Table III.
Behavioral task performance during fMRI
| Controls (n = 18) | preHDfar (n = 9) | preHDnear (n = 9) | Controls versus preHDfar | Controls versus preHDnear | preHDfar versus preHDfnear | ||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ||||
| RT IA condition (ms) | 277.2 | 37.9 | 261.1 | 27.0 | 289.5 | 42.7 | P = 0.1 | P = 0.5 | P = 0.1 |
| RT PA condition (ms) | 236.8 | 34.4 | 226.3 | 27.6 | 246.7 | 34.8 | P = 0.2 | P = 0.5 | P = 0.2 |
| RT difference PA > IA (ms) | −40.4 | 29.2 | −34.9 | 23.8 | −42.9 | 25.6 | P = 0.5 | P = 0.8 | P = 0.5 |
| Number of omitted trials (IA) | 1.0 | 2.1 | 1.7 | 3.2 | 1.4 | 3.6 | P = 0.9 | P = 0.7 | P = 0.9 |
| Number of omitted trials (PA) | 0.6 | 0.6 | 3.8 | 7.1 | 0.6 | 0.7 | P = 0.2 | P = 1.0 | P = 0.2 |
Shown is the number of omitted stimuli (group means and standard deviations) during the IA/PA conditions and reaction times (RT, group means, and standard deviations) for the IA/PA conditions as well as RT differences between PA and IA.