A TRANSCUTANEOUS SIGNAL TRANSMISSION SYSTEM FOR RATS MUSCLE ELECTRICAL STIMULATION
Tomita, S. Ikeda, Tanaka, Y. Okajima, A. Kimura, K. Mineo (Keio University, Tokyo, Japan)
Research on chronic effects of electrical muscle stimulation is important. A wireless stimulation device for rats has been developed. The primary coil is placed on the ceiling and under the floor of a rat cage. The secondary coil is implanted in rats. The secondary coil has a pair of electrodes that are placed on the tibialis anterior muscle bulb and on the deep tissue around the head of the fibula. The electrical load, i.e., the current of the secondary coil, is monitored with the wireless manner. The current of the secondary coil is controlled about 10 mA with the pulse width of 0.2 ms and 20 Hz repetition.
One leg of each rat was stimulated and the contralateral side was use as the control. The stimulation was exposed eight hours a day. The stimulation was continued for a week for one group of rats, and three weeks of the other group. The remarkable type change of the muscle was observed in three week stimulation group(from types 1:6%, 2A: 17%, 2B:77% to types 1:27%, 2A:71%, 2B:2%)
TRENDS IN ELECTRICAL STIMULATION RESEARCH AND PRACTICE
Crt Marincek (Institute for Rehabilitation, Ljubljana, Slovenia)
Functional electrical stimulation is routinely used in Ljubljana Rehabilitation Institute for patients with upper motor neuron lession (like stroke, spinal cord 'injury, cerebral palsy). There are new achievements in technical design, hardware and software.
Electrical stimulation has also other fields of interest in order to improve gait of patients with above knee amputation or to improve respiration in patients with respiratory disorders. The experience of research flora Ljubljana Rehabilitation Institute will be presented.