منابع مشابه
The Grasp Reflex and Moro Reflex in Infants: Hierarchy of Primitive Reflex Responses
The plantar grasp reflex is of great clinical significance, especially in terms of the detection of spasticity. The palmar grasp reflex also has diagnostic significance. This grasp reflex of the hands and feet is mediated by a spinal reflex mechanism, which appears to be under the regulatory control of nonprimary motor areas through the spinal interneurons. This reflex in human infants can be r...
متن کاملThoughts About a Visually Guided Grasp Reflex
This paper describes a preliminary attempt to apply organizational principles taken from animal perceptual processes to the problem of providing a robot visual qrasp reflex. The goal is to provide a cheap, rapid mechanism for directinq a hand/arm to grasp one of several arb i t rar i ly shaped objects in the visual scene. A proqram which implements a simple form of such a reflex is described.
متن کاملAn Unusual Case of the Grasp Reflex, with Some Observations on the Volitional and Reflex Components.
IN 1927 Adie and Critchley, in their review of the grasp reflex, concluded that the closure of the hand following a stroke across the palm is an involuntary reflex response to a tactile stimulus. The whole hand, arm, or even the body may sometimes turn reflexly in the direction of the stimulus. " Forced groping and grasping " after objects merely coming into the neighbourhood of the hand they a...
متن کاملTestosterone and grasp-reflex differences in human neonates.
According to the Geschwind-Behan-Galaburda (GBG) hypothesis, prenatal testosterone (T) causes a slowing in the development of the left brain with a consequent compensatory growth in the right brain, creating a reverse organisation of the cerebral lateralisation. That is, left- and right-handedness might be associated with high and low prenatal T levels, respectively. To test this hypothesis, th...
متن کاملThe alien hand syndrome: What makes the alien hand alien?
The alien hand syndrome is a deeply puzzling phenomenon in which brain-damaged patients experience their limb performing seemingly purposeful acts without their intention. Furthermore, the limb may interfere with the actions of their normal limb. We report a case of alien hand syndrome following a left medial frontal and corpus callosum ischemic lesion. From our clinical observations and the pa...
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ژورنال
عنوان ژورنال: European Neurology
سال: 1996
ISSN: 0014-3022,1421-9913
DOI: 10.1159/000117203