Equilibrium Disorders and R-R Intervals in Eeg

Ohashi, Naoki; Kanda, Keisuke; Shoujaku, Hideo; Ohi, Hideya; Watanabe, Yukio; Mizukoshi, Kanemasa

doi:10.1016/s0385-8146(86)80073-6

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…Thus, it is not surprising that the autonomic nervous system would be affected by vestibular dysfunction. Indeed, many investigators have reported autonomic nervous system dysfunction in patients with vertigo [1,5,10,17,20,22,23]. Several studies have suggested that asymmetry in the autonomic nervous system in vertiginous patients causes asymmetrical excitability of the vestibular system, resulting in nystagmus and vertigo [19,21].…”

Section: Discussionmentioning

confidence: 99%

Auditory-pupillary responses in patients with vestibular neuritis

Kitajima

Kobayashi

Otsuka

et al. 2013

VES

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Pupillary dilation in response to sound stimuli is well established and generally represents a startle reflex to sound. We previously reported that auditory-pupillary responses (APRs) persist with bilateral deafness, and that the pathways mediating APRs involve not only the cochlea but also otolith organs, especially the saccule. Here, we evaluated the vestibulo-autonomic responses in vestibular neuritis (VN) by assessing APRs. Twelve young healthy volunteers without a history of hearing and equilibrium problems and 10 VN patients participated. To clarify the relationship between APRs and vestibular function, especially otolith function, we performed caloric and vestibular-evoked myogenic response testing on VN patients. In normal subjects, we examined APRs when delivering sound stimuli to both sides. In VN patients, we examined APRs when delivering stimuli simultaneously to both sides, to the affected side alone, and then to the unaffected side alone. With binaural stimulation, the pupillary index (PI) -the rate of dilation -of VN patients significantly differed from those of normal subjects. Moreover, in VN patients, PIs of the affected sides were significantly larger than those of the unaffected sides. Our study provides evidence that examining APRs may be useful for evaluating vestibulo-autonomic reflexes, especially otolith-autonomic reflexes.

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Section: Discussionmentioning

confidence: 99%

Auditory-pupillary responses in patients with vestibular neuritis

Kitajima

Kobayashi

Otsuka

et al. 2013

VES

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“…Dysfunction of the autonomic nervous system in patients with vertigo has been pointed out by many investigators (1)(2)(3)(4)(5)(6)(7). Autonomic nervous activity in these patients has been measured using Aschner's reflex, pupil diameter and vertebral blood flow during and between vertigo attacks (1)(2)(3)(4)(5).…”

Section: Introductionmentioning

confidence: 99%

Vagal and Sympathetic Nerve Activities Influenced by Posterior Cerebral Circulation in Rabbits

Yamamoto

Kubo²,

Matsunaga³

1993

Acta Oto-Laryngologica

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Yamamoto K, Kubo T, Matsunaga T. Vugul und .syrnpthctic nrrre uctii;itie.s inJluencerl bj. posterior cerebral circulutions in rabbits. Acta Otolaryngol (Stockh) 1993: Suppl 506: 30-33.Vagal and sympathetic nervous activities in the rabbit were recorded while vertebral blood flow was partially blocked by the injection of adenosine S'dphosphate (ADP: platelet aggregator). When a small dose of ADP (0.2mg/kg) was administrated into a unilateral vertebral artery, sympathetic nerve (SN) activity increased, and its magnitude was inversely correlated with the extent of the decrease in blood pressure (BP). A larger dose ( 2 mg/kg) of ADP suppressed SN activity on the injected side. whereas the change was small on the non-injected side. Vagal nerve (VN) activity showed a monophasic excitatory response on both sides, although the change was larger on the injected than on the non-injected side. As a result. asymmetry in autonomic nerve activity was more distinct in SN than in VN. The present study demonstrated that asymmetry of autonomic nervous function can result from changes in blood flow in the cerebellum and brainstem. Kej. ivorcls: .sytnpor/teiic nerue. iqgul ni'ru~, microemboli. A DP. Acta Otolaryngol Downloaded from informahealthcare.com by Nyu Medical Center on 07/13/15 For personal use only. Acta Otolaryngol Downloaded from informahealthcare.com by Nyu Medical Center on 07/13/15 For personal use only.

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Otoneurological manifestations of the Shy-Drager syndrome

Ohashi

Nakagawa

Kanda

et al. 1991

Eur Arch Otorhinolaryngol

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Three patients with the chief complaints of dizziness while standing up or blackouts were diagnosed correctly as having the Shy-Drager syndrome at the Department of Otolaryngology. Both the electrocardiogram R-peak to R-peak interval and the Schellong test revealed disorders of the autonomic nervous system in each of these cases. Electronystagmography also demonstrated pathology of the oculomotor system and/or central vestibular system. Postural balance was also abnormal in one of the cases. Auditory brain-stem responses were normal in all three cases.

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Equilibrium Disorders and R-R Intervals in Eeg

Cited by 6 publications

References 4 publications

Auditory-pupillary responses in patients with vestibular neuritis

Auditory-pupillary responses in patients with vestibular neuritis

Vagal and Sympathetic Nerve Activities Influenced by Posterior Cerebral Circulation in Rabbits

Otoneurological manifestations of the Shy-Drager syndrome

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