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2014 ; 28
(ä): 42-7
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Vocal learning beyond imitation: mechanisms of adaptive vocal development in
songbirds and human infants
#MMPMID25005823
Tchernichovski O
; Marcus G
Curr Opin Neurobiol
2014[Oct]; 28
(ä): 42-7
PMID25005823
show ga
Studies of vocal learning in songbirds typically focus on the acquisition of
sensory templates for song imitation and on the consequent process of matching
song production to templates. However, functional vocal development also requires
the capacity to adaptively diverge from sensory templates, and to flexibly
assemble vocal units. Examples of adaptive divergence include the corrective
imitation of abnormal songs, and the decreased tendency to copy over-abundant
syllables. Such frequency-dependent effects might mirror tradeoffs between the
assimilation of group identity (culture) while establishing individual and
flexibly expressive songs. Intriguingly, although the requirements for vocal
plasticity vary across songbirds, and more so between birdsong and language, the
capacity to flexibly assemble vocal sounds develops in a similar, stepwise manner
across species. Therefore, universal features of vocal learning go well beyond
the capacity to imitate.