In vivo voltage-dependent influences on summation of synaptic potentials in neurons of the lateral nucleus of the amygdala

► Neurons of the LAT display clusters of post-synaptic potential (PSPs) in vivo. ► The amplitude and area of clusters depend on the membrane potential. ► The relationship to membrane potential is sublinear. ► The sublinear relationship is sensitive to TEA, but not cesium. ► Reversal of sublinearity leads to increased PSP integration and AP firing.