title: Time-frequency analysis of temporomandibular joint (TMJ) clicking sounds using radially Gaussian Kernels.
abstract: Temporomandibular joint (TMJ) sounds and motion were recorded during two clinically-derived movements--simple jaw opening and jaw protrusion followed by opening--from ten patients. A new time-frequency method--radially Gaussian kernel distribution--was applied to classify the TMJ clicking sounds into six groups, type I to type VI, based on the time-frequency patterns of energy distribution. The number of clicks and percentage of each type were examined. Relations between the two movements were examined by the prevalence of each type. A detailed classification of TMJ clicking sounds is provided by time-frequency patterns and may provide a better understanding of temporomandibular disorders.
authors.affiliation: Department of Electrical Engineering, University of Pittsburgh, PA 15261, USA. syoo@siglab.ee.pitt.edu
authors.forename: S
authors.initials: S
authors.lastname: Yoo
authors.forename: J R
authors.initials: JR
authors.lastname: Boston
authors.forename: T E
authors.initials: TE
authors.lastname: Rudy
authors.forename: C M
authors.initials: CM
authors.lastname: Greco
authors.forename: J K
authors.initials: JK
authors.lastname: Leader
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013705:Temporomandibular Joint Disorders / Q000145:classification / Q000503:physiopathology*; D014743:Videotape Recording