Table 2.
Location and magnitude of most significant functional and structural brain abnormalities in young adult PSEN1 E280A mutation carriers
Atlas Coordinates † | P-Value # * | ||||
X | Y | Z | |||
hippocampal/parahippocampal locations with significantly greater activation
during associative memory encoding/viewing of novel face-name pairs | |||||
hippocampus++ | Right | 33 | −8 | −19 | <0.0001 (0.001)* |
hippocampus++ | Left | −30 | −16 | −13 | 0.001 |
parahippocampal gyrus++ | Right | 33 | −33 | 3 | 0.001 (0.014)* |
precuneus/posterior cingulate locations with significantly less deactivation
during associative memory encoding/viewing of novel face-name pairs | |||||
precuneus++ | Right | 18 | −57 | 42 | 0.001 (0.008)* |
precuneus++ | Left | −12 | −66 | 54 | 0.002 (0.010)* |
posterior cingulate++ | Right | 21 | −50 | 17 | 0.002 (0.009)* |
locations with significantly less gray matter | |||||
parietal+ | Right | 55 | −18 | 38 | 0.0004 (0.009)* |
parietal++ | Left | −38 | −75 | 48 | 0.0005 |
temporal++ | Right | 51 | −27 | 5 | 0.001 |
fusiform gyrus++ | Right | 38 | −61 | −7 | 0.0008 |
fusiform gyrus++ | Left | −36 | −45 | −8 | 0.0008 |
parahippocampal gyrus++ | Right | 28 | −24 | −22 | 0.002 |
frontal | Right | 44 | 14 | 18 | 0.0006 |
occipital | Left | −26 | −61 | 21 | 0.002 |
cerebellum | Left | −6 | −55 | −11 | 0.002 |
Coordinates from Talairach’s brain atlas34, such that x is the distance in millimeters to the right (+) or left (−) of midline, y is the distance anterior (+) or posterior (−) to the anterior commissure, and z is the distance above (+) or below (−) a horizontal plane through the anterior and posterior commissures.
Located in an AD-affected search region.
P-values, uncorrected for multiple comparions.
Findings that remained significant after correcting for multiple regional in the postulated search regions are indicated by the corrected p-values shown in parentheses.