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. 2015 Oct 1;38(10):1607–1617. doi: 10.5665/sleep.5058

Figure 3.

Figure 3

Changes in N2P2 amplitude. (A) Average N2P2 amplitude by sleep condition and electrode. There was no difference in amplitude after 2 nights of habitual sleep versus after 2 nights with 50 % sleep restriction at any of the recording electrodes (Cz, Cc; P > 0.69). (B) N2P2 amplitude did not change with stimulus intensity (P = 0.48, main effect) and there was no sleep × intensity interaction (P = 0.66). (C) N2P2 amplitude habituated across stimulus blocks (P < 0.001, main effect), but the degree of habituation was not different between sleep conditions (P = 0.63, sleep × block interaction). Values are mean ± standard error of the mean. HS, habitual sleep; SR, sleep restriction.