Table I.
Postscanning rating of task performance during the fMRI experiment
| Main effect of body part | Main effect of object use | |||||
|---|---|---|---|---|---|---|
| Mean: limb ± SD | Mean: bucco ± SD | P value | Mean: without ± SD | Mean: with ± SD | P value | |
| Recognition | 4.58 ± 0.82 | 3.80 ± 0.62 | 0.000* | 4.09 ± 0.49 | 4,30 ± 0.46 | 0.074 |
| Separation between tasks | 4.07 ± 0.24 | 3.69 ± 0.35 | 0.004* | 3.80 ± 0.36 | 3.96 ± 0.38 | 0.030 |
| Imagery: kinesthetic/visual | 4.32 ± 0.32 | 3.85 ± 0.47 | 0.007* | 4.05 ± 0.35 | 4.11 ± 0.39 | 0.955 |
| Imagery: kinesthetic | 4.36 ± 0.34 | 3.86 ± 0.51 | 0.030 | 4.07 ± 0.36 | 4.12 ± 0.35 | 0.798 |
| Imagery: visual | 4.17 ± 0.36 | 3.84 ± 0.48 | 0.008* | 3.91 ± 0.38 | 4.11 ± 0.46 | 0.113 |
*
Significant at P < 0.05, corrected for multiple comparisons, corrected α = 0.01.
The subjects' (n = 14) mean ratings (±SD) of their performance during the fMRI measurement. Subjects rated their performance on a rating scale ranging from 1 to 5: 1 = not at all, 2 = not good, 3 = medium, 4 = good, 5 = very good. Ratings of performance on limb (relative to face) movements were significantly higher for the items recognition, separation between tasks, combined kinesthetic and visual imagery, and visual imagery only. There were no statistically significant differences between the subjects' ratings of movements with and without object. See Results for statistical parameters.