Table 11.
Within group regression results for middle aged adults
| Model | Predictor | Standardized β | T statistic |
|---|---|---|---|
| Spatial easy accuracy [F9,17 = 9.56, P < 0.001; adjusted R2 = 0.75] | |||
| Age | −0.25 | −2.02 | |
| LV1, left medial BA 18 (sum E + R) | +0.35 | 3.02* | |
| LV10, left lateral BA 18 (R) | −0.25 | −1.89 | |
| LV1, left BA 21 (E) | −0.30 | −2.48* | |
| LV1, left BA 38 (E) | +0.34 | 1.87 | |
| LV1, right BA 38 (E) | −0.39 | −2.03 | |
| LV1, left lateral BA 9 (sum E + R) | +0.70 | 4.59* | |
| LV1, left BA 10 (sum E + R) | −0.32 | −2.07* | |
| LV10, right BA 10 (R) | +0.49 | 3.52* | |
| Spatial hard accuracy [F6,18 = 4.60, P = 0.005; adjusted R2 = 0.47] | |||
| Age | −0.63 | −3.73* | |
| LV10, left lateral BA 18 (R) | −0.40 | −2.42* | |
| LV1, left BA 21 (E) | −0.40 | −2.46* | |
| LV1, left BA 38 (E) | +0.38 | 2.29* | |
| LV1, left BA 47 (E) | +0.35 | 2.05 | |
| LV1, left BA 10 (sum E + R) | +0.40 | 2.34* | |
| Temporal easy accuracy [F5,22 = 5.21, P = 0.003; adjusted R2 = 0.44] | |||
| Age | −0.45 | −2.78* | |
| LV1, right BA 19 (sum E + R) | −0.33 | −2.18* | |
| LV1, right PHC (E) | +0.48 | 2.76* | |
| LV1, left BA 47 (E) | −0.50 | −2.96* | |
| LV10, right BA 10 (R) | +0.35 | 2.29* | |
| Temporal hard accuracy [F7,17 = 11.18, P < 0.001; adjusted R2 = 0.75] | |||
| Age | −0.67 | −5.88* | |
| LV10, left lateral BA 18 (R) | −0.60 | −5.23* | |
| LV1, right BA 19 (sum E + R) | −0.25 | −2.23* | |
| LV1, left BA 38 (E) | +0.46 | 4.02* | |
| LV1, right BA 45 (sum E + R) | −0.24 | 1.98 | |
| LV1, right BA 9 (sum E + R) | +0.24 | 2.01 | |
| LV1, left medial BA 9 (R) | +0.44 | 3.72* | |
Note: This table presents the significant models resulting from a backward step-wise regression analysis to identify predictors of retrieval accuracy on spatial and temporal context memory tasks under easy (low-load) and hard (high-load) conditions across both age groups. LV, the significant latent variable from the PLS results from which the ROI was selected from. In parentheses beside each predictor, we identify whether the mean activity included for each ROI reflected task-specific encoding (E) activity, retrieval activity (R), or the sum of activity from encoding and retrieval (sum E + R). Refer to Tables 4–8 for specific coordinates, and details of each ROI.
BA, Brodmann area.
*Refers to t-values that were significant at P < 0.05.