Figure 1From: Compromise revisited: inhibitory synapse and electrical coupling effects on bilateral phasing in the leech heartbeat systemLeech heartbeat circuit diagram showing identified heart interneurons (HN) of the CPG and their pattern of inhibitory synaptic connections (lines with circles) onto each other and the heart excitor motor neurons (HE). The resistor symbol indicates rectifying electrical coupling connecting two HE neurons in the same segment. Three parameters were varied in this study: the phase of the right HN synaptic input (Φ Syn ) and the maximum conductances of the inhibitory synapse (g Syn ) and electrical coupling (g coup ).Back to article page