M Chokroverty

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In order to understand which neural elements are excited after percutaneous magnetic coil (MC) stimulation over the cervical vertebral column we have performed such study in 8 normal subjects and 4 patients. On moving the coil rostrocaudally up to 3 cm and horizontally up to 2 cm from the midline we found no change in the latencies of the compound muscle(More)
We describe the technique of magnetic coil (MC) stimulation of the lumbosacral roots and the possible site of stimulation in 22 control subjects, and the clinical usefulness of MC stimulation in 5 patients with low back pain. We observed 2 components in the compound muscle action potential of the soleus muscle following MC stimulation over the lumbosacral(More)
We describe a technique of percutaneous magnetic coil (MC) stimulation of the phrenic nerve trunk on one side of the neck and phrenic roots over the upper cervical vertebral column in 10 normal subjects and 2 patients. We were able to obtain compound muscle action potentials (CMAPs) from the diaphragm at two sites (xiphoid process and 7th intercostal space)(More)
Acetylcholinesterases in the muscle homogenates of hamsters receiving ACTH intraperitoneally for six weeks were reduced as compared to the activities in the control samples. In polyacrylamide disc gel electrophoresis of the ACTH-treated muscles some acetylcholinesterase bands were absent. These observations may be significant in explaining the ACTH-induced(More)
The fine structure of quadriceps motor end-plates in hamsters was analyzed quantitatively one, two, four, seven, and thirty-two weeks following intraperitoneal injections of prednisolone. Except for transient increases in postsynaptic length and membrane profile concentration after prednisolone administration at dosages of 4 mgper kilogram of body weight(More)
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