PANAS PA-NA scores as a function of movies and nights.

<p>Percentages of variation relative to the Ref night (Δ_Ref; means and standard errors of means). Ref, Exp and Rec: Reference, Experimental and Recovery nights. Negative, Neutral and Positive: valences of the movies used for emotional induction. Note the valence effect observed for the Exp night and recovering for the Rec night (red and green curves).