Abstract
Vocalis muscle tissue was dissected from live dogs and kept alive in Krebs‐Ringer solution for several hours. The temperature of the tissue was maintained at approximately 37 °C by a circulating fluid around the sample holder. Force‐elongation responses of the vocalis muscle under various levels of stimulated muscle activity were obtained through one‐dimensional stretch and release. Both force and elongation were monitored electronically with a Cambridge Technology Dual Servo System (ergometer), while stimulation was applied to the muscle with fine‐wire electrodes and a Grass stimulator. Families of force‐elongation curves for various frequencies of stimulation and various relaxation times are given, from which average elastic constants, such as Young's modulus, can be estimated. [Work supported by NINCDS.]
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