The âline of actual controlâ between China and India in Arunachal Pradesh, which the Chinese refer to as South Tibet, is not as tense as the one in Kashmir. Talks between the two countries aimed at resolving the border issue have been going on for ten years and 15 rounds.
An excitatory postsynaptic potential, a type of graded potential, occurs because of the influx of Na+ through chemically gated channels in the receptive region, or postsynaptiâ¦c membrane, of a neuron.
The opening of Na+ channels is triggered by the reduction of the membrane potential (depolarization) to the threshold of excitation. Once the ion channels open, the action potential begins as electrostatic pressure and the force of diffusion drive Na+ into the cell.