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Biomedical subjects

E S Luschei

Publications and source records attributed to E S Luschei.

66 records · Page 4Linked to original sources
PubMed1971

Development of isometric tension in simian extraocular muscle.

1. Isometric tension resulting from electrical stimulation of the abducens nerve was measured in the lateral rectus muscle of anaesthetized monkeys.2. The lateral rectus showed no increase in maximum tension at stimulus frequencies greater than 400/sec.3. However, at frequencies between 400 and 600/sec, the rate of change of tension increased so that maximum tension was achieved more rapidly.4. Rates greater than 600/sec caused no further increases in the rate of change of tension and actually resulted in a decrease of maximum tension.5. Since, in addition, single fibre recordings from ocular motor nerves reveal maximum discharge rates of less than 600/sec, units in the abducens nucleus that fire at greater than 600/sec are likely interneurones.6. Stimulation at rates of 30/sec, the frequency at which feline slow or slow twitch fibres produce fused contraction, produced no measurable tonic component of tension. Therefore, the force contributed by slow muscle fibres probably plays an insignificant role during eye movements.

Abducens Nerve↗
PubMedDate not supplied

Human and macaque mastication: a quantitative study.

Significant differences exist between human and Macaca fascicularis patterns of mandibular movement during mastication. Macaque patterns display less asymmetry, more uniformity, and limited lateral excursions when compared to humans for mastication of the same food. Different anatomical structures between the two species offer explanations of the different patterns that were observed. Researchers should use caution when using macaques as models for human mastication.

Animals↗