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Biologically-based functional mechan...

Shah, Ashvin.

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Biologically-based functional mechanisms of motor skill acquisition.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Biologically-based functional mechanisms of motor skill acquisition./
作者:	Shah, Ashvin.
面頁冊數:	241 p.
附註:	Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7325.
Contained By:	Dissertation Abstracts International69-12B.
標題:	Biology, Neuroscience. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3337030
ISBN:	9780549916178

Biologically-based functional mechanisms of motor skill acquisition.
Shah, Ashvin.

Biologically-based functional mechanisms of motor skill acquisition. - 241 p.

Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7325.

Thesis (Ph.D.)--University of Massachusetts Amherst, 2008.

The adage practice makes perfect makes for sound advice when learning a novel motor skill. Be it typing a new password or hitting a forehand in tennis, proficiency increases with experience. Behavioral changes associated with motor skill acquisition can be broken down into three broad categories: (1) movements are executed faster and become more coordinated, (2) they come to rely on sensory information gained while executing the task, rather than just sensory information used during initial stages of learning the task, and (3) they seem to be executed with less conscious thought and attention. In addition, neural activity changes: many imaging and neural recording studies suggest that with experience, control is transferred from cortical planning areas to the basal ganglia. The two areas are thought to employ different learning and control schemes. In general, planning can quickly take new information into account to make reasonable decisions, but its control mechanisms have large computational requirements. The basal ganglia use a simpler and less computationally expensive control scheme, but they require much experience before they can produce reasonable behavior.

ISBN: 9780549916178Subjects--Topical Terms:

1017680
Biology, Neuroscience.

Biologically-based functional mechanisms of motor skill acquisition.
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500 $a Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7325.
500 $a Adviser: Andrew G. Barto.
502 $a Thesis (Ph.D.)--University of Massachusetts Amherst, 2008.
520 $a The adage practice makes perfect makes for sound advice when learning a novel motor skill. Be it typing a new password or hitting a forehand in tennis, proficiency increases with experience. Behavioral changes associated with motor skill acquisition can be broken down into three broad categories: (1) movements are executed faster and become more coordinated, (2) they come to rely on sensory information gained while executing the task, rather than just sensory information used during initial stages of learning the task, and (3) they seem to be executed with less conscious thought and attention. In addition, neural activity changes: many imaging and neural recording studies suggest that with experience, control is transferred from cortical planning areas to the basal ganglia. The two areas are thought to employ different learning and control schemes. In general, planning can quickly take new information into account to make reasonable decisions, but its control mechanisms have large computational requirements. The basal ganglia use a simpler and less computationally expensive control scheme, but they require much experience before they can produce reasonable behavior.
520 $a In this thesis, I contribute to answering the question, "what goes on during practice?" More formally, I am interested in the mechanisms by which motor skills are acquired. I take a theoretical approach in that I hypothesize a multiple controller scheme, based on the learning and control mechanisms of cortical planning areas and the basal ganglia, and test it with simulations designed emulate generic motor skill tasks. Because skill proficiency increases with experience, I am particularly interested in the role of the experience-dependent mechanisms of the basal ganglia in motor skill acquisition. Thus, learning mechanisms attributed to cortical areas are artificially restricted so that any change in model behavior is attributed to the learning mechanisms of the basal ganglia.
520 $a Model behaviors exhibit characteristics indicative of motor skills, supporting the plausibility of the multiple controller scheme as one used by our nervous system and suggesting that the learning mechanisms of the basal ganglia can contribute to developing most characteristics. In addition, I show how the strategies developed by the models are functionally advantageous, providing a reason why such a scheme may be used.
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