Table 1.
Tract microstructure and episodic memory.
| FCSRT Free Recall | FCSRT Free Recall | Visual Recognition Memory | Visual Recognition Memory | |||||
|---|---|---|---|---|---|---|---|---|
| (sex, education) | (sex, education, and age) | (sex, education) | (sex, education, and age) | |||||
| Fornix FA | 0.493∗ | 0.173 | 0.506∗ | 0.522∗ | ||||
| Fornix MD | -0.477∗ | 0.107 | -0.424∗ | -0.388 | ||||
| Fornix f | 0.363∗ | -0.065 | 0.172 | -0.078 | ||||
| Left | Right | Left | Right | Left | Right | Left | Right | |
| PHC FA | 0.439* | 0.361 | 0.125 | 0.089 | 0.353 | 0.288 | 0.221 | 0.169 |
| PHC MD | -0.641** | -0.251 | -0.372* | 0.087 | -0.408* | -0.392* | -0.317 | -0.293 |
| PHC f | 0.468* | 0.349 | 0.184 | 0.087 | 0.242 | 0.392* | 0.075 | 0.305 |
| Uncinate FA | 0.028 | 0.096 | -0.045 | -0.007 | -0.303 | 0.104 | -0.352 | 0.029 |
| Uncinate MD | -0.322 | -0.287 | 0.015 | 0.042 | -0.080 | -0.132 | 0.144 | 0.057 |
| Uncinate f | 0.097 | -0.047 | -0.115 | -0.070 | -0.174 | 0.057 | -0.303 | 0.038 |
Standardized β coefficients for fractional anisotropy (FA), mean diffusivity (MD) and tissue volume fraction (f) of the three temporal tracts regressed against performance in tests of episodic memory (dependent variable). All regression models included sex and education as covariates. Regression was repeated with age as a covariate. Covariates are shown in parentheses in the column headings. FCSRT, Free and Cued Selective Reminding Test; PHC, parahippocampal cingulum. ∗p < 0.05; ∗∗p < 0.005 (uncorrected for multiple comparisons).