Extended Data Fig. 3: Memory-related power changes are not due to changes in spectra characteristics.

A) Power spectra slope across the entire session for both remembered (dark shade) and forgotten (light shade) trials in both hippocampus (purple) and amygdala (orange) for all participants (n=147). Asterisk denote significant difference (t(3397)= 4.4, p= 1.1 x 10⁻⁵, Cohen’s d= 0.14, CI= [0.03, 0.09], two-sided t-test). Error bars denote standard deviation. B) Peak frequency across the entire session for both remembered and forgotten trials in both hippocampus and amygdala for all participants (n=147). Asterisk denote significant difference (t(3262)= -7.6, p= 4.3 x 10⁻¹⁴, Cohen’s d= -0.24, CI= [-2.2, 1.3], two-sided t-test). Error bars denote standard deviation. C) Peak height across the entire session for both remembered and forgotten trials in both hippocampus and amygdala for all participants (n=147). Asterisk denote significant difference (t(3030)= 4.6, p= 4 x 10⁻⁶, d= 0.15, CI= [0.01, 0.03], two-sided t-test). Error bars denote standard deviation. Related to Fig. 2.