| stereotypic movement disorder | Motor behaviour that is repetive, often seemingly driven, and nonfunctional. This behaviour markedly interfers with normal activities or results in severe bodily self-injury. The behaviour is not due to the direct physiological effects of a substance or a general medical condition. (dsm-IV, 1994) (12 Dec 1998) |
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| extrapyramidal | Outside of the pyramidal tracts. (18 Nov 1997) |
| extrapyramidal cerebral palsy | <neurology> A derangement marked by ceaseless occurrence of slow, sinuous, writhing movements, especially severe in the hands and performed involuntarily, it may occur after hemiplegia and is then known as posthemiplegic chorea. Synonym: mobile spasm. Origin: Gr. Athetos = not fixed (13 Nov 1997) |
| extrapyramidal disease | A general term for a number of disorders caused by abnormalities of the basal ganglia or certain brain stem or thalamic nuclei; characterised by motor deficits, loss of postural reflexes, bradykinesia, tremor, rigidity, and various involuntary movements. Synonym: extrapyramidal motor system disease. (05 Mar 2000) |
| extrapyramidal dyskinesias | Abnormal involuntary movements attributed to pathological states of one or more parts of the striate body and characterised by insuppressible, stereotyped, automatic movements that cease only during sleep; e.g., Parkinson's disease; chorea; athetosis; hemiballism. (05 Mar 2000) |
| extrapyramidal effect | A combination of neurologic effects which includes tremors, chorea, athetosis and dystonia. A common side effect of neuroleptic agents (phenothiazines). Other medications known to cause these reactions include haloperidol, molindone, perphenazine & amitriptyline, loxapine, pimozide and rarely, benzodiazepines. (27 Sep 1997) |
| extrapyramidal motor system | Literally: all of the brain structures affecting bodily (somatic) movement, excluding the motor neurons, the motor cortex, and the pyramidal (corticobulbar and corticospinal) tract. Despite its very wide literal connotation, the term is commonly used to denote in particular the striate body (basal ganglia), its associated structures (substantia nigra; subthalamic nucleus), and its descending connections with the midbrain. (05 Mar 2000) |
| extrapyramidal motor system disease | A general term for a number of disorders caused by abnormalities of the basal ganglia or certain brain stem or thalamic nuclei; characterised by motor deficits, loss of postural reflexes, bradykinesia, tremor, rigidity, and various involuntary movements. Synonym: extrapyramidal motor system disease. (05 Mar 2000) |
| extrapyramidal syndrome | <syndrome> Abnormalities of movement related to injury of motor pathways other than the pyramidal tract. (05 Mar 2000) |
| active movement | Movement effected by the organism itself, unaided by external influences. (05 Mar 2000) |
| adversive movement | A rotation of the eyes, head, or trunk about the long axis of the body. (05 Mar 2000) |
| ameboid movement | The movement characteristic of leukocytes and protozoan organisms of the superclass Rhizopoda. See: streaming movement, filopodium, lobopodium. (05 Mar 2000) |
| amoeboid movement | <cell biology> Crawling movement of a cell brought about by the protrusion of pseudopods at the front of the cell (one or more may be seen in monopodial or polypodial amoebae, respectively). The pseudopods form distal anchorages with the surface. (05 Feb 1998) |
| assistive movement | In massage, a movement which the partially paralysed muscle of the patient would be unable to perform unaided but which is effected with the graduated assistance of the operator. (05 Mar 2000) |
| Bennett movement | The bodily lateral movement or lateral shift of the mandible during a laterotrusive movement. (05 Mar 2000) |