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The influence of gender on the masseter electromyographic jaw‐jerk reflex in young human subjects
Author(s) -
KOSSIONI A.E.,
KARKAZIS H.C.
Publication year - 1994
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1994.tb01156.x
Subject(s) - jaw jerk reflex , chin , masseter muscle , reflex , jerk , medicine , electromyography , ankle jerk reflex , orthodontics , audiology , anatomy , physical medicine and rehabilitation , anesthesia , physics , classical mechanics , acceleration
Summary The purpose of this study was to investigate the effect of gender on the masseteric jaw‐jerk reflex, evoked in a sample of nine male and nine female young subjects. Electromyographic jaw‐jerk recordings elicited by chin‐taps in the relaxed masseter muscle of the preferred chewing side, were obtained using a computerized recording and analysis system. In both groups, a jaw‐jerk reflex was recorded in 95.56% out of the total number of chin‐taps. The mean latency was significantly shorter in the females (5.75 ms) than in the males (6.14ms, P = 0.0045), while the amplitude of the reflex was significantly higher in the females ( P = 0.0005). No significant differences were found in the mean duration between males (6.86ms) and females (6.73ms). It was concluded that sex variation should be taken into consideration in the interpretation of the jaw‐jerk reflex.