Naoki Haraguchi

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Jaw movements and masticatory muscle activity were recorded in freely moving rabbits during limb-licking, chewing, and drinking. The limb-licking movement was characterized by rhythmical jaw movement and digastric burst and relatively small masseter activity. The mean cycle time was 292 ms +/- 11.0 (mean +/- SE: n = 7) and was longer than that in chewing(More)
A system for simultaneously recording mandibular position in the sagittal plane together with masticatory muscle activity was designed and tested in rabbits. Two small magnetic sensors were implanted in the maxillary bone and a powerful magnet made of a rare earth metal attached to the mandibular central incisors. The magnetic sensors detected the(More)
Masseter and digastric muscle activities and jaw movement trajectories were recorded in freely moving rabbits during eating. The patterns in these trajectories and activities were similar to those described in previous studies on restrained animals. Although the duration of masticatory sequences, which started with food intake followed by grinding movements(More)
Reflex changes in masticatory muscles were investigated in naturally behaving rabbits while chewing soft food (bread) and hard food (raw rice). To study peripheral control mechanisms of mastication, reflex changes in masticatory muscles were correlated with the jaw movement trajectories. When the hard food was tested, the closing muscle was activated(More)
The ability to combine physiology and engineering analyses with computer sciences has opened the door to the possibility of creating the "Virtual Human" reality. This paper presents a broad foundation for a full-featured biomechanical simulator for the human musculoskeletal system physiology. This simulation technology unites the expertise in biomechanical(More)
Main-chain chiral quaternary ammonium polymers were successfully synthesized by the quaternization polymerization of cinchonidine dimer with dihalides. The polymerization occurred smoothly under optimized conditions to give novel type of main-chain chiral quaternary ammonium polymers. The catalytic activity of the polymeric chiral organocatalysts was(More)
BACKGROUND The Japanese Society for Surgery of the Foot (JSSF) is developing a QOL questionnaire instrument for use in pathological conditions related to the foot and ankle. The main body of the outcome instrument (the Self-Administered Foot Evaluation Questionnaire, SAFE-Q version 2) consists of 34 questionnaire items, which provide five subscale scores(More)
We propose a multiprocessor architecture with partially shared memory blocks, which is, we think, best suited for the successive approximation of scientific computing problems, such as matrix operations, partial differential equations etc. The topology is a ring. But the system configuration is a subset of an orthogonal multiprocessor Scherson and Hwang(More)
The Ad Hoc Committee of Terminology of the Japanese Society for Surgery of the Foot (JSSF) proposes novel terminology for motion of the ankle, foot, and toe because there are some ambiguities in the current terminology. Articles were identified by searching the electronic databases of PubMed that compared definitions of American Orthopaedic Foot and Ankle(More)
To understand the modulation of periodontal mechanoreceptor activity on mastication, the jaw-opening reflex (JOR) evoked by electrical stimulation of the inferior alveolar nerve (IAN) was studied during chewing in freely behaving rabbits. Spontaneous chewing movements were intact from the IAN stimulation below two times the threshold (T) which was measured(More)