منابع مشابه
Jaw reflexes in healthy old people.
OBJECTIVE to investigate variations in the masseteric myotatic reflex (jaw-jerk) and the silent period from the 5th to the 9th decades of life. SUBJECTS AND METHODS electromyographic data were recorded from the masseter muscle of the preferred chewing side by surface electrodes, using a computerized recording and analysis system. Chin taps were applied with a neurologist's hammer during mandi...
متن کاملChanges in spinal reflexes preceding a voluntary movement in young and old adults.
BACKGROUND Age-related differences in spinal excitability during response preparation were assessed by eliciting either a 50% H-reflex or an Achilles tendon reflex preceding the onset of a right plantar flexion contraction in 20 young adults (23.1 +/- 1.64 yrs) and 20 old adults (68.5 +/- 5.53 yrs). METHODS On each simple reaction time trial, the test reflex was elicited at a specific test in...
متن کاملVirtual Reflexes
Virtual Reality is used successfully to treat people for regular phobias. A new challenge is to develop Virtual Reality Exposure Training for social skills. Virtual actors in such systems have to show appropriate social behavior including emotions, gaze, and keeping distance. The behavior must be realistic and real-time. Current approaches consist of four steps: 1) trainee social signal detecti...
متن کاملVisuoocular reflexes in presbyvertigo.
Using electronystagmography, we tested 100 patients (ages 65-80 years) manifesting the clinical signs of presbyvertigo, for the purpose of demonstrating their visuoocular reflexes. We administered not only simple optokinetic and eye-tracking stimuli but caloric modification of each one as well (with contrary directed optokinetic trace movement). The results were compared with those obtained in ...
متن کاملUnifying Vestibulo-ocular Reflexes
We present an eye/head gaze controller based on recent findings in biological gaze control. Despite the absence of an explicit VOR mechanism the model is able to (i) produce classical VOR responses and (ii) reject head perturbations during the saccadic portion of a gaze shift executed to a remembered target -what is usually attributed to a separate vestibular mechanism. We argue that distinguis...
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ژورنال
عنوان ژورنال: Nature Biotechnology
سال: 1993
ISSN: 1087-0156,1546-1696
DOI: 10.1038/nbt0893-860c