title: Stress-related electromyographic responses in patients with chronic temporomandibular pain.
abstract: Surface electromyographic (EMG) recordings from the right and left masseter and the left biceps muscle during stress and non-stress imagery were obtained from patients with temporomandibular myofascial pain and dysfunction syndrome (MPDS), temporomandibular joint disorder (TMJD), chronic low back pain (CBP) and healthy controls (HC). Both the MPDS and the TMJD groups displayed significantly more masseter EMG reactivity to the stressful imagery than the CBP and HC groups. The 2 dental groups did not differ significantly from each other. The MPDS patients indicated more life stress and gave higher aversiveness ratings during the experiment. These findings are discussed with respect to the validity of the TMJD and MPDS distinction.
authors.affiliation: Department of Clinical and Physiological Psychology, University of Tübingen, TübingenF.R.G. Dipartimento di Psicologia Generale Universita Degli Studi, PadovaItaly Outpatient Department of Oral Surgery and Paradontology, Dental Center, University of Tübingen, TübingenF.R.G.
authors.forename: Herta
authors.initials: H
authors.lastname: Flor
authors.forename: Niels
authors.initials: N
authors.lastname: Birbaumer
authors.forename: Willi
authors.initials: W
authors.lastname: Schulte
authors.forename: Rainer
authors.initials: R
authors.lastname: Roos
mesh_terms: D000293:Adolescent; D000328:Adult; D001416:Back Pain / Q000503:physiopathology / Q000523:psychology; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008406:Masseter Muscle / Q000503:physiopathology; D008875:Middle Aged; D010147:Pain Measurement; D011569:Psychiatric Status Rating Scales; D013315:Stress, Psychological / Q000503:physiopathology* / Q000523:psychology; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology* / Q000523:psychology; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000503:physiopathology* / Q000523:psychology; D014070:Tooth / Q000473:pathology