TABLE 2.
Correlations among age, GABA+ measures and motor sequence learning magnitude
| Age | Base GABA+ | % ΔGABA+ | Learn Mag | |
|---|---|---|---|---|
| Age | – | – | – | – |
| Base GABA+ | −.32 (.056) | – | – | – |
| % ΔGABA+ | .45 (.006) | −.51 (.001) | – | – |
| Learn Mag | −.29 (.083) | .22 (.196) | −.41 (.013) | – |
Note: Pearson's correlation coefficients and corresponding uncorrected p values (parentheses) are shown for each pair of variables. Those in bold remained significant after correction for multiple comparisons using the FDR approach (adjusted critical p = .013). Correlations were conducted across the two experimental groups (n = 36), but see Tables S4 and S5 for within‐group correlations and group comparisons of the within‐group correlation coefficients, respectively.
Abbreviations: Base, baseline time point; FDR, false discovery rate; GABA, gamma‐aminobutyric acid; % ΔGABA+, percent change in GABA+ from the baseline to post‐learning/stimulation magnetic resonance spectroscopy time points; Learn Mag, magnitude of motor sequence learning in the initial training session.