INTRODUCTION Normative data for jitter parameters using a disposable concentric needle have been described in a few studies. METHODS Jitter, expressed as the mean consecutive difference (MCD), was measured in the frontalis muscle in 20 subjects by voluntary contraction. RESULTS Mean MCD for individual studies (20, gaussian), all potentials (400, non-gaussian), and 18th highest value (20, ga...

Botulinum toxin type A (BoNT-A) has been reported as an effective treatment for chronic migraine. When BoNT-A is injected on the frontalis muscle for chronic migraine, an unexpected clinical side effect called the "Mephisto sign" may occur. The aim of this article is to propose a method to eliminate or prevent the Mephisto sign side effect. A 25-year-old female patient visited the hospital and ...

BACKGROUND We previously reported that the supratarsal Mueller's muscle is innervated by both sympathetic efferent fibers and trigeminal proprioceptive afferent fibers, which function as mechanoreceptors-inducing reflexive contractions of both the levator and frontalis muscles. Controversy still persists regarding the role of the mechanoreceptors in Mueller's muscle; therefore, we clinically an...

The aim of the present study was to find out efficacy of frontalis EMG Biofeedback therapy, deep muscular relaxation therapy and compare the efficacy of both in cases of tension headache. During two week basal-data recording period all patients were taught deep muscular relaxation by Jacobson's technique. Simultaneously patients were instructed to keep headache diary. Headache diary yielded thr...

OBJECTIVE The mixed levator and frontalis muscles lack the interior muscle spindles normally required to induce involuntary contraction of their slow-twitch fibers. To involuntarily move the eyelid and eyebrow, voluntary contraction of the levator nonskeletal fast-twitch muscle fibers stretches the mechanoreceptors in Müller's muscle to evoke trigeminal proprioception, which then induces reflex...

In recent years, a great amount of interest has been generated by the potential treatment application of biofeedback techniques in vaiious psychosomatic disorders. The possibility of using it in the treatment of tension headache was first advanced by Budzynski et al. (1970). Subsequently various workers demonstrated a similar encouraging result in uncontrolled studies (Wickramasekera, 1972 ; Mc...

Behavioral Relaxation Training (BRT), a set of ten overt behaviors directly taught by prompting and performance feedback, was compared with frontalis EMG Biofeedback (BIO), Progressive Muscle Relaxation (PMR), and a Music "attention focusing" (MUS) control, on five dependent measures of relaxation, in four groups of volunteers for a "stress-reduction" project. The dependent measures consisted o...

Frontalis suspension is a commonly used surgery that is indicated in patients with blepharoptosis and poor levator muscle function. The surgery is based on connecting the tarsal plate to the eyebrow with various sling materials. Although fascia lata is most commonly used due to its long-lasting effect and low rate of complications, it has several limitations such as difficulty of harvesting, in...