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Fig. 3. Graded interruption of swimming by increasing hyperpolarization of
sint1. (A–D) The upper traces in A–D show activity in
Rsint1 during a continuous episode of swimming. The lower traces show
the animal's swimming movements. Hyperpolarizing currents were applied
via the recording electrode using a bridge circuit. The timing of
current pulses is indicated by solid bars drawn under the behavioral record,
and the strength of the hyperpolarizing current is indicated under each bar.
Changes in absolute membrane voltage during stimulation are inaccurate because
of errors in bridge balance.
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