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In the absence of ZD7288, a 1-s train of vagal stimulation at 50 Hz causes a PEMH. (A). Exposure to 1 microM ZD7288 causes no change in the stimulus/response pattern but markedly reduces the peak PEMH amplitude. Numbers at the beginning and end denote RMP and most negative membrane potential during PEMH, respectively. (B). Scale bars in (A) also apply to (B).
