Antennal motion evoked by electrical stimulation of extrinisic antennal muscles in tethered moths.

<p>(<b>A</b>) Changing the stimulus frequency of a 3 V, 50% duty-cycle pulse train of 200 ms duration leads to changes in antennal motion: Increasing stimulus frequency leads to an increase in antennal deflection amplitude. (<b>B</b>) Antennal deflection amplitudes of 8 animals to 12 consecutive electrical stimulation events of extrinsic muscles. For each animal, the deflection amplitudes are normalized to the mean deflection for all 12 stimulus repeats. There is no significant difference between deflection amplitudes elicited by the first compared to the last stimulus trains (gray boxes; t-test p = 0.78). Likewise, linear fits to each animal's responses show a negligible trend in any direction. The overall mean slope for all fits is 0.003/stimulus event (S.D. = 0.043).