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J Appl Physiol 84: 2171-2176, 1998;
8750-7587/98 $5.00
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Vol. 84, Issue 6, 2171-2176, June 1998

SPECIAL COMMUNICATION
A stimulating nerve cuff for chronic in vivo measurements of torque produced about the ankle in the mouse

Gordon L. Warren, Christopher P. Ingalls, and R. B. Armstrong

Muscle Biology Laboratory, Texas A&M University, College Station, Texas 77843

Specific muscle training and chronic contractile measurements are difficult in rodents, especially in the mouse. The primary reason for this is the lack of a means for stimulating the motor nerve that does not damage the nerve and that permits reproducible measurements of contractility. In this paper, we describe procedures for the construction and implantation of a stimulating nerve cuff for use on the mouse common peroneal nerve. We demonstrate that nerve cuff implantation success rates can be high (i.e., 75-93%), as determined from measurements of maximal isometric torque produced by the anterior crural muscles. Isometric torque production is not adversely affected by the nerve cuff because the torque produced matches that observed in our established percutaneous stimulation model. We also demonstrate that use of the nerve cuff for stimulation is compatible with electromyographic measurements made on the tibialis anterior muscle, with no sign of stimulation artifact in the electromyographic signal.

muscle contraction; electrical stimulation; electromyography


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