Abstract
Within the framework of the global description of somatotopical organization of the primate precentral cortex by Woolsey and his coworkers (16), studies were undertaken to examine the detailed motor and sensory organizations for the control of the forelimb. The techniques of single unit recordings in behaving primates after Evarts (6), and intracortical microstimulation (ICMS) of Asanuma and Sakata (5) were used. In these studies, we observed that within a cortical zone, which receives input from a joint at the periphery, or controls movements about a joint, neurons with similar input and output properties are organized in vertically arranged aggregates (8,9,15), an observation in agreement with previous reports (see ref. 1 for review). Each possible movement about a joint is in general represented multiply by clusters of aggregates in different regions within a joint zone. When zones from all joints were examined, we observed that a cortical zone controlling a more distal joint was partially enclosed by a zone controlling a more proximal joint, resulting in a nested organization with the finger zone in the middle, successive enclosures by the wrist and elbow zones and a shoulder zone at the perimeter (8). This same nested pattern was observed for sensory inputs as well (15). Further, we found a tight coupling between sensory inputs and motor outputs, with the coupling conforming to the same nested organization (9)
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References
ASANUMA, H. Recent developments in the study of the columnar arrangement of neurons within the motor cortex. Physiol. Rev., 55: 143–156, 1975.
ASANUMA, H., AND ARNOLD, A. P. Noxious effects of excessive currents used for intracortical microstimulation. Brain Res, 96: 103–107, 1975.
ASANUMA, H., AND ROSEN, I. Topographical organization of cortical efferent zones projecting to distal forelimb muscles in the monkey. Exp. Brain Res., 14: 243–256, 1972.
ASANUMA, H., AND ROSEN, I. Spread of mono and polysynaptic connections within cat’s motor cortex. Exp. Brain Res, 16: 507–520, 1973.
ASANUMA, H., AND SAKATA, H. Functional organization of a cortical efferent system examined with focal depth stimulation in cats. J. Neurophysiol., 30: 35–54, 1967.
EVARTS, E. V. Methods for recording activity of individual neurons in moving animals. In: Methods in Medical Research, edited by R. F. RUSHMER, Chicago: Year Book Medical Publishers, 1966, vol. 11, pp. 241–250.
GATTER, K. C., AND POWELL, T. P. S. The intrinsic connections of the cortex and area 4 of the monkey. Brain, 101: 513–541, 1978.
KWAN, H. C., MacKAY, W. A., MURPHY, J. T., AND WONG, Y. C. Spatial organization of precentral cortex in awake primates. II. Motor outputs. J. Neurophysiol, 41: 1120–1131, 1978.
MURPHY, J. T., KWAN, H. C., MacKAY, W. A., AND WONG, Y. C. Spatial organization of precentral cortex in awake primates. III. Input-output coupling. J. Neurophysiol, 41: 1132–1139, 1978.
ROSEN, I., AND ASANUMA, H. Peripheral inputs to the forelimb area of the monkey motor cortex: Input-output relations. Exp. Brain Res., 14: 257–273, 1972.
SCHEIBEL, M. E., AND SCHEIBEL, A. B. Elementary processes in selected thalamic and cortical subsystems—the structural sustrates. In: The Neurosciences Second Study Program, F. O. Schmidt, editor. New York: Rockefeller Univ. Press, 1970, p. 443–457.
SZENTAGOTHAI, J. The “modular concept” in cerebral cortex architecture. Brain Res, 95: 475–496, 1975.
SZENTAGOTHAI, J. The neuron network of the cerebral cortex: a functional interpretation. Proc. Roy. Soc., Lond.,B., 201: 219–248, 1978.
WOLBARSHT, M. L., MacNICHOL, E. F., Jr., AND WAGNER, H. C. Glass insulated platinum microelectrode. Science 148: 1309–1310, 1965.
WONG, Y. C., KWAN, H. C., MacKAY, W. A., AND MURPHY, J. T. Spatial organization of precentral cortex in awake primates. I. Somatosensory inputs. J. Neurophysiol, 41: 1107–1119, 1978.
WOOLSEY, C. N., SETTLAGE, P. H., MEYER, D. R., SENCER, W., PINTO HAMUY, T., AND TRAVIS, A. M. Patterns of localization in precentral and “supplementary” motor areas and their relation to the concept of a premotor area. Res. Publ. Assoc. Res. Nerv. Ment. Dis., 30: 238–264, 1952.
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Kwan, H.C., Murphy, J.T., Wong, Y.C. (1981). Spatial Organization of the Primate Precentral Cortex. In: Woolsey, C.N. (eds) Cortical Sensory Organization. Cortical Sensory Organization, vol 1. Humana Press. https://doi.org/10.1007/978-1-4612-5811-7_7
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DOI: https://doi.org/10.1007/978-1-4612-5811-7_7
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