Fig 1.
The subject's right arm was held by a soft immobilization and he/she could see their right hand through a webcam the output of which was projected onto a screen behind them. A mirror placed before their eyes allowed vision of the screen. They held a custom made push-button with their left hands.
Fig 2.
Responses to the questionnaire that participants filled after the last training session (green) and after the fMRI session (blue) to assess ownership feeling over the video projected hand (question 1), the consistency of ownership feeling (question 2), and the vividness of the kinesthetic sensation (question 3).
Histograms are mean responses (+ standard deviation) reported by all participants on 100 mm analogue scales. It is important to note that the Other Hand video was specifically selected so it did not induce any feeling of ownership nor any sensation of movement (cf methods section).
Table 1.
Results are given for each significant cluster including the global peak (first line) and local peaks. p values are corrected for familywise errors
Table 2.
Results are given for each significant cluster including the global peak (first line) and local peaks. p values are corrected for familywise errors.
Table 3.
Results are given for each significant cluster including the global peak (first line) and local peaks. p values are corrected for familywise errors.
Table 4.
Results are given for each significant cluster including the global peak (first line) and local peaks.
Fig 3.
Voxel level threshold for both contrasts was set at 0.001 uncorrected and voxel level threshold was set at 0.05 FWE corrected. For visualization purpose, statistical maps are displayed on a single subject brain normalized onto the MNI template. Anatomical locations estimated using the Anatomy toolbox (Eickhoff et al. 2006; Eickhoff et al. 2007; Eickhoff et al. 2005) and the Anatomical Automatic Labeling (Tzourio-Mazoyer et al. 2002) are given in Table 3.
Fig 4.
Statistical parametric maps for Self Hand > Other Hand and for Real movement > Baseline.
Light blue = Self Hand > Other Hand; yellow = Real movement > Baseline; green = areas common to both contrasts. Voxel level threshold for both contrasts was set at 0.001 uncorrected and cluster level threshold was set at 0.05 FWE corrected. For visualization purpose, statistical maps are displayed on a single subject brain normalized onto the MNI template. Anatomical locations estimated using the Anatomy toolbox (Eickhoff et al. 2006; Eickhoff et al. 2007; Eickhoff et al. 2005) and the Anatomical Automatic Labeling (Tzourio-Mazoyer et al. 2002) are given in Tables 3 and 4.
Table 5.
Percent signal change in M1, PMd and SMA during the Self Hand and the Other Hand conditions.
Values are mean ± standard deviation.
Fig 5.
Percent Signal Change during the Self Hand and the Other Hand conditions for 3 motor Regions of Interest (ROIs).
ROIs were defined for each subject from their individual Real movement > Baseline contrast. For visualization purpose the statistical parametric map for the group analysis of the Real movement > Baseline contrast is projected onto a single subject brain normalized onto the MNI template.