Fig. 3.

Circuit diagram for the Hodgkin-Huxley (HH)-type model for the MSO with 5 explicit channels in addition to the synaptic channels: a leak channel, a sodium channel (Na), a low-threshold potassium channel (KLT), a high-threshold potassium channel (KHT), and an h current (I_h) channel. The two synaptic channels, G_exci and G_inhi, represent excitatory and inhibitory synaptic inputs. The diagram for the HH-type LSO model is similar to the MSO model except that the LSO model contains no KLT channel and no I_h channel. The membrane parameters for the MSO and LSO models are summarized in Table 1. C_m, membrane capacitance; V_m, membrane potential.