - Jones, Leifann B.
AU - Heidbreder, Arnold F.
AU - Clark, William W.
AU - Miller, James D.
N1 - Funding Information:
We thank our reviewers for their insights and patience. R. Uchanski also provided helpful comments. Thanks also to D. Sinex for help with stimulus generation and C. Prosen for guidance on the experimental paradigm. This study was funded by the J.S. McDonnell Foundation.
PY - 1999/4/1
Y1 - 1999/4/1
N2 - Experiments were performed to replicate and extend previous findings of similar categorization of voiced/voiceless consonant-vowel (CV) syllables by humans and chinchillas. A reward paradigm was applied to the question of how stimulus range affects the voice-onset-time (VAT) corresponding to the voiced/voiceless category boundary. Each of four adult chinchillas and four human subjects identified synthetic CV syllables as voiced (/ba/, /da/, /ga/) or voiceless (/pa/, /ta/, /ka/) using voiceless standards of either 80 or 120 ms. In both humans and animals, extending the VaT range from 80 to 120 ms shifted category boundaries to longer VaTs, but to a different extent across listeners. Control experiments suggested that listeners were attending to different phonetic cues in a manner that depended on the listener, rather than on species. The results are interpreted in terms of similar contextual effects and use of multiple phonetic cues to voicing in humans and animals.
AB - Experiments were performed to replicate and extend previous findings of similar categorization of voiced/voiceless consonant-vowel (CV) syllables by humans and chinchillas. A reward paradigm was applied to the question of how stimulus range affects the voice-onset-time (VAT) corresponding to the voiced/voiceless category boundary. Each of four adult chinchillas and four human subjects identified synthetic CV syllables as voiced (/ba/, /da/, /ga/) or voiceless (/pa/, /ta/, /ka/) using voiceless standards of either 80 or 120 ms. In both humans and animals, extending the VaT range from 80 to 120 ms shifted category boundaries to longer VaTs, but to a different extent across listeners. Control experiments suggested that listeners were attending to different phonetic cues in a manner that depended on the listener, rather than on species. The results are interpreted in terms of similar contextual effects and use of multiple phonetic cues to voicing in humans and animals.
KW - Auditory communication
KW - Categorical perception
KW - Speech perception
UR - http://www.scopus.com/inward/record.url?scp=0032994269&partnerID=8YFLogxK
U2 - 10.1016/S0166-4328(98)00130-2
DO - 10.1016/S0166-4328(98)00130-2
M3 - Article
C2 - 10212066
AN - SCOPUS:0032994269
SN - 0166-4328
VL - 100
SP - 185
EP - 195
JO - Behavioural Brain Research
JF - Behavioural Brain Research
IS - 1-2
ER -