Receptive fields of thalamic neurons projecting to the motor cortex in the cat
- PMID: 466472
- DOI: 10.1016/0006-8993(79)90534-1
Receptive fields of thalamic neurons projecting to the motor cortex in the cat
Abstract
The locations and receptive fields of thalamic neurons projecting to the motor cortex were examined and the following results were obtained. (1) Neurons located at the border area between nucleus ventralis lateralis (VL) and nucleus ventralis posterolateralis (VPL) could be activated antidromically from the motor cortex. (2) These neurons received topographically organized somesthetic inputs arising from skin and deep receptors. (3) The receptive fields of neurons in the small area of the motor cortex where these thalamic neurons projected could be examined in 8 instances. In 6 instances, the cortical neurons and the thalamic projection neurons were activated by exactly the same stimuli in the periphery. (4) Removal of the sensory cortex did not significantly change the characteristics of afferent inputs from the periphery to the motor cortex. (5) It is concluded that the motor cortex receives somesthetic inputs directly from the thalamus. The functional role of these inputs was discussed in relation to the known cortical reflexes.
Similar articles
-
Short-latency peripheral inputs to thalamic neurones projecting to the motor cortex in the monkey.Exp Brain Res. 1979 Aug 1;36(3):445-62. doi: 10.1007/BF00238515. Exp Brain Res. 1979. PMID: 113234
-
Mapping the effects of SI cortex stimulation on somatosensory relay neurons in the rat thalamus: direct responses and afferent modulation.Somatosens Mot Res. 1990;7(4):421-34. doi: 10.3109/08990229009144717. Somatosens Mot Res. 1990. PMID: 1963252
-
Functional organization of thalamic projections to the motor cortex. An anatomical and electrophysiological study in the rat.Neuroscience. 1986 Sep;19(1):81-99. doi: 10.1016/0306-4522(86)90007-2. Neuroscience. 1986. PMID: 3024065
-
Projection of forelimb group I muscle afferents to the cat cerebral cortex.Int Rev Neurobiol. 1972;15:1-25. doi: 10.1016/s0074-7742(08)60327-x. Int Rev Neurobiol. 1972. PMID: 4347727 Review. No abstract available.
-
Thalamic mechanism of pain: shell theory of thalamic nociception.Jpn J Physiol. 1989;39(3):335-48. doi: 10.2170/jjphysiol.39.335. Jpn J Physiol. 1989. PMID: 2507813 Review.
Cited by
-
Variety of functional organization within the monkey motor cortex.J Physiol. 1981 Feb;311:521-40. doi: 10.1113/jphysiol.1981.sp013602. J Physiol. 1981. PMID: 7264982 Free PMC article.
-
Specialized subregions in the cat motor cortex: anatomical demonstration of differential projections to rostral and caudal sectors.Exp Brain Res. 1984;53(2):259-76. doi: 10.1007/BF00238155. Exp Brain Res. 1984. PMID: 6200347
-
Short-and long-latency afferent inhibition of the human leg motor cortex by H-reflex subthreshold electrical stimulation at the popliteal fossa.Exp Brain Res. 2023 Jan;241(1):249-261. doi: 10.1007/s00221-022-06497-2. Epub 2022 Dec 8. Exp Brain Res. 2023. PMID: 36481937 Free PMC article.
-
The frontal agranular cortex and the organization of purposeful movements.Ital J Neurol Sci. 1985 Sep;6(3):287-315. doi: 10.1007/BF02232008. Ital J Neurol Sci. 1985. PMID: 3934109 Review.
-
Functional properties of monkey motor cortex neurones receiving afferent input from the hand and fingers.J Physiol. 1981 Feb;311:497-519. doi: 10.1113/jphysiol.1981.sp013601. J Physiol. 1981. PMID: 7264981 Free PMC article.
Publication types
MeSH terms
LinkOut - more resources
Full Text Sources
Miscellaneous