Action potentials are typically initiated at the axon initial segment rather than dendrites because voltage-gated sodium channels are densely clustered at the AIS and sparse in the somatodendritic compartment.
The retrieved literature consistently supports the fundamental neurophysiological principle that action potentials are initiated at the axon initial segment (AIS) due to a high density of voltage-gated sodium channels, whereas dendrites generally lack this high density and specialized clustering. Papers [0], [4], [5], [6], [9], and [10] all underscore the AIS as the specific site of voltage-gated sodium channel concentration and action potential generation. None of the papers refute this claim.