Electrophysical Study of Signal Transmission by Unmyelinated and Myelinated Axons of Neurons
نویسندگان
چکیده
Electrophysical study is given for signal transmission characteristics with the axon in neurons. Electrical analysis was done under voltage equilibrium and current continuity conditions. Inductance L and capacity C per unit length are obtained for lossless axon. Attenuation, phase rotation, and phase (signal) velocity are given for axon with loss. It is then presented that higher velocity and wideband signal transmission are realized by reduction of C and L by myelination and large cross section of axons. Loss and phase rotation per unit length are also obtained for axon with serial resistance r and parallel conductance g. Long distance transmission is found available by reduction of serial resistance r and parallel conductance g by voltage dependent Na+ channels distributed at unmyelinated parts of axons. Keywords—Electrophysical study of axon, unmyelinated axon, myelinated axon, voltage equilibrium, current continuity, velocity and bandwidth, attenuation, phase rotation.
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