Figure 1.

Nonlinear dendritic interactions. A, Dendritic current I_ds as defined in Equation 8 for standard parameters. B, Somatic depolarization V of a postsynaptic neuron in response to presynaptic stimulation at time t = 0 (blue solid line) that is sufficiently strong such that a dendritic spike current is elicited (i.e., the total stimulation is larger than the dendritic threshold Θ_b). The black dashed line is the somatic response in the absence of dendritic nonlinearities (linear dendritic input summation).