| motor | <neurology, physiology> A muscle, nerve or centre that effects or produces movement. (18 Nov 1997) |
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| motor abreaction | The release of an unconscious thought, idea, or impulse through motor or muscular expression. (05 Mar 2000) |
| motor activity | The physical activity of an organism as a behavioural phenomenon. (12 Dec 1998) |
| motor agraphia | Agraphia due to muscular incoordination. (05 Mar 2000) |
| motor amusia | Inability to produce music. (05 Mar 2000) |
| motor aphasia | A type of aphasia in which there is a deficit in speech production or language output, often accompanied by a deficit in communicating by writing, signs, etc. The patient is aware of his impairment. Synonym: anterior aphasia, ataxic aphasia, Broca's aphasia, expressive aphasia, nonfluent aphasia. (05 Mar 2000) |
| motor apraxia | An inability to make movements or to use objects for the purpose intended. Synonym: cortical apraxia, innervation apraxia, limb-kinetic apraxia. (05 Mar 2000) |
| motor area | Area of the frontal lobe concerned with primary motor control. It lies anterior to the central sulcus. (12 Dec 1998) |
| motor ataxia | Ataxia developing upon attempting to perform coordinated muscular movements. Synonym: kinetic ataxia. (05 Mar 2000) |
| motor cell | A neuron whose axon innervates peripheral effector cell's such as muscle fibres or gland cell's. (05 Mar 2000) |
| motor cortex | Area of the frontal lobe concerned with primary motor control. It lies anterior to the central sulcus. (12 Dec 1998) |
| motor dapsone neuropathy | A peripheral neuropathy due to ingestion of 4,4-deaminodiphenylsulphone. (05 Mar 2000) |
| motor decussation | The intercrossing of the bundles of the pyramidal tracts at the lower border region of the medulla oblongata. Synonym: decussatio pyramidum, decussatio motoria, motor decussation. (05 Mar 2000) |
| motor endplate | The specialised postsynaptic region of a muscle cell. The motor endplate is immediately across the synaptic cleft from the presynaptic axon terminal. Among its anatomical specializations are junctional folds which harbor a high density of cholinergic receptors. See: neuromuscular junction (12 Dec 1998) |
| motor fibres | Nerve fibre's that transmit impulses that activate effector cells, e.g., in muscle or gland tissue. (05 Mar 2000) |
| asymmetric motor neuropathy | Neuropathy in which the loss of function is more marked in the extremities of one side of the body, old term for diabetic polyradiculopathy. (05 Mar 2000) |
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| autonomic motor neuron | See: motor neuron. (05 Mar 2000) |
| autonomic motor neurons | (preganglionic neuron's), by contrast, innervate smooth muscle fibres or glands only by the intermediary of a second, peripheral, neuron (postganglionic or ganglionic m. Neuron) located in an autonomic ganglion. See: motor endplate, autonomic nervous system. Synonym: anterior horn cell, motoneuron. (05 Mar 2000) |
| Bender Visual Motor Gestalt test | <psychology> A psychological test used by neurologists and clinical psychologists to measure a person's ability to visually copy a set of geometric designs. It consists of nine geometric designs on cards. The subject is asked to redraw them from memory after each one is presented individually. It is useful for measuring visuospatial and visuomotor coordination to detect brain damage. Synonym: Bender Visual Motor Gestalt test. (14 Aug 2000) |
| gamma motor neurons | The reflex arc consisting of small anterior horn cells and neuroma, their small fibres projecting to the intrafusal bundle producing its contraction, which initiates the afferent impulses that pass through the posterior root to the anterior horn cells, inducing a stretch reflex. Synonym: gamma motor neurons, gamma motor system, Granit's loop. (05 Mar 2000) |
| gamma motor system | The reflex arc consisting of small anterior horn cells and neuroma, their small fibres projecting to the intrafusal bundle producing its contraction, which initiates the afferent impulses that pass through the posterior root to the anterior horn cells, inducing a stretch reflex. Synonym: gamma motor neurons, gamma motor system, Granit's loop. (05 Mar 2000) |
| ganglionic motor neuron | See: motor neuron. (05 Mar 2000) |
| major motor seizure | A grand mal seizure or other convulsive seizure. (05 Mar 2000) |
| visceral motor neuron | See: motor neuron. (05 Mar 2000) |
| minor motor seizure | Old term for nonconvulsive seizure seen in patients with secondary generalised epilepsies. (05 Mar 2000) |
| plastic motor | An artificial point of attachment on an amputation stump to which is fastened the cord or extensor by which movement is transmitted to an artificial limb; used in cinematization. (05 Mar 2000) |
| postganglionic motor neuron | See: motor neuron. (05 Mar 2000) |
| preganglionic motor neuron | See: motor neuron. (05 Mar 2000) |
| hydraulic motor | By altering the internal osmotic pressure within a cell, water will enter and a considerable expansion of the compartment will occur. This has been used as a motor device in plants (turgor pressure), in eversion of nematocysts and possibly in the production of other cellular protrusions. (18 Nov 1997) |
| somatic motor neuron | See: motor neuron. (05 Mar 2000) |