Temperature induced syllable breaking unveils nonlinearly interacting timescales in birdsong motor pathway.

Temperature induced syllable breaking unveils nonlinearly interacting timescales in birdsong motor pathway.
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DOI:
10.1371/journal.pone.0067814
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Mindlin GB
Mindlin GB
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Goldin MA;Alonso LM;Alliende JA;Goller F;Mindlin GB

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The nature of telencephalic control over premotor and motor circuits is debated. Hypotheses range from complete usurping of downstream circuitry to highly interactive mechanisms of control. We show theoretically and experimentally, that telencephalic song motor control in canaries is consistent with a highly interactive strategy. As predicted from a theoretical model of respiratory control, mild cooling of a forebrain nucleus (HVC) led to song stretching, but further cooling caused progressive restructuring of song, consistent with the hypothesis that respiratory gestures are subharmonic responses to a timescale present in the output of HVC. This interaction between a life-sustaining motor function (respiration) and telencephalic song motor control suggests a more general mechanism of how nonlinear integration of evolutionarily new brain structures into existing circuitry gives rise to diverse, new behavior.
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