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Square wave jerks (SWJ) are saccadic eye movements which, when recorded with open eyes are considered to be a pathological sign, caused by fixation instability, and pointing to a central neurological lesion. In reviewing 429 electronystagmographic traces, 85 (20%) were found to include the pattern of SWJ. Among them, in 38 traces, SWJ have been recorded(More)
Electromyography (EMG) of the inferior pharyngeal constrictor (IC) and the cricopharyngeal (CP) muscle was recorded in 18 patients with swallowing and/or aspiration problems who were candidates for cricopharyngeal myotomy. The EMG recordings were compared to those of 13 "normal" subjects who did not suffer from such problems. Differences in EMG activity(More)
Porphyromonas gingivalis is a gram-negative anaerobic bacterium, a member of the human oral microbiome, and a proposed "keystone" pathogen in the development of chronic periodontitis, an inflammatory disease of the gingiva. P. gingivalis is a genetically diverse species, and is able to exchange chromosomal DNA between strains by natural competence and(More)
Classic embryological studies have documented the inductive role of root dentin on adjacent periodontal ligament differentiation.  The biochemical composition of root dentin includes collagens and cleavage products of dentin sialophosphoprotein (DSPP), such as dentin sialoprotein (DSP).  The high abundance of DSP in root dentin prompted us to ask the(More)
We describe a case of gustatory rhinorrhea in which gustatory stimuli caused nasal obstruction and secretion simulating cerebrospinal rhinorrhea. This disorder was presumably caused by faulty regenerated parasympathetic nerve fibers reaching the nasal mucosa or, possibly, by a congenital condition. The characteristics of this disorder are compared with(More)
Short latency vestibular evoked response to repetitive acceleration stimuli were recorded by skin electrodes in cats, using electronic filtering and averaging techniques. The evoked response is composed of six to eight waves during the first 10 ms after the stimulus. These are followed by longer latency responses which are myogenic in nature. All of these(More)
Eye movements in response to caloric stimuli are recorded traditionally in the horizontal plane only. Twin channel electronystagmographic traces of 124 patients undergoing evaluation of vertigo were reviewed. Thirty traces (24%) were found to include a "true" vertical component to the evoked nystagmus. There was no correlation between the existence and the(More)
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