Figure 4 | Scientific Reports

Figure 4

From: First-night effect reduces the beneficial effects of sleep on visual plasticity and modifies the underlying neurochemical processes

Figure 4

Mediation analysis for experiment 2. The effect of the independent variable day (blue) on the dependent variable (cyan, the E/I ratio or GABA) may be mediated by a mediating variable shown in the red box, including SOL (A, C), arousal index (B, D), occipital sigma activity (E) or occipital delta activity (F). Path c (solid line) represents the total effect of the independent variable on the dependent variable, whereas path c’ (dotted line) represents the direct effect of the independent variable on the dependent variable after accounting for any mediation effect. However, none of the mediating effects reached significance. The contribution of the mediating variable was calculated using the formula (|a × b|)/(|a x b + c’|).

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