Two types of synapses in the retina of the sea bass: chemical and electrical.
High resolution reversal potential measurements were performed in single identified DS motoneurones of the retina of the sea bass. In response to positive presynaptic current injections, control experiments demonstrated the presence of a voltage-dependent K+ conductance which was responsible for the hyperpolarisation of the presynaptic membrane and the inhibition of transmitter release. This conductance was similar t