Impacts of Semantic Priming During A Whole-Body Locomotor Task

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Material Information

Title:
Impacts of Semantic Priming During A Whole-Body Locomotor Task
Physical Description:
1 online resource (52 p.)
Language:
english
Creator:
Elrod, Jonathan M
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Master's ( M.S.)
Degree Grantor:
University of Florida
Degree Disciplines:
Applied Physiology and Kinesiology
Committee Chair:
HASS,CHRISTOPHER J
Committee Co-Chair:
TILLMAN,MARK D
Committee Members:
ALTMANN,LORI J

Subjects

Subjects / Keywords:
initiation -- locomotion -- modulation -- semantic
Applied Physiology and Kinesiology -- Dissertations, Academic -- UF
Genre:
Applied Physiology and Kinesiology thesis, M.S.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
Semantic memory is used to store knowledge related to meaning of concepts, actions, and words gained through experiences. Investigations into the organization of semantic memory have revealed that processing of action words elicits activation of motor and premotor cortices; representing a critical linkage between the language and motor systems. Research investigations in aging and neurologically impaired populations have aimed to develop strategies to compensate for performance declines in locomotor tasks. The priming effect that has be observed by the processing of action words may enhance performance on gross motor actions and serve as a viable internally generated cueing strategy. Therefore the purpose of this study was to examine the effects of semantic priming on the initiation of gait. Twenty-one healthy, young adult volunteers initiated gait under four experimental conditions: one non-primed condition and three semantically primed conditions. The priming conditions used both external and internally generated word primes, requiring varying degrees of cognitive processing. Performance in the locomotor task was assessed within each condition by measuring reaction time, spatiotemporal characteristics of gait, and using ground reaction forces and moments to calculate the location of the instantaneous center of pressure. The findings of this study indicated that semantic processing of word primes can facilitate the execution of the motor program controlling gait initiation, regardless of word form. Although there was a rapid release of the motor program, perception of action-related word primes interfered with the motor program. Finally as spatiotemporal characteristics of stepping showed no improvement, it is our conclusion that capitalizing upon the proposed linkage between the language and motor systems does not represent a viable cueing strategy.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Jonathan M Elrod.
Thesis:
Thesis (M.S.)--University of Florida, 2014.
Local:
Adviser: HASS,CHRISTOPHER J.
Local:
Co-adviser: TILLMAN,MARK D.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2016-05-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2014
System ID:
UFE0046857:00001