In Experiment I, electrode recordings were made from three positions in the nervous system of Gryllus: the cercal nerves, the abdominal connectives, and the prothoracic-brain connectives.  The results indicated that the amplitude of the summated on-response at the cercal nerve (Electrode Position 1) decreased markedly as the rate of rise of the stimulus decreased.  Conversely, the on-response amplitude was enhanced as the stimulus intensity was increased.  The mean response latencies at Electrode Position 1 were found to vary predictably with the rise-time of the stimulus.  The mean response latencies of the neural elements in the abdominal connectives (Electrode Position 2) were also found to vary in a mathematically predictable fashion as the rise-time was varied.  The analysis of the frequency distribution of neural events at Electrode Position 2 revealed higher frequencies of discharge near the onset of the stimulus for the faster rising stimuli and staggered neural responses for the slower rising sounds.