Cornelis J. van Groeningen

Learn More
We studied motor-unit recruitment and decruitment thresholds in the three heads of the human elbow extensor, the triceps brachii muscle (caput mediale and laterale, both mono-articular heads, and caput longum, the bi-articular head) by means of intramuscular electromyographic-recordings. Two experiments were performed: an 'isometric' and a 'movement'(More)
In the literature less than 100 cases of metastatic carcinoma of the palatine tonsil have been reported. Tonsillar metastasis of adenocarcinoma of the oesophagus has not been reported previously. We report a case of a 57-year-old male with a primary adenocarcinoma of the distal esophagus with a metastasis in the right palatine tonsil. Metastatic tumour(More)
By means of intramuscular electromyographic recordings, we studied the firing frequencies and recruitment/decruitment thresholds of individual motor units in two elbow flexors, the biarticular biceps brachii muscle and the monoarticular brachioradialis muscle. Subjects had to perform isometric contractions with increasing elbow flexion torque until a(More)
The interspike interval histogram of spontaneously firing electroreceptor organs of freshwater catfish (Ictalurus nebulosus LeS.) fits well with the probability density function of a gamma distribution. The shape parameter r of this probability density function can be used as a measure for the firing threshold of the spike generator, and the scale parameter(More)
  • 1