Die Informationsverarbeitung tympanaler Rezeptorelemente vonLocusta migratoria (Acrididae, Orthoptera)

摘要: 1. The reactions of tympanic nerve fibers ofLocusta migratoria were recorded by glass microelectrodes in the metathoracic ganglion. 2. The units classified frequency-, intensity-, and directional characteristics as well their response pattern. The to speciesspecific song is compared with ofEphippiger ephippiger. 3. The physiological properties lead a classification into three types low-frequency neurons (characteristic frequency 3.5–4 kHz; 4kHz; 5.5–6 kHz) one type high-frequency neuron (12–20 kHz). This similar other species (Gray, 1960, Michelsen, 1971). 4. Intensity-coding done sharp rising intensity different absolute thresholds units. 5. There marked sensitivity some differences between LF HF units. In low range tympanal organ seems react pressure gradient receiver; for high frequencies another mechanism discussed. 6. No filtering species-specific takes place at level receptor cells.