Emotional memory consolidation during sleep is associated with slow oscillation–spindle coupling strength in young and older adults

Memory performance and change in reactivity and SO–spindle coupling. Green circles denote experiment 1 (negative), and black triangles denote experiment 2 (positive). (A) Correlation between coupling strength in N2 (central electrodes) and corrected recognition in younger adults. (B) Correlation between coupling strength in SWS (frontal electrodes) and corrected recognition in older adults. (C) Correlation between coupling strength in N2 (central electrodes) and change in valence in younger adults. (D) Correlation between coupling strength in SWS (frontal electrodes) and change in valence in older adults. (*) P < 0.0125.