Abstract
Unilateral division of corticogeniculate connections increases the number of spikes in unit responses of the ipsilateral lateral geniculate body to receptive field stimulation and potentiates the effects of lateral inhibition. The area of the zone of complete summation of all lateral geniculate neurons recorded on the side of operation depends on contrast of the local photic stimulus. It is concluded that cortical fibers descending to the lateral geniculate body are inhibitory in nature and that the existence of receptive fields with a variable zone of spatial summation is due to intrageniculate mechanisms.
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Literature cited
A. S. Batuev, "Central apparatuses of visual function," Trudy Leningrad. Obshch. Estestvo.,77–80, 100 (1971).
V. D. Glezer, V. A. Ivanov, and T. A. Shcherbach, "Functional adjustments of receptive fields of the cat lateral geniculate body," Fiziol. Zh. SSSR,56, 1539 (1970).
V. D. Glezer, V. A. Ivanov, and T. A. Shcherbach, "Receptive fields of the cat lateral geniculate body," Neirofiziologiya,3, 131 (1971).
A. B. Kogan, O. T. Chorayan, and S. A. Chebkasov, "The evolution of neuronal associations in visual projection fields," Biol. Zh. Armenii,25, 153 (1972).
N. A. Lazareva and R. M. Meshcherskii, "Corticofugal control of unit activity in the lateral geniculate body," Dokl. Akad. Nauk SSSR,196, 990 (1971).
A. M. Mass and G. D. Smirnov, "Cortical control of conduction of excitation in the rabbit lateral geniculate body," Dokl. Akad. Nauk SSSR,196, 729 (1971).
R. M. Meshcherskii, "Corticofugal influences in the central component of the visual system," Author's Abstract of Doctoral Dissertation, Moscow (1966).
S. P. Narikashvili, "Some results of an electrophysiological study of cortical regulation of the activity of subcortical and brain-stem formations," Zh. Vyssh. Nerv. Deyat.,17, 925 (1967).
V. L. Silakov, "Descending regulatory cortical influences in the visual system," Zh. Vyssh. Nerv. Deyat.,19, 1044 (1969).
V. L. Silakov and É. G. Zarkeshev, "Effect of division of cortico-subcortical connections on spontaneous unit activity of the lateral geniculate bodies and visual cortex," Neirofiziologiya,4, 47 (1972).
V. L. Silakov, "Effect of division of descending cortical connections on effects of extracellular polarization of lateral geniculate neurons," Neirofiziologiya,4, 629 (1972).
V. L. Silakov, "Corticofugal control of unit responses of the cat lateral geniculate body," Neirofiziologiya,5, 367 (1973).
A. Ya. Supin, "The presence of corticothalamic connections in the rabbit's visual system," Zh. Vyssh. Nerv. Deyat.,18, 155 (1967).
M. M. Khananashvili, "An operation to block the function of the cerebral cortex," Fiziol. Zh. SSSR,47, 661 (1961).
M. M. Khananashvili, G. P. Obukhova, V. L. Silakov, and N. S. Burakova, "Data on the analysis of corticofugal influences on subcortical visual structures," in: Cortical Regulation of Activity of Subcortical Brain Formations [in Russian], Metsniereba, Tbilisi (1968), pp. 145–153.
M. M. Khananashvili, Mechanisms of Normal and Pathological Conditioned-Reflex Activity [in Russian], Nauka, Leningrad (1972).
A. Angel, F. Magni, and P. Strata, "Evidence for presynaptic inhibition in the lateral geniculate body," Nature,208, 495 (1965).
A. Angel, F. Magni, and P. Strata, "The excitability of optic nerve terminals in the lateral geniculate nucleus after stimulation of visual cortex," Acta Physiol. Physiol. Hung.,27, 130 (1967).
W. A. Beresford, "A nauta and gallocyanin study of the cortico-lateral geniculate projection in the cat and monkey," J. Hirnforsch.,5, 210 (1962).
P. O. Bishop, W. Burke, and R. Davis, "Single-unit recording from antidromically activated optic radiation neurons," J. Physiol. (London),162, 432 (1962).
L. J. Garey, E. G. Jones, and T. P. S. Powell, "Interrelationships of the visual striate and extra-striate cortex with the primary relay sites of the visual pathways," J. Neurol. Neurosurg. Psychiat.,31, 135 (1968).
R. M. Gaze and M. G. Keating, "The visual system and ‘neuronal specificity’," Nature,237, 375 (1972).
V. D. Glezer, N. F. Podvigin, A. M. Kuperman, V. A. Ivanov, and T. A. Tsherbach, "Investigations of receptive fields of cat's corpus geniculatum lateralis. Structural and functional model of the field," Vision Res.,12, 2073 (1972).
R. W. Guillery, "Patterns of fiber degeneration in the dorsal lateral geniculate nucleus," J. Comp. Neurol.,130, 197 (1967).
R. W. Guillery, "Light and electron microscopical observations on the laminar distribution of axon terminals in the lateral geniculate nucleus," J. Physiol. Soc. Jap.,32, 549 (1970).
E. Hull, "Corticofugal influences in the macaque lateral geniculate nucleus," Vision Res.,8, 1285 (1968).
R. E. Kalil and R. Chase, "Corticofugal influence on activity of lateral geniculate neurons in the cat," J. Neurophysiol.,33, 459 (1970).
K. Niimi, "Experimental-anatomical study on the corticogeniculate geniculo-cortical connections in the cat," J. Physiol. Soc. Jap.,32, 559 (1970).
W. Singer and N. Bedworth, "Inhibitory interactions between X and Y units in the cat lateral geniculate nucleus," Brain Res.,49, 291 (1973).
H. Suzuki and E. Kato, "Cortically induced presynaptic inhibition in cat's lateral geniculate body," Tohoku J. Exp. Med.,86, 277 (1965).
J. Szentàgothai, "Synaptic articulation in the thalamus and the geniculate body of descending cortical systems," in: Mechanisms of Normal and Pathological Conditioned-Reflex Activity [in Russian], Metsniereba, Tbilisi (1968), pp. 9–21
J. Szentagothai, "Neuronal and synaptic architecture of the lateral geniculate nucleus," in: Handbook of Sensory Physiology, Springer-Verlag, Berlin (1973), pp. 121–153.
E. F. Vastola, "Steady-state effects of visual cortex on geniculate cells," Vision Res.,7, 599 (1966).
L. Widen and C. Ajmone-Marsan, "Effects of corticopetal and corticofugal impulses upon single elements of the dorsolateral geniculate nucleus," Exp. Neurol.,2, 468 (1960).
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Institute of Experimental Medicine, Academy of Medical Sciences of the USSR, Leningrad. Translated from Neirofiziologiya, Vol. 7, No. 5, pp. 486–492, September–October, 1975.
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Silakov, V.L. Effect of removal of corticofugal influences on receptive fields of lateral geniculate neurons in the cat. Neurophysiology 7, 374–379 (1975). https://doi.org/10.1007/BF01067806
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DOI: https://doi.org/10.1007/BF01067806