Patterns of Rapid Motor Responses During Postural Adjustments When Standing in Healthy Subjects and Hemiplegic Patients

1983 ◽  
Vol 63 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Mary Beth Badke ◽  
Pamela W. Duncan

Stroke ◽  
2001 ◽  
Vol 32 (6) ◽  
pp. 1304-1309 ◽  
Author(s):  
Giovanna Alagona ◽  
Valérie Delvaux ◽  
Pascale Gérard ◽  
Victor De Pasqua ◽  
Giovanni Pennisi ◽  
...  


2018 ◽  
Vol 43 ◽  
pp. 21-27
Author(s):  
Wei-Chi Tsai ◽  
Hen-Yu Lien ◽  
Wen-Yu Liu ◽  
Siang-Lan Guo ◽  
Yang-Hua Lin ◽  
...  


Spinal Cord ◽  
2012 ◽  
Vol 50 (6) ◽  
pp. 432-439 ◽  
Author(s):  
M A Sabbahi ◽  
Y S Sengul


2002 ◽  
Vol 34 ◽  
pp. A105
Author(s):  
M. Corsetti ◽  
R. Vos ◽  
I. Demedts ◽  
J. Janssens ◽  
J. Tack


Spinal Cord ◽  
2010 ◽  
Vol 49 (6) ◽  
pp. 741-748 ◽  
Author(s):  
M A Sabbahi ◽  
Y S Sengul


1999 ◽  
Vol 9 (5) ◽  
pp. 303-325
Author(s):  
Gin McCollum

The sensory reafference from a movement depends upon the movement, and the movement chosen depends upon the available senses, as demonstrated by vestibular patients who abandon certain movements. Often, one variable is assumed to be dependent whereas the other is independent; however, sensory and motor dynamics in posture are interdependent as conditions upon each other. This paper applies conditional dynamics to characterize the global structure of interdependence between sensory states and motor strategies in fast postural adjustments. The mathematical formalism incorporates rich but disparate experimental, clinical, and theoretical results about sensory and motor control of posture. The control structures presented include relatively stable anatomical, physiological, and functional structures, both continuous and discrete, leading to a composite functional logic for the coordination of these structures in sensorimotor control. Results include sensorimotor control structures for postural adjustments for healthy subjects and certain types of vestibular patients. The sensorimotor control structures for patients with absent vestibular function suggest implications for management of the deficit.





Author(s):  
R. Chen

ABSTRACT:Cutaneous reflexes in the upper limb were elicited by stimulating digital nerves and recorded by averaging rectified EMG from proximal and distal upper limb muscles during voluntary contraction. Distal muscles often showed a triphasic response: an inhibition with onset about 50 ms (Il) followed by a facilitation with onset about 60 ms (E2) followed by another inhibition with onset about 80 ms (12). Proximal muscles generally showed biphasic responses beginning with facilitation or inhibition with onset at about 40 ms. Normal ranges for the amplitude of these components were established from recordings on 22 arms of 11 healthy subjects. An attempt was made to determine the alterent fibers responsible for the various components by varying the stimulus intensity, by causing ischemic block of larger fibers and by estimating the afferent conduction velocities. The central pathways mediating these reflexes were examined by estimating central delays and by studying patients with focal lesions



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