a Input/output relationship plots of hippocampal slices from 2 N and Ts2 mice treated with either vehicle or NFMD (n = 4 mice for Ts2 group and n = 5 mice for the other treatment groups), and graphed using GraphPad Prism8.0.1 [no significant difference between the slopes, Linear regression F (3, 40) = 0.107, p = 0.956]. b Plots of LTP in the Schaffer collateral synapses (CA3-CA1) induced by theta-burst stimulation (TBS) of mice from four treatment groups [Linear regression for, significant difference between the slopes of 2 N vs Ts2, F(1, 236) = 6.925, p = 0.0091; no significant difference between the slopes of Ts2 vs Ts2-NFMD, F(1, 236) = 2.103, p = 0.148]. c Averages of fEPSP slopes at 1, 50, and 110 min following tetanic stimulation; NFMD treatment increased the fEPSP slope of Ts2 mice by 18% at the 110 min time point [Ordinary One-Way ANOVA with Tukey correction, at 1 min time point, F(3, 34) = 20.75, R square = 0.647, for 2 N vs Ts2, p < 0.0001, 95% CI = 54.62, 139.5; at 50 min time point, F(3, 34) = 16.44, R square = 0.592, for 2 N vs Ts2, p < 0.0001, 95% CI = 49.54, 144.5; at 110 min time point, F(3, 34) = 19.00, R square = 0.626, for 2 N vs Ts2, p < 0.0001, 95% CI = 72.09, 139.6, for Ts2 vs Ts2-NFMD, p = 0.0334, 95% CI = −67.71, −2.938]. d Novel Object Recognition (NOR) test at 24 h after familiarization session, represented by recognition index in 2 N (n = 8) and Ts2 (n = 8) mice before (Pre) and after (Post) 4 weeks of NFMD treatments [Ordinary One-Way ANOVA with Tukey correction, F(3, 24) = 1.967, R square = 0.197, for Ts2-pre vs Ts2-post, p = 0.0262, 95% CI = 2.406, 34.97]. e Open field test results including speed, distance and percentage of time spent in thigmotaxis for 2 N (n = 8) and Ts2 mice (n = 8) Pre and Post 4 weeks of NFMD treatment [Ordinary One-Way ANOVA with Tukey correction, For Speed F(3, 22) = 5.936, R square = 0.447, for 2N-NFMD-pre vs Ts2-NFMD-pre, p = 0.0148, 95% CI = −36.97, −4.47; for Ts2-NFMD-pre vs Ts2-NFMD-post p = 0.0148, 95% CI = 3.572, 34.89; For Distance F(3, 22) = 9.784, R square = 0.572, for 2N-NFMD-pre vs Ts2-NFMD-pre, p = 0.0434, 95% CI = −27.75, −0.295; for Ts2-NFMD-pre vs Ts2-NFMD-post p = 0.0003, 95% CI = 9.205, 32.77). Data are presented as mean values ± SEM. Statistical significance represented by asterisks *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001. Source data are provided as a Source Data File.