Fig. 6. (A,B) Electrical stimulation of afferent antennal nerves during intracellular recordings from DBNc1-2/c2-2 (A) and DBNc2-3 (B). (A) Stimulation of N2B (carrying the axons from the scapal chordotonal organ) elicited spikes in DBNc1-2/c2-2 at latencies of approximately 2.5ms. Increasing the stimulus strength from 4 to 6V resulted in an increase in spike count per stimulus and better synchronisation of the first spike. (B) DBNc2-3 received strongest inputs (spikes, marked by an arrow, and excitatory postsynaptic potentials) upon electrical stimulation of N1 in the distal scape, suggesting input from pedicellar proprioceptors. Stimulation of N1 in the third/fourth flagellar segment and of N2B were not effective.