Elektrophysiologische Untersuchungen an der Seitenlinie vonXenopus laevis

Summary Electrophysiological recording of the spontaneous activity from a single group of lateral sense organs on the abdomen ofXenopus laevis results in a more or less regular series of large spikes, either all of the same height or of two different sizes (each group is innervated by two large lateralis fibres). Mechanical stimulation of such a group may cause a rise or a fall of spontaneous impulse frequency. There is evidence for a two-directional sensitivity of the same unit (nerve fibre) from a single group, out of the middle as well as out of the dorsal lateral line.