Mirror Movements
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. Mirror movements of the left arm following peripheral damage to the preferred right arm.
Cerebral damage which renders the preferred arm useless may lead patients to use their non-preferred arm for everyday tasks including writing. In these circumstances, mirror writing and other mirror movements may occur. The present study on 10 formerly right-handed patients was carried out to determine whether similar phenomena occurred when serious damage t
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14. Ataxic hemiparesis and mirror movements.
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15. PERSISTENT MIRROR-MOVEMENTS AS A HEREDO-FAMILIAL DISORDER
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16. Evidence for a contribution of the motor cortex to the long-latency stretch reflex of the human thumb.
1. In normal subjects, transcranial magnetic stimulation of the hand region of the motor cortex evokes motor responses only in contralateral hand muscles at a latency of about 19-24 ms. In contrast, stimulation of the motor cortex of three mirror movement subjects evoked, nearly simultaneously, motor responses in hand muscles on both sides of the body at lat
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17. Wildervanck or cervico-oculo-acoustic syndrome and MRI findings.
In 1952, Wildervanck described the first case of what he styled the cervico-oculo-acoustic (COA) syndrome. This comprises Klippel Feil's (KF) anomaly (congenitally fused cervical vertebrae), congenital sensorineural deafness and Duane's retraction syndrome (deficient abduction with retraction on adduction). Since that original paper, there have been further
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18. On the localization of the stretch reflex of intrinsic hand muscles in a patient with mirror movements.
1. The patient studied showed the typical mirror movements of the Klippel-Feil syndrome. Earlier intensive electrophysiological analysis suggests that many of her corticospinal axons branch abnormally to supply motoneurones on both sides of the spinal cord. Thus, in her, a long-latency reflex utilizing the motor cortex should manifest itself bilaterally. 2.
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19. Temporal dynamics of cortical representation for action
Brain-imaging studies have shown that the human Broca's region and precentral motor cortex are activated both during execution of hand actions and during observation of similar actions performed by other individuals. We aimed to clarify the temporal dynamics of this cortical activation by neuromagnetic recordings during execution, on-line imitation, and obse
The National Academy of Sciences.
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20. Learning by observation requires an early sleep window
Numerous studies have shown that sleep enhances memory for motor skills learned through practice. Motor skills can, however, also be learned through observation, a process possibly involving the mirror neuron system. We investigated whether motor skill enhancement through prior observation requires sleep to follow the observation, either immediately or after
National Academy of Sciences.
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21. Impairments in the learning and performance of a new manual skill in patients with Parkinson's disease.
Twelve patients with Parkinson's disease learned two novel skills in which they had to track a target by moving a joystick. In task 1 they had to learn to anticipate the movements of a semi predictable target. In task 2 they had to learn a novel control system in which the movements of the joystick were mirror reversed in relation to the computer screen. On
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22. Expression of the KAL gene in multiple neuronal sites during chicken development.
The human KAL gene is responsible for the X chromosome-linked Kallmann syndrome. A partial cDNA sequence from the chicken KAL homologue was determined and used to study expression of the KAL gene, by in situ hybridization, during chicken development, from day 6 of incubation. The KAL gene is mainly expressed in neurons of the central nervous system during th
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23. Mirror movements studied in a patient with Klippel-Feil syndrome.
1. Electromyographic (EMG) recordings have been made from upper limb muscles in a patient with well-defined congenital mirror movements occurring in association with Klippel-Feil syndrome and the results compared to those obtained in normal control subjects. 2. In the patient, liminal percutaneous electrical or magnetic brain stimulation applied over either
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24. Animal Models of Generalized Dystonia
Summary: Dystonia is a prevalent neurological disorder characterized by abnormal co-contractions of antagonistic muscle groups that produce twisting movements and abnormal postures. The disorder may be inherited, arise sporadically, or result from brain insult. Dystonia is a heterogeneous disorder because patients may exhibit focal or generalized symptoms as
The American Society for Experimental NeuroTherapeutics.