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Module 10: Figure summation of excitatory inputs

Spatial and temporal summation of excitatory inputs is responsible for triggering action potentials.

This simple circuit contains two excitatory neurons (A and C) that each makes three separate synaptic contacts on the dendritic tree of neuron B. The insets on the right represent the voltage (V) recorded from neuron B following different types of spatial and temporal inputs, as described in the text.