Figure 3

Diagrammatic representation of prepulse inhibition. The top figure illustrates the pulse-alone trial in which startle is elicited by a loud noise burst presented for 20–40 msec. The bottom figure illustrates the prepulse + pulse trial in which startle is inhibited by a weak prepulse given shortly (in this case 100 msec) before the same startle-eliciting pulse used in the pulse-alone trial. (From ref. 42, with permission.)

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published 2000