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Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat

We present and apply a method that uses point process statistics to discriminate the forms of synergies in motor pattern data, prior to explicit synergy extraction. The method uses electromyogram (EMG) pulse peak timing or onset timing. Peak timing is preferable in complex patterns where pulse onset...

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Detalles Bibliográficos
Autores principales: Hart, Corey B., Giszter, Simon F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3648693/
https://www.ncbi.nlm.nih.gov/pubmed/23675341
http://dx.doi.org/10.3389/fncom.2013.00052
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author Hart, Corey B.
Giszter, Simon F.
author_facet Hart, Corey B.
Giszter, Simon F.
author_sort Hart, Corey B.
collection PubMed
description We present and apply a method that uses point process statistics to discriminate the forms of synergies in motor pattern data, prior to explicit synergy extraction. The method uses electromyogram (EMG) pulse peak timing or onset timing. Peak timing is preferable in complex patterns where pulse onsets may be overlapping. An interval statistic derived from the point processes of EMG peak timings distinguishes time-varying synergies from synchronous synergies (SS). Model data shows that the statistic is robust for most conditions. Its application to both frog hindlimb EMG and rat locomotion hindlimb EMG show data from these preparations is clearly most consistent with synchronous synergy models (p < 0.001). Additional direct tests of pulse and interval relations in frog data further bolster the support for synchronous synergy mechanisms in these data. Our method and analyses support separated control of rhythm and pattern of motor primitives, with the low level execution primitives comprising pulsed SS in both frog and rat, and both episodic and rhythmic behaviors.
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spelling pubmed-36486932013-05-14 Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat Hart, Corey B. Giszter, Simon F. Front Comput Neurosci Neuroscience We present and apply a method that uses point process statistics to discriminate the forms of synergies in motor pattern data, prior to explicit synergy extraction. The method uses electromyogram (EMG) pulse peak timing or onset timing. Peak timing is preferable in complex patterns where pulse onsets may be overlapping. An interval statistic derived from the point processes of EMG peak timings distinguishes time-varying synergies from synchronous synergies (SS). Model data shows that the statistic is robust for most conditions. Its application to both frog hindlimb EMG and rat locomotion hindlimb EMG show data from these preparations is clearly most consistent with synchronous synergy models (p < 0.001). Additional direct tests of pulse and interval relations in frog data further bolster the support for synchronous synergy mechanisms in these data. Our method and analyses support separated control of rhythm and pattern of motor primitives, with the low level execution primitives comprising pulsed SS in both frog and rat, and both episodic and rhythmic behaviors. Frontiers Media S.A. 2013-05-09 /pmc/articles/PMC3648693/ /pubmed/23675341 http://dx.doi.org/10.3389/fncom.2013.00052 Text en Copyright © 2013 Hart and Giszter. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.
spellingShingle Neuroscience
Hart, Corey B.
Giszter, Simon F.
Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
title Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
title_full Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
title_fullStr Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
title_full_unstemmed Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
title_short Distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
title_sort distinguishing synchronous and time-varying synergies using point process interval statistics: motor primitives in frog and rat
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3648693/
https://www.ncbi.nlm.nih.gov/pubmed/23675341
http://dx.doi.org/10.3389/fncom.2013.00052
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