Slow wave(慢波电位)/ Basic electrical rhythm(BER,基本电节律) The spontaneous rhythmic, subthreshold depolarizations of the cell membrane(slow wave)of the gastrointestinal tract Initiated in the interstitial cells of Cajal (ICC) (pace maker cell Slow wave (慢波电位) / Basic electrical rhythm (BER, 基本电节律) ◼ The spontaneous rhythmic, subthreshold depolarizations of the cell membrane (slow wave) of the gastrointestinal tract ◼ Initiated in the interstitial cells of Cajal (ICC) (pace maker cell)