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Fig. 3. Effects of varying L-glutamate (L-Glu) iontophoretic
current magnitudes on electromotor neuron (EMN) intervals in the dorsal
posterior (DP), precommand (PCN) and ventroposterior nuclei (VP). (A) One
example from each nucleus in a single fish. EMN intervals are plotted against
time. The timing of L-Glu iontophoresis is indicated by the
horizontal bars beneath the plots, with the current magnitude increasing from
100 nA to 900 nA in steps of 200 nA. (B)
Doseresponse curves of the effects of varying current magnitude on
median EMN intervals. Values shown are means ±
S.E.M.