A population model of decision making.

Neurons in the first cluster project to the neurons in the second cluster with synaptic weight w1(t), while neurons in the second cluster project to neurons in the first cluster with synaptic weight w2(t). Neurons receive external inputs I1(t) and I2(t), respectively. As this is a rate model, I1(t), I2(t) have a unit of [1/s]. In addition, both neuronal populations receive self inhibition with delays (dashed arrows with flat heads), τ1 and τ2 respectively. The dynamics of this system is described by Eq 2.