PhD Defense by Regan Lawson

Event Details
  • Date/Time:
    • Monday October 23, 2017
      8:30 am - 10:30 am
  • Location: 555 Fourteenth Street, NW, Room 1253
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Summaries

Summary Sentence: Neurobehavioral Quantification of Transition to Explicit Awareness in Skilled Motor Learning: Implications for Rehabilitation:

Full Summary: No summary paragraph submitted.

In partial fulfillment of the Requirements for the Degree of 

 

Doctor of Philosophy in Applied Physiology

in the 

School of Biological Sciences

 

Regan R. Lawson

 

will defend her thesis 

 

“Neurobehavioral Quantification of Transition to Explicit Awareness in Skilled Motor Learning:

Implications for Rehabilitation”

 

 

Monday, October 23, 2017

8:30 AM

555 Fourteenth Street, NW, Room 1253

 

Thesis Advisor

Lewis Wheaton, PhD

School of Biological Sciences

 

Committee Members

Mindy Millard-Stafford, PhD (Biological Sciences)

Boris Prilutsky, PhD (Biological Sciences)

Teresa Snow, PhD (Biological Sciences)

Steven Wolf, PhD (Biological Sciences)

 

 

Neurobehavioral Quantification of Transition to Explicit Awareness in Skilled Motor Learning:

Implications for Rehabilitation

 

We often take for granted the ability to learn and execute sequential movements in a smooth, automatic manner on a continual daily basis. Unfortunately, many patient populations exhibit deficits in motor learning, impairing the ability to develop such sequential motor skills. Understanding the individual neural progression associated with sequential learning in healthy individuals may provide valuable insights of motor learning as well as identify factors that can impede learning. Recent studies have indicated potential therapeutic benefits to the incidental development of explicit awareness during a motor learning task, but have not addressed the potential confound of variability in individual learning rates. We identified an individualized indicator of incidentally developed explicit awareness to more precisely examine the neurobehavioral changes associated with sequential motor learning to a level of explicit awareness. EEG results revealed the presence of a facilitative frontoparietal network for subjects demonstrating awareness, that was not present for those failing to develop awareness. Additional neurobehavioral correlations provided evidence for the impact of working memory on the ability to acquire initial explicit awareness, and the impact of learning strategy on the ability to successfully transfer the newly learned skill to a novel, more complex motor task. Finally, a multimodal approach examined eye-tracking, kinematics and neural activity changes for prosthesis users and intact control subjects when learning a sequential motor task. Prosthesis users demonstrated neurobehavioral patterns reflective of enhanced visual reliance for motor control, impacting motor learning progression. It was additionally noted that prosthesis users developing awareness appeared to engage in behaviors which introduced additional sensorimotor information relevant to motor learning. The individualized approach in the presented work provide insight into rehabilitative interventions with which to assist individuals experiencing motor learning deficits.

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In Campus Calendar
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Graduate Studies

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Keywords
Phd Defense
Status
  • Created By: Tatianna Richardson
  • Workflow Status: Published
  • Created On: Oct 13, 2017 - 11:06am
  • Last Updated: Oct 13, 2017 - 11:06am