Generating precise mechanical stimuli and recording chordotonal organ discharge patterns using a microcomputer

A computer-controlled system for the investigation of the response properties of the tibio-femoral chordotonal organ in the locust is described. The computer is used to generate small amplitude sinusoidal movements of the tibia via a small servo-controlled motor. The resulting response recorded via a suction electrode is simultaneously detected, processed and stored on disk. Full constructional details for all hardware required are given. The software, developed for a BBC microcomputer, in addition to controlling all the hardware, has graphics and analysis routines enabling the operator to display and manipulate the stored data.