{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,5]],"date-time":"2024-09-05T18:46:39Z","timestamp":1725561999709},"reference-count":33,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2004,8,2]],"date-time":"2004-08-02T00:00:00Z","timestamp":1091404800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Neurobiol."],"published-print":{"date-parts":[[2004,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The crystallized structure of adult zebra finch (<jats:italic>Taeniopygia guttata<\/jats:italic>) 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\u2013120 days or middle aged 150\u2013250 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., \u201cpartial muting\u201d). 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 (&lt;125 ms) expiratory pulses (EPs) into the motif than middle\u2010aged 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 EP of the distance call, which is also a learned vocalization in zebra finches, showed a similar reduction in duration if EPs were also shortened in the song. The emergence of shorter duration EPs was not related to sound production, or nonspecific effects of the surgical procedure, which suggests an age\u2010dependent neural process for song plasticity. \u00a9 2004 Wiley Periodicals, Inc. J Neurobiol, 2004<\/jats:p>","DOI":"10.1002\/neu.20062","type":"journal-article","created":{"date-parts":[[2004,8,3]],"date-time":"2004-08-03T07:01:34Z","timestamp":1091516494000},"page":"317-332","source":"Crossref","is-referenced-by-count":16,"title":["Partial muting leads to age\u2010dependent modification of motor patterns underlying crystallized zebra finch song"],"prefix":"10.1002","volume":"61","author":[{"given":"Brenton G.","family":"Cooper","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Franz","family":"Goller","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2004,8,2]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"crossref","first-page":"2387","DOI":"10.1523\/JNEUROSCI.04-09-02387.1984","article-title":"The role of feedback from the vocal organ. I. 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