“…These toxins have been used to probe the function and biochemical composition of K channels in the central nervous system (Parcej & Dolly, 1989;Rehm & Lazdunski, 1988;Benishin et al, 1988). Toxin administration prevents repolarization of presynaptic terminals and leads to uncontrolled neurotransmitter release and seizure activity (Anderson, 1985;Bagust et al, 1997;Black et al, 1986;Collier et al, 1981;Halliwell et al, 1986;Harvey & Gage, 1981;Harvey & Anderson, 1985;Silveira et al, 1988a,b;Velluti et al, 1987).…”