Table 4.
Functional imaging results from independent two sample t‐tests for the sleep by age interaction (1‐2) and the effect of age (3‐4) and sleep (5‐6) for the session by group interaction effects in the young Nap (YN), young No‐Nap (YNN), older Nap (ON) and older No‐Nap (ONN) groups
| Hemisphere | Region | Subregion | cluster | X | Y | Z | z | P |
|---|---|---|---|---|---|---|---|---|
| Retest‐Training Session: Sleep × Age Interaction | ||||||||
| 1. Session × group interaction (YN‐YNN)‐(ON‐ONN) | ||||||||
| Left | Occipital | Middle | 415 | −46 | −72 | 34 | 3.87 | 0.000 |
| Right | Cingulate | Anterior | 51 | 8 | 28 | −6 | 3.86 | 0.000 |
| Left | Temporal | Superior | 64 | −46 | −16 | −4 | 3.86 | 0.000 |
| Left | Fusiform | 178 | −30 | −58 | −4 | 3.81 | 0.000 | |
| Left | Hippocampus | 42 | −32 | −26 | −8 | 3.71 | 0.000 | |
| Right | Fusiform | 63 | 32 | −44 | −6 | 3.62 | 0.000 | |
| Right | Fusiform | 36 | 38 | −64 | −18 | 3.54 | 0.000 | |
| Left | Cingulate | Posterior | 7 | −6 | −38 | 14 | 3.48 | 0.000 |
| Left | Parahippocampal | 4 | −24 | 2 | −24 | 3.48 | 0.000 | |
| Left | Frontal | Middle | 50 | −36 | 28 | 48 | 3.42 | 0.000 |
| Right | Occipital | Superior | 48 | 20 | −94 | 24 | 3.41 | 0.000 |
| Right | Hippocampus | 5 | 30 | −24 | −8 | 3.38 | 0.000 | |
| Left | Temporal | Middle | 8 | −46 | −50 | −4 | 3.33 | 0.000 |
| Right | Parietal | Cuneus | 33 | 12 | −80 | 32 | 3.30 | 0.000 |
| Right | Frontal | Medial Prefrontal | 8 | 6 | 46 | −14 | 3.24 | 0.001 |
| Left | Temporal | Middle | 9 | −50 | −4 | −18 | 3.22 | 0.001 |
| Left | Frontal | Inferior | 4 | −24 | 30 | −10 | 3.20 | 0.001 |
| Left | Occipital | Middle | 3 | −36 | −66 | 24 | 3.16 | 0.001 |
| Left | Temporal | Superior | 3 | −54 | −4 | 0 | 3.15 | 0.001 |
| Left | Cerebellum | V | 4 | −2 | −60 | −20 | 3.13 | 0.001 |
| Left | Occipital | Middle | 1 | −34 | −86 | 20 | 3.12 | 0.001 |
| Left | Frontal | Superior Medial | 1 | −10 | 40 | 30 | 3.10 | 0.001 |
| Right | Occipital | Superior | 1 | 22 | −84 | 22 | 3.10 | 0.001 |
| 2. Session × group interaction (ON‐ONN)‐(YN‐YNN) | No significant voxels | |||||||
| Retest‐Training Session: Effect of Age | ||||||||
| 3. Session × group interaction (YN‐ON) | ||||||||
| Left | Occipital | Middle | 136 | −44 | −74 | 36 | 3.78 | 0.000 |
| Right | Occipital | Superior | 82 | 20 | −96 | 26 | 3.67 | 0.000 |
| Left | Occipital | Middle | 41 | −32 | −90 | 18 | 3.61 | 0.000 |
| Left | Occipital | Middle | 4 | −20 | −90 | 40 | 3.23 | 0.001 |
| Left | Parietal | Angular | 2 | −54 | −66 | 32 | 3.15 | 0.001 |
| Right | Cingulate | Anterior | 1 | 6 | 30 | −6 | 3.10 | 0.001 |
| 4. Session × group interaction (ON‐YN) | No significant voxels | |||||||
| Retest‐Training Session: Effect of Sleep | ||||||||
| 5. Session × group interaction (YN‐YNN) | ||||||||
| Left | Parietal | Angular | 25 | −44 | −72 | 34 | 3.33 | 0.000 |
| Left | Hippocampus | 8 | −32 | −28 | −8 | 3.28 | 0.001 | |
| Left | Frontal | Medial Superior | 2 | −10 | 42 | 30 | 3.13 | 0.001 |
| 6. Session × group interaction (ON‐ONN) | No significant voxels | |||||||
Note: Statistics thresholded at p < 0.001 (unc.).