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Biomedical subjects

A Eberstein

Publications and source records attributed to A Eberstein.

At least 37 records · Page 2Linked to original sources
PubMed1978

Computer analysis in clinical electromyography.

Electromyographic findings are traditionally evaluated in terms of the duration, amplitude and shape of the myoelectric potentials as well as the pattern of discharge. Unfortunately, the evaluation is frequently dependent on the examiner's subjective observations with the result that mild, early cases or variations in the typical symptoms of the disease may be missed. To overcome these deficiencies, various approaches employing either analog or digital computer techniques have been explored. Programs have ranged from recognition and measurement of motor unit potentials to quantification of the interference pattern. Studies have also compared completely automatic analysis with operator-computer interaction and measurements performed manually. It is evident that the general format is still in the developmental stage. The prime need at the present time, however, is not only for quantification of the electromyogram but for innovative approaches which will expand our knowledge and increase diagnostic accuracy.

Action Potentials↗
PubMed1976

Mercury poisoning in a dentist.

We examined a dentist with chronic elemental mercury poisoning electrophysiologically. Motor conduction in the upper and lower limbs was normal. Sensory nerve action potentials in the ulnar and median nerves were normal, but could not be elicited in the superfical peroneal nerves. Conduction velocity of the sural nerves was normal, but the action potential amplitude was abnormal. Following treatment with penicillamine, sensory conductions in the lower limbs returned to normal.

Dentistry↗
PubMedDate not supplied

Experimental myotonia induced in denervated muscles by 2,4-D.

Rats were denervated in one hind limb and injected with 2,4-dichlorophenoxyacetic acid (2,4-D). Isotonic tetanic contractions of the muscles treated with 2,4-D after more than 10 days of denervation revealed prolonged relaxation times similar to those of the intact side and characteristic of clinical myotonia. No myotonic discharges were observed in the muscles denervated for more than 10 days and treated with 2,4-D. The increase in threshold for action potential generation secondary to denervation is suggested as the factor limiting the initiation of the repetitive discharges.

2,4-Dichlorophenoxyacetic Acid↗