Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches
Like human infants, songbirds acquire their song by imitation and eventually generate sounds that result from complicated neural networks and intrinsically nonlinear physical processes. Signatures of low-dimensional chaos such as subharmonic bifurcations have been reported in adult and developing ze...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02706474_v30_n40_p13246_Elemans |
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todo:paper_02706474_v30_n40_p13246_Elemans2023-10-03T15:14:41Z Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches Elemans, C.P.H. Laje, R. Mindlin, G.B. Goller, F. acoustics animal experiment article brain function controlled study finch male mechanics motor control nonhuman nonlinear system premotor cortex priority journal songbird sound detection Taenopygia guttata telencephalon vocal cord vocalization Acoustics Age Factors Animals Behavior, Animal Brain Efferent Pathways Finches Laryngeal Muscles Larynx Male Nonlinear Dynamics Psychomotor Performance Signal Processing, Computer-Assisted Sound Sound Spectrography Vocalization, Animal Like human infants, songbirds acquire their song by imitation and eventually generate sounds that result from complicated neural networks and intrinsically nonlinear physical processes. Signatures of low-dimensional chaos such as subharmonic bifurcations have been reported in adult and developing zebra finch song. Here, we use methods from nonlinear dynamics to test whether adult male zebra finches (Taenopygia guttata) use the intrinsic nonlinear properties of their vocal organ, the syrinx, to insert subharmonic transitions in their song. In contrast to previous dataonthe basis of spectrographic evidence, we show that subharmonic transitions do not occur in adult song. Subharmonic transitions also do not arise in artificially induced sound in the intact syrinx, but are commonly generated in the excised syrinx. These findings suggest that subharmonic transitions are not used to increase song complexity, and that the brain controls song in a surprisingly smooth control regimen. Fast, smooth changes in acoustic elements can be produced by direct motor control in a stereotyped fashion, which is amorereliable indicator of male fitness than abrupt acoustic changes that do not require similarly precise control. Consistent with this view is the presence of high fidelity at every level of motor control, from telencephalic premotor areas to superfast syringeal muscles. Copyright © 2010 the authors. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02706474_v30_n40_p13246_Elemans |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
acoustics animal experiment article brain function controlled study finch male mechanics motor control nonhuman nonlinear system premotor cortex priority journal songbird sound detection Taenopygia guttata telencephalon vocal cord vocalization Acoustics Age Factors Animals Behavior, Animal Brain Efferent Pathways Finches Laryngeal Muscles Larynx Male Nonlinear Dynamics Psychomotor Performance Signal Processing, Computer-Assisted Sound Sound Spectrography Vocalization, Animal |
| spellingShingle |
acoustics animal experiment article brain function controlled study finch male mechanics motor control nonhuman nonlinear system premotor cortex priority journal songbird sound detection Taenopygia guttata telencephalon vocal cord vocalization Acoustics Age Factors Animals Behavior, Animal Brain Efferent Pathways Finches Laryngeal Muscles Larynx Male Nonlinear Dynamics Psychomotor Performance Signal Processing, Computer-Assisted Sound Sound Spectrography Vocalization, Animal Elemans, C.P.H. Laje, R. Mindlin, G.B. Goller, F. Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| topic_facet |
acoustics animal experiment article brain function controlled study finch male mechanics motor control nonhuman nonlinear system premotor cortex priority journal songbird sound detection Taenopygia guttata telencephalon vocal cord vocalization Acoustics Age Factors Animals Behavior, Animal Brain Efferent Pathways Finches Laryngeal Muscles Larynx Male Nonlinear Dynamics Psychomotor Performance Signal Processing, Computer-Assisted Sound Sound Spectrography Vocalization, Animal |
| description |
Like human infants, songbirds acquire their song by imitation and eventually generate sounds that result from complicated neural networks and intrinsically nonlinear physical processes. Signatures of low-dimensional chaos such as subharmonic bifurcations have been reported in adult and developing zebra finch song. Here, we use methods from nonlinear dynamics to test whether adult male zebra finches (Taenopygia guttata) use the intrinsic nonlinear properties of their vocal organ, the syrinx, to insert subharmonic transitions in their song. In contrast to previous dataonthe basis of spectrographic evidence, we show that subharmonic transitions do not occur in adult song. Subharmonic transitions also do not arise in artificially induced sound in the intact syrinx, but are commonly generated in the excised syrinx. These findings suggest that subharmonic transitions are not used to increase song complexity, and that the brain controls song in a surprisingly smooth control regimen. Fast, smooth changes in acoustic elements can be produced by direct motor control in a stereotyped fashion, which is amorereliable indicator of male fitness than abrupt acoustic changes that do not require similarly precise control. Consistent with this view is the presence of high fidelity at every level of motor control, from telencephalic premotor areas to superfast syringeal muscles. Copyright © 2010 the authors. |
| format |
JOUR |
| author |
Elemans, C.P.H. Laje, R. Mindlin, G.B. Goller, F. |
| author_facet |
Elemans, C.P.H. Laje, R. Mindlin, G.B. Goller, F. |
| author_sort |
Elemans, C.P.H. |
| title |
Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| title_short |
Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| title_full |
Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| title_fullStr |
Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| title_full_unstemmed |
Smooth operator: Avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| title_sort |
smooth operator: avoidance of subharmonic bifurcations through mechanical mechanisms simplifies song motor control in adult zebra finches |
| url |
http://hdl.handle.net/20.500.12110/paper_02706474_v30_n40_p13246_Elemans |
| work_keys_str_mv |
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| _version_ |
1807324536730812416 |