A COMPARATIVE APPROACH TO VOCAL LEARNING - SONG DEVELOPMENT IN WHITE-CROWNED SPARROWS
A COMPARATIVE APPROACH TO VOCAL LEARNING - SONG DEVELOPMENT IN WHITE-CROWNED SPARROWS
复制标题
DOI:
10.1037/h0029144
复制
发表时间:
1970-01-01
期刊:
影响因子:
--
通讯作者:
MARLER, P
中科院分区:
文献类型:
--
作者:
MARLER, P
Unlike nonhuman primates and some other species used in attempts to condition vocal behavior, certain song birds display considerable facility at vocal imitation in the wild state. Species-specific characteristics of the song of the male white-crowned sparrow are normally acquired by learning from adults. Local song dialects result. Males raised in individual or group isolation developed abnormal songs. Exposure to normal song during a critical period of 10-50 days of age resulted in normal song development and in reproduction of the particular training dialect. Exposure to normal song during the 50-100 day age period shifted subsequent song development in a normal direction, but details of the training song were not reproduced. Exposure before 10 days and after 100 days of age had no effect. Song learning is selective in that exposure to songs of other species of 10-50 days of age had no effect on song development. Sensory rather than motor constraints appear to be responsible for the selectivity. To explain song development, an auditory template is postulated. At the start of the critical period the template is only a crude specification of normal song, but sufficient to exclude songs of other species. In training the specifications of the template become more precise. Vocalizations are matched to the template subsequently by auditory feedback. No extrinsic reinforcement seems to be necessary. Several analogies are drawn between song learning in white-crowned sparrows and speech development in children.(65 ref.)(PsycINFO Database Record (c) 2016 APA, all rights reserved)