References
Bigland, B. andLippold, O. C. J. (1954) Motor unit activity in voluntary contraction of human muscle.J. Physiol. 125, 322–335.
Brown, G. L. andBurns, B. D. (1949) Fatigue and neuromuscular block in mammalian skeletal muscle.Proc. R. Soc. Ser. B. 136, 182–196.
Buller, A. J. andLewis, D. M. (1965) The rate of tension developed in isometric tetanic contractions of mammalian fast and slow skeletal muscle.J. Physiol. 176, 337–354.
Griller, S. (1972) The role of muscle stiffness in meeting the changing post and locomotor requirements for force development by the ankle extensors.Acta Physiol. Scand. 86, 92–108.
Lind, A. R. andPetrofsky, J. S. (1978) Development of tension in fast and slow muscles in the cat during asynchronous stimulation.Nerve-Muscle. (In press).
Naumann, S. andMilner, M. (1978) A sequential stimulator for electrical restoration of the micturition reflex.Biomed. Eng. 25, 307–311.
Nichols, T. R. andHouk, J. C. (1976) Improvement in linearity and regulation of stiffness that results from actions of stretch reflex.J. Neurophysiol. 37, 119–143.
Milner-Brown, H. S. andStein, R. B. (1975) The relation between the surface electromyogram and muscular force.J. Physiol. (London)246, 549–569.
Peckam, P. H. (1976) Control of contraction strength of electrically stimulated muscle by pulse width and frequency modulation.Eng. in Med. & Biol. 18, 166.
Petrofsky, J. S. (1978) Control of the recruitment and firing frequencies of motor units in electrically stimulated muscles in the cat.Med. & Biol. Eng. & Comput. 16, 302–308.
Petrofsky, J. S. (1979) Sequential motor unit stimulation through peripheral motor nerves in the cat.Med. & Biol. Eng. & Comput. 17, 87–93.
Petrofsky, J. S. andLind, A. R. (1978) Isometric endurance in fast and slow muscles in the cat.Am. J. Physiol. (In press.)
Rack, P. M. H. andWestbury, D. R. (1969) The effects of stimulus rate on tension in isometric contraction of the cat soleus muscle.J. Physiol. 204, 443–460.
Timm, G. W. andBradley, W. E. (1969) Electrostimulation of the uninary detrusor to effect contraction and evaculation.Invest. Urol. 6, 562–568.
Timm, G. W. andBradley, W. E. (1971) Electromechanical restoration of the micturition reflex.Biomed. Eng. 18, 274–280.
Timm, G. W. andBradley, W. E. (1973) Technologic and biologic considerations in neuro-urologic prosthesis development.Biomed. Eng. 20, 208–212.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Petrofsky, J.S. Digital-analogue hybrid 3-channel sequential stimulator. Med. Biol. Eng. Comput. 17, 421–424 (1979). https://doi.org/10.1007/BF02443837
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02443837