title: Masseter silent period: a study of magnetic stimulation.
abstract: We employed magnetic stimulation to study the masseter silent period (SP) in 16 healthy volunteers. Cutaneous perception threshold (CPT or 1 T) was determined. SP threshold was 30% M (maximal output) in each subject, equivalent to 1.5-3 T, and as intensity increased, SP durations prolonged. The correlation was higher with units of % M (r = 0.89) than CPT (r = 0.39). The recommended intensity was 60% M because of least variation of SP durations. Conclusively, magnetic stimulation is a new and painless method to study masseter SP. CPT is less effective in studying masseter SP with magnetic stimulation as the input effectiveness correlates best with % M rather than CPT.
authors.affiliation: Neurological Institute, Veterans General Hospital-Taipei, Peitou, Taiwan.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Lin
authors.forename: K K
authors.initials: KK
authors.lastname: Liao
authors.forename: S J
authors.initials: SJ
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Tang
authors.forename: C P
authors.initials: CP
authors.lastname: Tsai
authors.forename: Z A
authors.initials: ZA
authors.lastname: Wu
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D004576:Electromyography; D005260:Female; D006801:Humans; D008280:Magnetics; D008297:Male; D008406:Masseter Muscle / Q000502:physiology*; D008875:Middle Aged; D010465:Perception / Q000502:physiology; D011930:Reaction Time / Q000502:physiology