Figure 6

Depression of presynaptic excitation by CAP. A) Pseudo-color image sequence of stimulation-induced presynaptic excitation measured from a slice in the control solution (left) and with CAP (right) at 27°C. Superimposed time traces at the black square in the schematic drawing, as well as spatial distributions along the dorso-ventral lines a, b and c, are illustrated at bottom. B) No effect of CAP in a Ca++-free condition.