Figure 4. Time course of the depression of evoked quantal release by the Miller Fisher syndrome (MFS) immunoglobulin G (IgG) (Patient 1) obtained during the active stage of the disease and of the same patient after recovery from disease. Quantal content (logarithmic ordinate scale) versus time in minutes (abscissa). Each point of the curve was determined from the results of at least 256 stimuli; quantal content m was calculated using the Poisson formula. The arrows denote the instant of solution change in the electrode. Note that recovery serum did not block transmission.