Are the hindwing chordotonal organs elements of the locust flight pattern generator

摘要: 1. Anatomical and electrophysiological techniques were used to examine the structure, central nervous connections discharge patterns of afferents arising from hindwing chordotonal organs in locust, Locusta migratoria . 2. 2. The organ found be sensitive lowfrequency sounds (approx. 3 kHz) vibrations supporting surface. During flight tethered animals these strongly activated. This flight-related activity was weakly modulated maximum occurred between depressor bursts. 3. 3. Low-frequency sound pulses activate selectively during rhythmic deefferented preparations (all motor nerves cut). Phasic stimulation organs, time-locked every cycle, had no effect on frequency centrally generated rhythm as recorded proximal nerve stumps. 4. 4. Staining single showed that they bifurcate metathoracic ganglion, with one branch terminating ring tract other projecting mesothoracic ganglion via ipsilateral connective. None terminal processes observed located dorsal neuropile regions containing neurones. Consistent this finding, not make synaptic interneurones or motoneurones. 5. 5. main conclusion investigation is do contribute patterning for flight. probably function detectors vibration perhaps low-frequency sound.