Birdsong neurolinguistics: songbird context-free grammar claim is premature
There are remarkable behavioral, neural, and genetic similarities between song learning in songbirds and speech acquisition in human infants. Previously, we have argued that this parallel cannot be extended to the level of sentence syntax. Although birdsong can indeed have a complex structure, it la...
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Veröffentlicht in: | Neuroreport 2012-02, Vol.23 (3), p.139-145 |
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description | There are remarkable behavioral, neural, and genetic similarities between song learning in songbirds and speech acquisition in human infants. Previously, we have argued that this parallel cannot be extended to the level of sentence syntax. Although birdsong can indeed have a complex structure, it lacks the combinatorial complexity of human language syntax. Recently, this conclusion has been challenged by a report purporting to show that songbirds can learn so-called context-free syntactic rules and then use them to discriminate particular syllable patterns. Here, we demonstrate that the design of this study is inadequate to draw such a conclusion, and offer alternative explanations for the experimental results that do not require the acquisition and use of context-free grammar rules or a grammar of any kind, only the simpler hypothesis of acoustic similarity matching. We conclude that the evolution of vocal learning involves both neural homologies and behavioral convergence, and that human language reflects a unique cognitive capacity. |
doi_str_mv | 10.1097/WNR.0b013e32834f1765 |
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subjects | Anatomical correlates of behavior Animals Auditory Perception - physiology Behavioral psychophysiology Biological and medical sciences Biological Evolution Brain - physiology Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation Fundamental and applied biological sciences. Psychology Humans Infant Learning - physiology Linguistics Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Songbirds - physiology Speech - physiology Vertebrates: nervous system and sense organs Vocalization, Animal - physiology |
title | Birdsong neurolinguistics: songbird context-free grammar claim is premature |
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