selle moodustavad pre- ja postsünaptilistes membraanides paiknevad aukliidused, mille kaudu saab ioonide voolul liikuda passiivselt läbi rakkudevaheliste pooride ühest neuronist teise; selle voolu allikaks on potentsiaalide vahe, mille tekitab lokaalselt aktsioonipotentsiaal, An electrical synapse is a mechanical and electrically conductive link between two neighboring neurons that is formed at a narrow gap between the pre- and postsynaptic neurons known as a gap junction. At gap junctions, such cells approach within about 3.5 nm of each other.