Laterotorsion after caloric stimulation in normal subjects and patients with depressed vestibular responses measured by a new device "thrce dimensional head rest" and microcomputor.

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The criptospinal reflex or laterotorsion, an expression of vestibulo-spinal reflex after caloric stimulation, can be demonstrated by a newly developed device, an "Encorder", i. e. a rolling photosensor, connected to a microcomputor and a printer. Three parameters, i. e. axis rotation, wipering action and sliding side to side are yielded online by this device. After cold irrigation (30°C), almost all normal subjects showed laterotorsion towards the slow phase of caloric nystagmus, one third showed laterotorsion towards the slow phase of "Heisswasser-Nystagmus" (Bárány). The patients with moderately or highly depressed vestibulo-ocular responses, however, showed remarkably good laterotorsion, which could prevent the occurrence of "jumbling" in the latter.
一般社団法人日本めまい平衡医学会の論文