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. Author manuscript; available in PMC: 2012 Sep 19.
Published in final edited form as: Nat Protoc. 2012 Feb 23;7(3):527–532. doi: 10.1038/nprot.2012.001

Figure 4.

Figure 4

Mean EMG magnitude during the cue and in the absence of the cue in the no shock, predictable and unpredictable conditions. Fear-potentiated startle is the difference score between startle magnitude during the cue, minus startle magnitude in the absence of the cue in the predictable condition. Anxiety-potentiated startle is the difference score between startle magnitude in the absence of the cue in the unpredictable condition minus startle magnitude in the absence of the cue in the no shock condition. Fear- and anxiety-potentiated startle are operational definitions of fear and anxiety, respectively. The error bars represent s.e.m.