scholarly journals Cervical multisegmental motor responses in healthy subjects

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



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


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


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



1969 ◽  
Vol 12 (1) ◽  
pp. 179-184 ◽  
Author(s):  
Richard R. Martin ◽  
Gerald M. Siegel

Seventy-two college students were divided into three groups: Button Push-Speech (BP-S), Speech-Button Push (S-BP), and Control. BP-S subjects pushed one of two buttons on signal for 8 min. During the last 4 min, depression of the criterion button caused a buzzer to sound. After the button-push task, subjects spoke spontaneously for 30 min. During the last 20 min, the buzzer was presented contingent upon each disfluency. S-BP subjects were run under the same procedures, but the order of button-push and speech tasks was reversed. Control subjects followed the same procedures as S-BP subjects, but no buzzer signal was presented at any time. Both S-BP and BP-S subjects emitted significantly fewer disfluencies during the last 20 min (Conditioning) than during the first 10 min (Baserate) of the speaking task. The frequency of disfluencies for Control subjects did not change significantly from Baserate to Conditioning. In none of the three groups did the frequency of pushes on the criterion button change significantly from minute to minute throughout the 8-min button-push session.





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