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Fig. 13. Synaptic output from sint2 to motoneurons. (A) Excitatory output
from sint2 to a synergistic motoneuron recorded in a quiescent
isolated brain preparation. Sint2 (lower trace) was driven to fire a
burst of action potentials by direct stimulation while recording membrane
voltage in the motoneuron (upper trace). Individual spikes in sint2
correspond with unitary epsps in the motoneuron. (B) Ipsps in an antagonistic
motoneuron coincident with action potentials in sint2 during fictive
swimming in an isolated brain preparation.