Document Detail

Anticipation and motor control on repetitive tooth tapping produced by open-close jaw movements.
MedLine Citation:
PMID:  18190357     Owner:  NLM     Status:  MEDLINE    
This study was designed to evaluate the relationship between the temporal anticipation effects and motor control on repetitive tooth tapping movements (tooth tapping produced by open-close jaw movements) commanded by six frequencies of acoustic signals. Ten dentulous young adults were asked to perform tooth tapping movements to acoustic command signals at constant frequencies of 0.3, 0.8, 1.3, 1.8, 2.3 and 2.8 Hz. Surface electromyograms of the Masseter muscles, vertical component of the Mandibular kinesiograph, and acoustic signals were simultaneously recorded. Some parameters were measured for tappings at the last signal (TL) and surplus tappings without signals after the last signal (TL(n)) in each frequency command signal. The results showed that changes in the strategy for tapping movement controls occurred between 0.3 and 0.8 Hz. Between 0.8 and 2.8 Hz, each tooth tapping was automatically initiated before the confirmation of the signal; initiation and control of repetitive tapping movements were apparently based on effector anticipation (predicting the duration of internal processes for a planned movement so that it can be made coincidental to some anticipated external event) and receptor anticipation (anticipation of the arrival of a stimulus due to sensory information about its time of arrival). However, at 0.3 Hz, the movement initiation was delayed, such that each tooth tapping was initiated after the confirmation of the signal. Therefore, tappings at 0.3 Hz showed less dependence on receptor anticipation. These changes in motor control strategy are considered to be a reasonable way to prevent incorrect movements and to minimize erroneous movements.
K Noguchi; H Fujii; Y Yamabe; M Tanaka; A Shimada; T Torisu; H Suenaga
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of oral rehabilitation     Volume:  35     ISSN:  0305-182X     ISO Abbreviation:  J Oral Rehabil     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2008-01-14     Completed Date:  2008-05-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0433604     Medline TA:  J Oral Rehabil     Country:  England    
Other Details:
Languages:  eng     Pagination:  20-6     Citation Subset:  D; IM    
Department of Prosthetic Dentistry, Department of Developmental and Reconstructive Medicine, Course of Medical and Dental Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
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MeSH Terms
Acoustic Stimulation / methods
Dental Occlusion*
Feedback / physiology
Masseter Muscle / physiology
Mastication / physiology*
Movement / physiology*
Psychomotor Performance / physiology*
Temporomandibular Joint / physiology*

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