Synaptic actions of peripheral nerve impulses upon Deiters neurones via the climbing fibre afferents

Allen, G. I.; Sabah, Nassir H.; Toyama, K.

doi:10.1113/jphysiol.1972.sp009986

Cited by 34 publications

(4 citation statements)

References 17 publications

(24 reference statements)

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“…The minus sign(-) indicates no response, and x indicates that the nerve was not stimulated. There is a strong tendency for neurons receiving only forelimb input to project no farther than the cervical cord and for cells receiving hindlimb input to project as far as the lumbar cord (Allen et al, 1972a;Bruggencate et al, 1975a,b). ) in which MF responses are suppressed by barbiturates, does show a pattern which is illustrated for one neuron in Fig.…”

Section: (C) Somatosensory Input To Lvst Neuronsmentioning

confidence: 99%

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Mammalian Vestibular Physiology

Wilson¹,

Jones²

1979

696

203

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Ali rights reservedNo part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, microfllming, recording, or otherwise, without written permission from the Publisher PrefaceIt is easy to underrate the importance of a sensory system whose receptor is buried deep within the skull and of whose performance we are usually not aware. It is only when it malfunctions that we know we have a vestibular system! Unraveling the mechanisms by which activation of the vestibular labyrinth exerts its varied effects presents a great challenge, which increasing numbers of investigators are rushing to meet. At this time a period of transition appears to have been reached. On the one hand, physiological and anatomical techniques have provided extensive information about the properties of the receptor and of some of the pathways that link it to the musculature. On the other hand, extensive behavioral and psychophysical studies provide different insights into the mechanisms involved in vestibular reflexes. Until recently there has been relatively 1ittle interaction between the practitioners of these two widely different approaches. It has been our goal to assess and describe the progress that has been made in both areas and, when possible, to make a synthesis of the results. As will be seen, numerous questions are raised in the process, and we hope that they will help in pointing the way to further investigations.

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Section: (C) Somatosensory Input To Lvst Neuronsmentioning

confidence: 99%

“…Hindlimb nerves: FDHL, flexor digitorium hallucis longus; GS, gastrocnemius; PBST, posterior bicep~-semitendinosus; PC, plantar cutaneous; PDP, deep peroneal; PL, plantaris; QUAD, quadriceps; SMAB semimembranosus-anterior biceps; SP, superficial peroneal; SUR, sural (Allen et al, 1972a.). .…”

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confidence: 99%

Mammalian Vestibular Physiology

Wilson¹,

Jones²

1979

696

203

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“…6,7 These effects have been studied especially in the lateral vestibular nucleus. 8,9 The vestibulospinal reflexes can be tested only in standing position, 10,11 whereas caloric stimulation of the vestibular apparatus can be performed on patient's bed. After the caloric stimulation of the vestibular apparatus the so-called postcaloric nystagmus occurs, and the duration of this nystagmus is a measure of the excitability of a part of the vestibular apparatus (the lateral semicircular canal).…”

Section: Introductionmentioning

confidence: 99%

Vestibular function after spinal cord injury: preliminary results

Ribarič-Jankes¹,

Cobeljic²,

Svetel³

et al. 2009

Spinal Cord

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Study design: The excitability of the vestibular apparatus and pathways was studied in 10 patients with acute spinal cord injury (ASCI) and in 7 patients with chronic spinal cord injury (CHSCI). Objectives: Proprioceptive input that may be lost after spinal cord injury (SCI) is needed for integration with vestibular signals to produce proper postural control and perception of movement. This study examined whether there is a change in vestibular excitability after the disruption of the afferent proprioceptive input due to the spinal cord lesion. This study was carried out at Spine Injury Centre and Institute of Rehabilitation, Belgrade, Serbia. Methods: A total of 10 patients with ASCI and 7 with CHSCI were compared to a group of 50 age-matched healthy subjects. The excitability of the vestibular pathways was studied by means of a modified caloric test in which the duration of postcaloric nystagmus was measured. Results: ASCI patients with cervical lesions showed significantly reduced response durations (Po0.05). There was no difference in control values for ASCI and for CHSCI patients with thoracic or lumbal lesions. There was no difference in control values for cervical CHSCI patients. Conclusions: These results suggest that the vestibular response to caloric stimulation is supported by spinally mediated sensory input and that the loss of such input is compensated for over time. Further, these results show that the caloric test may be a useful tool for assessing the degree to which SCI disrupts multisensory integration in the vestibular system and tracking the process of reintegration.

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“…It has been assumed that the cervico-ocular reflex (COR) acts together with the VOR, optokinetic reflexes and possibly with vestibulo-collic (VCR) and cervico-collic reflexes (CCR) in the control of gaze sta bility [for a review, see ref. 22], In animals, the close oculomotor interac tion between neck and vestibular efferents has been widely demonstrated in anatomical and physiological studies [2,3,7,8,12,16,18,29,35].…”

Section: Introductionmentioning

confidence: 99%

Inhibition of Vestibulo-Ocular Reflex by Tonic Stimulation of the Posterior Neck Region in Man

Nuti¹,

Rossi

1986

ORL

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The effect of posterior neck stimulation on vestibulo-ocular reflex (VOR) was studied in 10 healthy subjects. The experimental situation was designed to minimise all afferent inputs except from the neck; each subject was placed in supine position with body fixed to a tilting table inclinable in a vertical plane. The head was immovably secured at 30 ° to an independent non-inclinable rigid frame. In this situation the body could be mechanically moved upwards in the vertical plane (ventriflexion), producing symmetrical and selective stretch of the posterior neck region. The VOR elicited by caloric monoaural stimulation was evaluated for each of the following static positions: 0 ° and 50 ° of ventriflexion and vice versa. We observed a significant decrease in the slow-phase angular velocity of induced nystagmus as the body was tilted upwards and a significant opposite effect when the body was returned to the original position. Similar changes in VOR were observed in 4 selected patients with spontaneous ‘peripheral nystagmus’. Mechanisms involved in the cervical control of VOR are discussed.

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Synaptic actions of peripheral nerve impulses upon Deiters neurones via the climbing fibre afferents

Cited by 34 publications

References 17 publications

Mammalian Vestibular Physiology

Mammalian Vestibular Physiology

Vestibular function after spinal cord injury: preliminary results

Inhibition of Vestibulo-Ocular Reflex by Tonic Stimulation of the Posterior Neck Region in Man

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