共查询到20条相似文献,搜索用时 156 毫秒
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Neuroscience and Behavioral Physiology - 相似文献
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S. V. Alekseenko S. N. Toporova V. E. Gauzel'man F. N. Makarov 《Neuroscience and behavioral physiology》1998,28(2):211-217
Studies were carried out on the organization of the internal connections of the striate cortex in cats in the projection zone
of the center (0–5°) of the field of vision by microintophoretic application of horseradish peroxidase to electrophysiologically
identified orientational columns. The area containing neurons showing retrograde labeling in most cases extended in the mediolateral
direction. Labeled cells were located in the upper (II, III) and lower (V, VI) layers of the cortex, and the shapes and orientations
of the areas containing labeled neurons in these layers coincided. Spatial asymmetry was detected in the distribution of labeled
neurons relative to the orientational column studied. Labeled cells were located predominantly medial to the columns, regardless
of the distance from the projection of the area centralis. Considering the visuotopical map of field 17, the asymmetry detected
here provides evidence that neurons in orientational columns have more extensive connections with neurons of the peripheral
part of the cortex. An asymmetrical distribution of “silent” zones around the receptive fields of neurons in orientational
columns is suggested, and that these appear to receive influences from the periphery of the visual field.
Laboratory of Visual Physiology and Laboratory of Central Nervous System Morphology, I. P. Pavlov Institute of Physiology,
Russian Academy of Sciences, 6 Makarov Bank, 199034 St. Petersburg, Russia. Translated from Fiziologicheskii Zhurnal imeni
I. M. Sechenova, Vol. 82, No. 12, pp. 23–29, December, 1996. 相似文献
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T V Savvina D F Blagovidov M V Danilov V S Pomelov V A Vishnevski? 《Arkhiv patologii》1984,46(4):57-63
Seventy pancreatoduodenal complexes of 55 patients with chronic pancreatitis and tumours of this zone and 15 patients died from other diseases are studies histotopographically . The pieces of the pancreatic head tissue in the medial wall of the duodenum were found in 12 cases of the first group and in 4 control cases. The pancreatic tissue consisted either of all elements of this organ or cystically dilated ducts and seemed to infiltrate different layers of the duodenum wall. Three variants of the pancreatic head structure are suggested on the basis of anatomo-topographical interrelationships of the pancreatic head and duodenum. In 12 out of 14 cases chronic pancreatitis and carcinoma of organs of this zone were combined with the variants of the pancreatic head structure, in 2 cases there was a true heterotopy . Pathogenetic significance of these variants for the development of chronic pancreatitis is discussed. 相似文献
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P. V. Gusev 《Neuroscience and behavioral physiology》1996,26(3):266-272
The influence of the level of the transmembrane potential on the dynamics of the extinction of the amplitudes of summary excitatory
postsynaptic currents arising in identified giant parietal neurons in response to rhythmic stimulation of the intestinal nerve
was investigated in a preparation of the isolated CNS of the common snail in order to identify the possibility of the participation
of the postsynaptic element in synaptic plasticity. It was demonstrated that, at a greater value of the transmembrane potential,
the decrease in the amplitudes of the postsynaptic currents which have been induced by rhythmic stimulation takes place more
rapidly. It was also demonstrated that at a higher frequency of stimulation of the nerve, the effect of the influence of the
membrane potential level on the dynamics of the synaptic reactions is more prominent. The data obtained may be regarded as
an argument in favor of the possibility of the participation of the post-synapse in plasticity.
This study was partially supported by the Russian Basic Research Fund (project No. 94-04-12209).
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow. Translated from Zhurnal Vysshei
Nervnoi Deyatel'nosti imeni I. P. Pavlova, Vol. 45, No. 1, pp. 171–179, January–February, 1995. 相似文献
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The effects of the lesion of the postcommissural part of the septum on behavior of the rat has been studied. Results may be summarized as follows. An increase in the exploratory behavior in the open field which decreases rapidly; a decrease in the number of defecations in this test and a decrease in time leaving a dark environment for exploration. In the shuttle box test, no facilitation of the acquisition, but a permanent and quite significant increase in the intertrial activity has been found. We conclude that the lesions tend to decrease the emotivity of the subjects. An interpretation on the basis of the species -- specific defensive reactions explains the transitory and permanent effects of the lesions on the spontaneous activity. 相似文献
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L. M. Kurilova 《Bulletin of experimental biology and medicine》1964,57(3):251-253
Summary A discussion is presented of the effect produced by light stimulation applied to the optic analyzer alone on the function of the temperature analyzer. The cutaneous-temperature analyzer was kept on constant illumination and temperature. The light effects from the retinal photoreceptors on the cutaneous thermoceptor system led to reflex changes of the functional rate of the latter. Conditions of the optic analyzer of light adaptation caused reflex adjustment of cold receptors as to heating. Dark adaptation of the eyes changed the functional state of the cold receptors, corresponding to their adjustment to low temperatures.(Presented by Active Member AMN SSSR V. V. Parin) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 57, No. 3, pp. 3–6, March, 1964 相似文献
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A. V. Mikhailov 《Neuroscience and behavioral physiology》1995,25(2):111-116
The specific character of the relationship of the baseline cellular activity of the caudate nucleus to the features of the
impulse activity of the centrum medianum of the thalamus has been identified in chronic microelectrode experiments. Reciprocal
changes in the bioelectrical activity were recorded in the first group of cells, with a low action potential repetition frequency,
while unidirectional changes with reorganizations in the intralaminar nucleus were recorded in the second. The activation
of the cells of the centrum medianum of the thalamus was accompanied during the formation of an instrumental conditioned defense
reflex by the formation of a pattern of impulse activity in neurons of the neostriatum which coincided in sign with the reorganizations
which were characteristic during the investigation of the baseline activity. It is hypothesized that the features of the internal
structure of the caudate nucleus underlie such a relationship.
Laboratory of Physiology of Higher Nervous Activity, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, Saint
Petersburg. Translated from Fiziologicheskii Zhurnal imeni I. M. Sechenova, Vol. 80, No. 1, pp. 102–108, January, 1994. 相似文献
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Gavril Aculugaritei 《Medical hypotheses》1977,3(5):211-214
There are elementary and complex types (combined elementary types): of temporospatial relations between the pattern of development of the organism and the patterns of development of individual subsystems; of influences exercised by the development of the organism upon the development of the subsystems of the organism; of influences exercised by the development of individual subsystems upon individual development; of temporospatial relations between the stability of the line of individual development and the stability of the line of development of individual subsystems; of mutual influence between the stability and variation of the line of individual development, on the one hand, and the stability and variation of the line of development of the individual subsystems, on the other. 相似文献