The Jaw Jerk in Normal Young Adults.
- Author:
Eun Young KANG
1
;
Min Gyu CHO
;
Hyun Kyung LEE
;
Pyeung Sik JEON
;
Sung Hun LEE
Author Information
1. Department of Rehabilitation Medicine, Kwangju Christian Hospital, Korea.
- Publication Type:Original Article
- Keywords:
Jaw jerk;
Gender;
Masseter;
Parameters
- MeSH:
Chin;
Female;
Humans;
Jaw*;
Korea;
Male;
Masseter Muscle;
Young Adult*
- From:Journal of the Korean Academy of Rehabilitation Medicine
2001;25(6):973-979
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: To obtain the mean value of parameters of the jaw jerk and to investigate gender difference on the jaw jerk in normal young adults in Korea. METHOD: In young 40 subjects (20 males and 20 females), the jaw jerks were elicited by chin tapping in the relaxed masseter muscles of both sides. RESULTS: The jaw jerks were recorded in 100% of the total number of chin-taps. The mean latency was 5.39 ms in the males and 5.14 ms in the females (p>0.05). The mean amplitude was 0.75 mV in the males and 0.59 mV in the females (p>0.05). The mean duration was 8.18 ms in the males and 7.85 ms in the females (p>0.05). CONCLUSION: No significant differences were found in the parameters of the jaw jerk between males and females in this study.
