Ca-permeable AMPA receptor-dependent silencing of neurons by KCa3.1 channels during epileptiform activity.

Ca-activated KCa3.1 channels are known to contribute to slow afterhyperpolarization in pyramidal neurons of several brain areas, while Ca-permeable AMPA receptors (CP-AMPARs) may provide a subthreshold source of Ca elevation in the cytoplasm. The functionality of these two types of channels has also been shown to be altered by epileptic disorders.