[Study of the natural activity of nerve fibers using the method of multi-channel coherent recording]

Spontaneous electrical activity was recorded with a six channel amplifier from the intact vagal nerve (cervical area) of the cat in acute experiments. The records obtained were summated using different delays between them induced by a computer for differentiation of the afferent activity from the efferent one and estimation of the proper conduction velocity. It is found that the most active afferent fibres have conduction velocity about 25 m/s.