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1963: Radiobiologiia
J B Terry, R N Rosenberg
BACKGROUND: Gait abnormalities often result from disorders intrinsic to the cerebellum. Gait difficulties resulting from frontal lobe disease are less common but well recognized. The pathophysiologic mechanism of this type of ataxia is not well understood. One promising explanation implicates involvement of the frontopontocerebellar tract (Arnold's bundle). This tract originates in the frontal lobe in Brodmann's area 10 and carries information on intended movement to the contralateral cerebellum via the pontocerebellar peduncle...
December 1995: Surgical Neurology
M Hallett, R M Dubinsky
Using positron emission tomography with [18F]fluoro-2-deoxyglucose, we determined the regional cerebral metabolic rate of glucose utilization at rest in 8 medication-free patients with essential tremor and in 10 normal subjects. Taking the metabolic values of regions of interest as ratios to the mean hemispheric metabolism, the patients showed significant glucose hypermetabolism of the medulla and thalami, but not of the cerebellar cortex. This study lends support to earlier suggestions that circuits involving the inferior olivary nuclei in the medulla and the thalmus are involved in the generation of essential tremor...
January 1993: Journal of the Neurological Sciences
L P Morin, N Goodless-Sanchez, L Smale, R Y Moore
The patterns of projections from the hamster suprachiasmatic nucleus, retrochiasmatic area and subpraventricular hypothalamic zone were examined using anterograde tracing with the plant lectin, Phaseolus vulgaris leucoagglutinin. Suprachiasmatic nucleus efferents comprise four major fiber groups: (i) an anterior projection to the ventral lateral septum, the bed nucleus of the stria terminalis and anterior paraventricular thalmus; (ii) a periventricular hypothalamic projection extending from the preoptic region to the premammillary area; (iii) a lateral thalamic projection to the intergeniculate leaflet and ventral lateral geniculate; and (iv) a posterior projection to the posterior paraventricular thalamus, precommissural nucleus and olivary pretectal nucleus...
July 1994: Neuroscience
P De Giacomo
No abstract text is available yet for this article.
January 1966: Acta Neurologica
L G Sharpe, L W Swanson
1. Unilateral and bilateral injections of 1.0 mul. solutions of angiotensin II into specific brain sites produced copious drinking of water in the water-replete rhesus monkey (Macaca mulatta).2. Of six brain regions in seven monkeys into which a total of 368 microinjections of angiotensin II were made, three were sensitive to angiotensin II. In decreasing order of sensitivity, they were (i) a rostral zone that included the septum, the anterior hypothalamus and the preoptic region, (ii) a caudal zone consisting of the mesencephalic central grey, and (iii) the lateral and third ventricles near the foramen of Monro...
June 1974: Journal of Physiology
V S Kobozev
No abstract text is available yet for this article.
May 1970: Doklady Akademii Nauk SSSR
T Kanno, Y Kamel, T Yokoyama, M Shoda, H Tanji, M Nomura
We have reported that DCS (dorsal column stimulation) improves the clinical symptoms of cases in persistent vegetative states. Since then, we have accumulated 23 cases who have been treated by DCS. We describe the clinical EEG, rCBF, and biochemical changes in cerebrospinal fluid (CSF) caused by DCS in patients in persistent vegetative states: (1) eight of these cases showed good clinical improvement; (2) most patients were young and the CT scan did not show large, diffuse, definite or bilateral low density areas in cortex, brainstem of thalmus; (3) neurostimulation increased rCBF (cerebral blood flow) in many parts of the brain in cases with vegetative states; blood flow increased in the cerebrum, cerebellum and brainstem; (4) neurostimulation enhanced the metabolism of catecholamines in CSF, NE, DA, DOPAC, HVA, and 5HIAA increased, but 3MT and 5HT decreased in CSF...
April 1989: Pacing and Clinical Electrophysiology: PACE
C M Helgason, A C Wilbur
Twenty-three patients with hypesthetic ataxic hemiparesis underwent computed tomography or magnetic resonance imaging. Twenty-two patients had infarcts of lacunar or slightly larger size in the contralateral posterior limb of the internal capsule. In 15 patients the infarct extended superiorly into the adjacent paraventricular region, and in seven it extended into the lateral thalmus. In eight patients the infarct was limited to the posterior limb of the internal capsule, and in only two patients was an ipsilateral to capsular pontine lacune found...
January 1990: Stroke; a Journal of Cerebral Circulation
J B Terry, T L Padzernik, S R Nelson
Male Sprague-Dawley rats received LiCl (5 mEq/kg; sc) or saline 24 h prior to injection of cholinomimetics. Physostigmine (PHY, 0.54-0.80 mg/kg), diisopropylfluorophosphate (DFP, 1.3-2.5 mg/kg), pilocarpine (PIL, 23-30 mg/kg), or saline was injected subcutaneously at time 0. Rats were observed for seizure activity for 2 h, survivors were killed 24 h later and edema was measured in samples from parietal and piriform cortices, dorsal thalmus, and hippocampus. None of the rats pretreated with saline had seizures when given doses of cholinomimetics alone...
June 22, 1990: Neuroscience Letters
A E Applebaum, R B Leonard, D R Kenshalo, R F Martin, W D Willis
The approximate level of termination of the axons of individual, functionally characterized spinothalamic tract neurons within the monkey thalmus was mapped by antidromic activation using a monopolar electrode which was moved in a systematic grid of tracks through the thalamus. The course of individual axons could be followed through several thalamic levels, and in a few cases branches to both the VPL nucleus and to the intralaminar nuclei were demonstrated. Most of the axons studied, however, projected just to the VPLc or VPLo nuclei...
December 15, 1979: Journal of Comparative Neurology
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