abstract：:Dendritic branching of neurons may be quantitatively studied using applications of graph theory. Dendritic ramifications may be considered as 'forests' of planted, stemmed, binary 'trees' with simple mathematical properties. Two fundamental numbers, that of dendritic tips and that of dendritic stems, usually suffice t...

journal_title：Neuroscience letters

authors： Percheron G

更新日期：1979-10-01 00:00:00

abstract：:The enzyme horseradish peroxidase (HRP) has been applied to the proximal stumps of severed thoracic and lumbar dorsal roots in the turtles Pseudemys scripta elegans and Testudo hermanni. The results obtained confirm the distribution pattern observed with anterograde degeneration techniques. Primary afferent terminal s...

journal_title：Neuroscience letters

authors： Kusuma A,ten Donkelaar HJ

更新日期：1979-10-01 00:00:00

abstract：:Kainic acid binding was measured in crude membrane fractions prepared from postmortem human caudate tissue of control persons and patients afflicted with Huntington's disease. A significant reduction in binding sites with no change in affinity was found in the Huntington's tissue, the apparent dissociation constants (...

journal_title：Neuroscience letters

authors： Henke H

更新日期：1979-10-01 00:00:00

abstract：:The fine structure of striato-nigral efferent neurons, retrogradely labeled with HRP, was studied. The neuron showed a medium sized ovoid or tri-angular perikaryon. Short or medium lengthened granular endoplasmic reticula, having a tendency to wind and pile up in stacks were observed. This neurons corresponds to a typ...

journal_title：Neuroscience letters

authors： Kaiya H,Okinaga M,Namba M,Shoumura K,Watanabe S

更新日期：1979-09-01 00:00:00

abstract：:Neurons simultaneously immunoreactive with anti-beta-endorphin and anti-(17-39) corticotropin (anti(17-39) ACTH) have been detected in the arcuate and ventromedial nuclei of the hypothalamus of colchicine-treated rats. These neurons are different from those fluorescent with the Falck and Hillarp technique. These resul...

journal_title：Neuroscience letters

authors： Bugnon C,Bloch B,Lenys D,Gouget A,Fellmann D

更新日期：1979-09-01 00:00:00

abstract：:Morphine hydrochloride (10 mg/kg,i.p.) induced marked catalepsy in rats, which was associated with significantly enhanced striatal acetylcholine levels and reduced cholinesterase activity. Rapid tolerance to morphine-induced catalepsy was noted after twice daily administrations, the tolerance being discernible after t...

journal_title：Neuroscience letters

authors： Bose R,Kumar A,Bhattacharya SK

更新日期：1979-09-01 00:00:00

abstract：:The cellular localisation of benzodiazepine receptors was studied. Kainic acid induced neuronal lesions (2 x 0.25-2 x 2 micrograms; 2-26 days in rat cerebellum decreased specific binding of [3H]flunitrazepam down to 35% of controls. Specific binding of [3H]flunitrazepam was also decreased (to 80% of controls) in the c...

journal_title：Neuroscience letters

authors： Braestrup C,Nielsen M,Biggio G,Squires RF

更新日期：1979-08-01 00:00:00

abstract：:Day-old chickens trained in pairs on an aversive discrimination task yielded a retention function with two points of reduced retention, at 15 and 55 min after learning. These points of temporary reduction in retention were interpreted as reflecting change-over of recall from three successive phases in memory formation...

journal_title：Neuroscience letters

authors： Gibbs ME,Ng KT

更新日期：1979-08-01 00:00:00

abstract：:In our horseradish peroxidase (HRP) study of the afferents to the medullary raphe nuclei in the cat, HRP uptake by damaged axons en route to the inferior olive (IO) was thought to be responsible for retrograde labelling of specific midbrain nuclei. To control for such indirect labelling, HRP was injected iontophoretic...

journal_title：Neuroscience letters

authors： Abols IA,Basbaum AI

更新日期：1979-07-01 00:00:00

abstract：:The unensheathed axons in the spinal roots of adult dystrophic mice were examined by freeze-fracture electron microscopy. In most areas of these abnormal fibers the distribution of intramembraneous particles was similar to that of the internodal segments of normal axons with many more particles on the PF (internal) le...

journal_title：Neuroscience letters

authors： Bray GM,Cullen MJ,Aguayo AJ,Rasminsky M

更新日期：1979-07-01 00:00:00

abstract：:The effect of pineal indoles on fast axoplasmic transport of proteins in the sciatic nerve was examined in rats injected with [3H]leucine in the sixth lumbar dorsal root ganglion. Melatonin (350-1100 nmol) applied locally in the sciatic nerve impaired significantly axonal transport. At a 350-nmol dose all other indole...

journal_title：Neuroscience letters

authors： Prevedello MR,Ritta MN,Cardinali DP

更新日期：1979-06-01 00:00:00

abstract：:The angular distribution of mitotic spindle fibers has been studied in the telencephalic ventricular zone (VZ) of mouse embryos and has been found to be monophasic and invariant during the early cortical histogenesis both in the normal and in a reeler embryo. This observation suggests that the orientation of mitotic s...

journal_title：Neuroscience letters

authors： Landrieu P,Goffinet A

更新日期：1979-06-01 00:00:00

abstract：:Topical application of horseradish peroxidase (HRP) to the ventral surface of the medulla oblongata revealed various cells with axons terminating near this region. Fibers traced from the ventral surface originated in the nucleus of the tractus solitarius and the dorsal nucleus of the vagus, both near the dorsal surfac...

journal_title：Neuroscience letters

authors： Errington ML,Dashwood MR

更新日期：1979-05-01 00:00:00

abstract：:Using a specific radioimmunoassay (RIA), we have quantitated the hypothalamic and extrahypothalamic distribution of vasoactive intestinal polypeptide (VIP) in the rat brain. Highest concentrations of VIP were found in cerebral cortex, suprachiasmatic nucleus, and medial amygdaloid nucleus. Lower concentrations were fo...

journal_title：Neuroscience letters

authors： Samson WK,Said SI,McCann SM

更新日期：1979-05-01 00:00:00

abstract：:The action of glycine (Gly) on rat cortical neurons was studied. Gly, iontophoretically applied, hyperpolarized the membrane potential, blocked the firing rate and decreased the amplitude of EPSP-IPSP sequences. Generally the membrane resistance during the aminoacid ejection decreased. The role of Gly in the rat corti...

journal_title：Neuroscience letters

authors： Bernardi G,Cherubini E,Marciani MG,Stanzione P

更新日期：1979-05-01 00:00:00

abstract：:From the effects of selective lesions it is concluded that opiate receptors are located on dopamine (DA) cell-bodies and/or dendrites as well as on GABA nerve-terminals in substantia nigra. ...

journal_title：Neuroscience letters

authors： Llorens-Cortes C,Pollard H,Schwartz JC

更新日期：1979-05-01 00:00:00

abstract：:Neurite outgrowth is elicited from whole explants or dissociated neurons of 8--10-day-old chick embryo sensory, dorsal root ganglia when cultured in the presence of a high speed supernatant fraction (105,000 g) from homogenates of chick or rat heart, liver or brain. The neurite promoting activity is not identical to m...

journal_title：Neuroscience letters

authors： Lindsay RM,Tarbit J

更新日期：1979-05-01 00:00:00

abstract：:By combining techniques designed to increase the amount of horseradish peroxidase (HRP) available for transport and to improve the sensitivity of the reaction for detecting HRP, we have produced an anterograde HRP technique suitable for labeling sparse efferent projections. The efficacy of this light, microscopic tech...

journal_title：Neuroscience letters

authors： West JR,Black AC Jr

更新日期：1979-04-01 00:00:00

abstract：:Plasma corticosterone has been correlated with the susceptibility to animal hypnosis in male rabbits. Subjects (Ss) were considered susceptible when mean hypnosis duration was above 30 sec or when initial duration (duration of trial 1) was greater than 0. A positive significant correlation was found between mean and i...

journal_title：Neuroscience letters

authors： Carli G,Farabollini F,di Prisco CL

更新日期：1979-03-01 00:00:00

abstract：:Four weeks after lesion of the cortico-striatal pathway, the specific kainic acid binding was reduced by 20% in the neostriatum. It is concluded that the binding sites are most likely not located on cortico-striatal neurons. The displacement of kainic acid by some chemical indicates that the kainic acid binding site i...

journal_title：Neuroscience letters

authors： Henke H,Cuénod M

更新日期：1979-03-01 00:00:00

abstract：:Different responses evoked by stimulation of contralateral hippocampus at various levels are examined in new-born rabbits up to 1 month of age. Commissural fibres coming from the CA3-CA4 reach the contralateral regio superior (CA1) essentially at the st. oriens levels. CA1 responses elicited by stimulation of the cont...

journal_title：Neuroscience letters

authors： Thomson MA

更新日期：1979-02-01 00:00:00

abstract：:Adjacent serial sections of the organum vasculosum laminal terminalis (OVLT) of the rat were incubated with antisera of luteinizing-hormone--releasing-hormone (LH-RH) and somatostatin and stained by the peroxidase-antiperoxidase technique. The distribution patterns of the two oligopeptides show distinct differences, a...

journal_title：Neuroscience letters

authors： Krause R

更新日期：1979-02-01 00:00:00

abstract：:Gangliosides isolated from the brain of patients with Creutzfelt-Jakob (C-J) disease were analyzed. The ganglioside current was abnormally low, and the percentage distributions of individual gangliosides and the long-chain base compositions were abnormal. The C20-sphingosine contents of all the ganglioside fractions w...

journal_title：Neuroscience letters

authors： Tamai Y,Ohtani Y,Miura S,Narita Y,Iwata T,Kaiya H,Namba M

更新日期：1979-01-01 00:00:00

abstract：:Following the i.c.v. administration of antivasopressin serum the alpha-MPT-induced disappearance of noradrenaline was decreased in the dorsal septal nucleus, parafascicular nucleus and the rostral part of the nucleus tractus solitarii, whereas that of dopamine was lowered in the caudate nucleus and in the A2 region of...

journal_title：Neuroscience letters

authors： Versteeg DH,De Kloet ER,Greidanus TV,De Wied D

更新日期：1979-01-01 00:00:00

abstract：:In anesthetized cats selective activation of fine muscle afferents of the hindlimb by KCl or bradykinin (Brad.) induced reflex changes in the urinary bladder. The nature of the reflex responses depended on the functional state of the bladder: they were excitatory when the bladder was quiescent and inhibitory during la...

journal_title：Neuroscience letters

authors： Sato A,Sato Y,Schmidt PF

更新日期：1979-01-01 00:00:00

abstract：:Adenosine and AMP (5'-adenosine monophosphate) applied by microiontophoresis produced depression of neuronal firing rates in cerebral cortex. A number of antidepressant drugs including examples which are known not to affect noradrenaline uptake systems, potentiated the depressant purine effects. Noradrenaline response...

journal_title：Neuroscience letters

authors： Stone TW,Taylor DA

更新日期：1979-01-01 00:00:00

abstract：:Cuneo-thalamic projection cells in the rat were identified after injection of horseradish peroxidase into the contralateral thalamic nucleus ventralis posterolateralis. By light microscopy, labelled cells were 16-20 microm in diameter, round or oval in shape, distributed throughout the cuneate nucleus and concentrated...

journal_title：Neuroscience letters

authors： Tan CK,Lieberman AR

更新日期：1978-11-01 00:00:00

abstract：:Four new tactile areas in the cerebellar cortex (crus I, crus II, paramedian lobule and uvula) have recently been described in the rat. Ipsilateral orofacial regions are chiefly represented in these areas. Our study of trigeminocerebellar afferents to these areas using the HRP retrograde tracing technique shows that t...

journal_title：Neuroscience letters

authors： Watson CR,Switzer RC 3rd

更新日期：1978-11-01 00:00:00

abstract：:In rats anesthetized with pentobarbital or a mixture of urethane and chloralose, horseradish peroxidase (HRP) was injected into the intermediolateral column of the spinal cord (Th7 and Th9) or the posterior pituitary lobe. HRP positive cells were found mainly in the dorsomedial part of the paraventricular nuclease (PV...

journal_title：Neuroscience letters

authors： Ono T,Nishino H,Sasaka K,Muramoto K,Yano I,Simpson A

更新日期：1978-11-01 00:00:00

abstract：:Morphine blocked decremental bar pressing of rats to escape electrical stimulation of aversive midbrain sites. These sites included the dorsal central gray area (DCG), the ventral reticular formation (VRF) and the lateral tegmentum (LT). Naloxone, which had no effect alone, blocked the morphine effects of all three av...

journal_title：Neuroscience letters

authors： Kiser RS,German DC

更新日期：1978-11-01 00:00:00

abstract：:The distribution of cells concentrating R 5020, a potent synthetic progestin, in the brain and pituitary of estrogen-primed ovariectomized rat was investigated by radioautography. In the brain, radioactivity was found concentrated in nuclei of neurons in the preoptic region (nucleus (n.) preopticus pars suprachiasmati...

journal_title：Neuroscience letters

authors： Warembourg M

更新日期：1978-10-01 00:00:00

abstract：:Displaced ganglion cells were identified in the carp retina by the retrograde axonal transport of horseradish peroxidase injected into the optic tectum. Cells in the ganglion cell layer were all labelled, while in the amacrine cell layer only 1/4000 cells were labelled. Because of such low population, it is unlikely t...

journal_title：Neuroscience letters

authors： Tachibana M

更新日期：1978-09-01 00:00:00

abstract：:The use of the cobalt technique is limited by the fact that cobaltous ions travel within axons for a shorter distance than do other intracellular markers. In the present experiments different organic cobaltous complexes were tested in the rat's sciatic nerve. Cobaltous complexes containing ornithine, threonine, lysine...

journal_title：Neuroscience letters

authors： Gallyas F,Lénárd L,Lázár G

更新日期：1978-09-01 00:00:00

abstract：:The experiments were designed to determine whether twisting of the trunk induces eye movements in man. The subject's head and neck were fixed firmly, and the chair in which the subject sat was turned along a vertical axis sinusoidally at about 1 4 Hz . It was found that the eye deviated horizontally in a direction cou...

journal_title：Neuroscience letters

authors： Warabi T

更新日期：1978-09-01 00:00:00

abstract：:Representation of peripheral branches of the facial nerve within the facial nucleus of the cat was examined by utilizing retrograde axonal transport of horseradish peroxidase (HRP), which was injected into groups of muscles supplied by each of the main peripheral branches of the facial nerve. The cervical branch was r...

journal_title：Neuroscience letters

authors： Kume M,Uemura M,Matsuda K,Matsushima R,Mizuno N

更新日期：1978-04-01 00:00:00

abstract：:In the rat the response of suprachiasmatic nucleus neurons to steady retinal illumination at different adaptation luminances was studied. The results confirm that in this nucleus the discharge rate is more commonly increased than suppressed by light. Interval histograms indicate that a complex process underlies the di...

journal_title：Neuroscience letters

authors： Groos G,Mason R

更新日期：1978-04-01 00:00:00

abstract：:Optic fibre regeneration in young Xenopus was studied by [(3)H]proline autoradiography and by mapping the visuotectal projection electrophysiologically from 5 to 210 days after sectioning the right optic nerve. Regenerated optic fibers were demonstrated morphologically both in the contra and ipsilateral tecta. In cont...

journal_title：Neuroscience letters

authors： Glastonbury J,Straznicky K

更新日期：1978-01-01 00:00:00

abstract：:The commonly used benzidine derivatives such as diaminobenzidine, o-dianisidine and benzidine dihydrochloride are apparently carcinogenic. Available information, however, indicates that tetramethyl benzidine (TMB) is safer in this regard, and we have therefore developed a procedure in which TMB is used as a substrate ...

journal_title：Neuroscience letters

authors： Hardy H,Heimer L

更新日期：1977-08-01 00:00:00

abstract：:The monoamine innervation of the organum vasculosum lamina terminalis (OVLT) was studied using fluorescence histochemistry and the autoradiographic tracing method. Fluorescence histochemistry demonstrates serotonin terminals in close proximity to the capillary plexus of the OVLT, in the same region where the apparent ...

journal_title：Neuroscience letters

authors： Moore RY

更新日期：1977-08-01 00:00:00

abstract：:The electron microscopic findings in cats after complete interruption of all afferents to caudate nucleus as well as of its efferent fibers, suggest that the type IX synapses, the presynaptic component of which contains large empty round vesicles, are formed by the axon terminals of intrinsic neurons. They make synapt...

journal_title：Neuroscience letters

authors： Hassler R,Chung JW,Wagner A,Rinne U

更新日期：1977-07-01 00:00:00