Partial muting leads to age-dependent modification of motor patterns underlying crystallized zebra finch song

Journal of Neurobiology
Brenton G Cooper, Franz Goller

Abstract

The crystallized structure of adult zebra finch (Taeniopygia guttata) song is modifiable if sensory feedback is altered during sound production. Such song plasticity has been studied by examining acoustic modifications to the motif; however, the underlying changes to the vocal motor patterns of these acoustic modifications have not been addressed. Adult birds in two age categories (young=90-120 days or middle aged 150-250 days) that sang crystallized song were used in the experiment. Vocal motor patterns were monitored by recording respiratory air sac pressure before, during, and after song plasticity was induced by partial or complete reduction of phonation (i.e., "partial muting"). Birds were recorded until changes in air sac pressure patterns underlying the song structure were observed (up to 160 days). Young adult birds were more likely to insert shorter duration (<125 ms) expiratory pulses (EPs) into the motif than middle-aged adults. These shorter duration EPs were produced with a unique pressure pattern relative to the intact song, and therefore appeared to be generated by novel motor gestures. Stuttering (atypical repetition of an EP) was observed when these novel EPs were inserted into the motif, regardless of age. The...Continue Reading

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Citations

Nov 30, 2010·The Journal of Experimental Biology·Jorge M MéndezFranz Goller
Apr 24, 2007·Behavioural Brain Research·Michael S Smotherman
Jun 24, 2010·Neurobiology of Aging·Brenton G CooperFranz Goller
Jun 28, 2007·Developmental Neurobiology·Carolyn L PytteJohn R Kirn
Mar 24, 2006·Journal of Neurophysiology·Brenton G Cooper, Franz Goller
Mar 5, 2021·Bio-protocol·Yunbok KimSatoshi Kojima
Dec 18, 2007·The Journal of Experimental Biology·Emily Megan Plummer, Franz Goller
Sep 21, 2020··Daisuke MizuguchiSatoshi Kojima

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