Search Results - "Roberts, M.H.T"

Efferent connections from the anterior pretectal nucleus to the diencephalon and mesencephalon in the rat by Terenzi, M.G., Zagon, A., Roberts, M.H.T.

“…The anterior pretectal nucleus has been described as part of the visual pretectal complex. However, several electrophysiological and behavioural studies showed…”
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Electrophysiological evidence for excitatory 5-HT2 and depressant 5-HT1A receptors on neurones of the rat midbrain tectum by Brandão, M L, Lopez-Garcia, J A, Graeff, F G, Roberts, M H

“…It has been claimed that the aversive behaviour induced by electrical stimulation of the midbrain tectum (MT) has validity as an animal model of panic attack…”
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An assessment of the antinociceptive and aversive effects of stimulating identified sites in the rat brain by Prado, W A, Roberts, M H

“…At many sites in the brain electrical stimulation with low current intensity is both aversive and causes antinociception. In view of the well documented…”
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Effects of 5‐hydroxytryptamine agonists and antagonists on the responses of rat spinal motoneurones to raphe obscurus stimulation by Roberts, M.H.T., Davies, M., Girdlestone, D., Foster, G.A.

“…1 The excitability of lumbar spinal motoneurones was studied in halothane‐anaesthetized rats by recording with microelectrodes the amplitude of the population…”
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RESPONSES OF MOTONEURONES TO ELECTROPHORETICALLY APPLIED DOPAMINE by BARASI, S., ROBERTS, M.H.T.

“…1 The effect of electrophoretically applied dopamine upon motoneurone excitability has been investigated. Field potentials originating from antidromically…”
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CB1 receptor mediated analgesia from the Nucleus Reticularis Gigantocellularis pars alpha is activated in an animal model of neuropathic pain by Monhemius, R, Azami, J, Green, D.L, Roberts, M.H.T

“…Cannabinoids are known to suppress responses to noxious stimulation in animals and man. Recent research has suggested a role for endogenous cannabinoids in the…”
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The behavioural importance of dynamically activated descending inhibition from the nucleus reticularis gigantocellularis pars alpha by Azami, J, Green, D.L, Roberts, M.H.T, Monhemius, R

“…We have recently demonstrated (J Physiol 506 (1998) 459) that the dynamic activation of descending inhibition of the nociceptive response of spinal…”
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Periaqueductal grey mediated inhibition of responses to noxious stimulation is dynamically activated in a rat model of neuropathic pain by Monhemius, R, Green, D.L, Roberts, M.H.T, Azami, J

“…The periaqueductal grey (PAG) has been shown to be a major source of descending inhibition of dorsal horn cells (Textbook of Pain (1999) 309). However, few…”
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The anterior pretectal nucleus: a proposed role in sensory processing by Rees, H, Roberts, M H T

“…Four nuclei of the pretectal complex, the olivary pretectal nucleus, the medial pretectal nucleus, the nucleus of the optic tract and the posterior pretectal…”
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Direct projections from the anterior pretectal nucleus to the ventral medulla oblongata in rats by Zagon, A., Terenzi, M.G., Roberts, M.H.T.

“…The anterior pretectal nucleus has recently been implicated in the descending modulation of nociception. Electrical stimulation of the nucleus was found to…”
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5-Hydroxytryptamine and antinociception by Roberts, M H

“…The considerable evidence supporting a role for 5-hydroxytryptamine (5-HT) in the modulation of nociceptive thresholds is reviewed. The postulate that an…”
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The antinociceptive effects of stimulating the pretectal nucleus of the rat by Roberts, M H T, Rees, H

“…Changes in the tail-flick latency to noxious heat were studied following electrical stimulation of the dorso-medial thalamus of the rat. Brief (15 sec), low…”
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A post-synaptic depressant modulatory action of 5-hydroxytryptamine on excitatory amino acid responses in rat entorhinal cortex in vitro by Sizer, A R, Kilpatrick, G J, Roberts, M H

“…The depressant action of 5-hydroxytryptamine (5-HT) in slices of entorhinal cortex of the rat has been examined. When single intracellular recordings of…”
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Afferent projections to the rostral anterior pretectal nucleus of the rat: a possible role in the processing of noxious stimuli by Foster, G A, Sizer, A R, Rees, H, Roberts, M H

“…The afferent inputs to the rostral pole of the anterior pretectal nucleus have been examined by utilizing the retrograde axonal transport of a fluorescent dye,…”
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The antinociceptive effects of anterior pretectal stimulation in tests using thermal, mechanical and chemical noxious stimuli by Wilson, D G, Rees, H, Roberts, M H T

“…Four behavioural tests have been used to study the antinociceptive effects of electrical stimulation of the anterior pretectal nucleus (APtN) in the rat. The…”
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The antinociception evoked by anterior pretectal nucleus stimulation is partially dependent upon ventrolateral medullary neurones by Terenzi, M G, Rees, H, Morgan, S J S, Foster, G A, Roberts, M H T

“…Electrical stimulation (35 microA rms/15 s) of the anterior pretectal nucleus (APtN) inhibits the spinal reflex of the tail-flick (TF) to noxious heat in…”
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Central antiaversive and antinociceptive effects of anterior pretectal nucleus stimulation: attenuation of autonomic and aversive effects of medial hypothalamic stimulation by Brandão, M L, Rees, H, Witt, S, Roberts, M H

“…Previous studies have shown that stimulation of the rat anterior pretectal nucleus (APtN) strongly depresses a spinal reflex to noxious heat without causing…”
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THE MODIFICATION OF LUMBAR MOTONEURONE EXCITABILITY BY STIMULATION OF A PUTATIVE 5‐HYDROXYTRYPTAMINE PATHWAY by BARASI, S., ROBERTS, M.H.T.

“…1 Changes in lumbar motoneurone excitability were monitored by recording spinal reflex activity from the ventral roots of rats anaesthetized with fluothane. 2…”
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Brainstem mechanisms of antinociception. Effects of electrical stimulation and injection of morphine into the nucleus raphe magnus by Llewelyn, M B, Azami, J, Roberts, M H

“…The microinjection of morphine into the nucleus raphe magnus (NRM) increased the tail-flick latency of rats but also increased the size of noxiously-evoked…”
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The effects of intraperitoneal administration of antagonists and development of morphine tolerance on the antinociception induced by stimulating the anterior pretectal nucleus of the rat by Rees, H., Prado, W.A., Rawlings, S., Roberts, M.H.T.

“…1 The effects of intraperitoneal administration of antagonists to morphine, 5‐hydroxytryptamine (5‐HT), noradrenaline and dopamine have been studied on the…”
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