Abstract: Disclosed are a method and apparatus for stimulating the masticatory, shoulder, or back, and facial muscles. This is achieved by way of placing four output electrodes and at least one common electrode in the vicinity of the head, neck, and shoulder or back of a subject. In particular, two output electrodes are placed adjacent to the ears of the subject and two output electrodes are placed along the upper back of the subject. The at least one common transmitting electrode is placed on the back of the neck of the subject, generally just below the hairline. Stimulation of muscles/nerves in the vicinity of each output electrode is achieved substantially simultaneously by way of the current produced by the output electrodes.

Abstract: Disclosed are a method and apparatus for stimulating the masticatory, shoulder, or back, and facial muscles. This is achieved by way of placing four output electrodes and at least one common electrode in the vicinity of the head, neck, and shoulder or back of a subject. In particular, two output electrodes are placed adjacent to the ears of the subject and two output electrodes are placed along the upper back of the subject. The at least one common transmitting electrode is placed on the back of the neck of the subject, generally just below the hairline. Stimulation of muscles/nerves in the vicinity of each output electrode is achieved substantially simultaneously by way of the current produced by the output electrodes.

Abstract: A magnetic field sensor for use in a jaw tracking device. The sensor includes a Hall effect generator (110) and a pair of flux concentrators (112, 114). The Hall effect generator has first (116) and second (118) sensing faces disposed on opposite sides of the generator. Each flux concentrator comprises a strip of concentrator material formed into a U-shape, with a pair of opposed, mutually parallel side members (120, 122, 130, 132) interconnected at one end by a cross member (124, 134). The generator and flux concentrators are positioned such that the cross members are adjacent and parallel to the respective sensing faces, with the side members extending away from one another in a direction normal to the sensing faces. The sensor also preferably includes a metal-filled adhesive (140) having a high thermal conductivity bonding each cross member to its respective sensing face.