منابع مشابه
Arterial vascularization of primary motor cortex (precentral gyrus).
BACKGROUND The precentral gyrus (PG) is the primary motor area and is one of the most eloquent brain regions of neurosurgical interest. Although the arterial supply to the PG is generally known, contributions from different arterial branches such as the anterior cerebral artery (ACA), posterior cerebral artery (PCA), and middle cerebral artery (MCA) have not been comprehensively studied. The ai...
متن کاملHomeland defense begins in precentral cortex. Focus on "Sensorimotor integration in the precentral gyrus: polysensory neurons and defensive movements".
The reaction of a major league baseball player to a high velocity pitch differs from that of an average individual in a way that transcends mere skill. If most of us are put in the flight path of a 90 mi/h baseball, our response will look qualitatively unlike that of an experienced professional. Rather than produce a welltimed and well-placed swing of a baseball bat, we would more than likely c...
متن کاملComplex Movements Evoked by Microstimulation of Precentral Cortex
Electrical microstimulation was used to study primary motor and premotor cortex in monkeys. Each stimulation train was 500 ms in duration, approximating the time scale of normal reaching and grasping movements and the time scale of the neuronal activity that normally accompanies movement. This stimulation on a behaviorally relevant time scale evoked coordinated, complex postures that involved m...
متن کاملMotor Cortex
M1 has been identified in several mammals, but most information comes from monkeys, cats, raccoons, rats, and humans. In each, five characteristics serve to define M1: (1) electrical stimulation there evokes movements with relatively low levels of electrical current, usually less than needed in other cortical fields; (2) it lacks a clearly identifiable internal granular layer, layer 4, and ther...
متن کاملCharacteristics of the somatic afferent projection to the precentral cortex in the monkey.
The afferent evoked electrical response in preceutrai and postceutrai cerebral cortex was studied in anesthetized and unanesthetized monkeys. Responses to nerve vo~eys were obtained on both sides of the central SUICUS, tactile evoked responses were limited to the contralateral postcentralgyrus. Precentral responses were evoked bystirnulationof the fast cutaneous and slow muscle afferent fibers....
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ژورنال
عنوان ژورنال: Journal of Neuropathology and Experimental Neurology
سال: 1945
ISSN: 0022-3069
DOI: 10.1097/00005072-194501000-00010