The Journal of Neuroscience, December 13, 2006, ():
Discrimination Training Alters Object Representations in Human Extrastriate Cortex
J. Neurosci. Op de Beeck et al.
26: 13025
Supplemental Data
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Figure S1. Comparison between direct functional alignment and indirect anatomical alignment in terms of the between-session replicability of face selectivity in the right fusiform gyrus: a, replicability for direct functional alignment; b, replicability for indirect anatomical alignment. Data are shown for different sets of runs: Post-training selection runs (the post-training runs used to select the voxels), post-training test runs (the other runs in the post-training scan session), and pre-training runs (all runs in the first scan session). The error bars show the sem across subjects of the difference in the response between faces and objects. See supplemental material SM1 for more information.
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Figure S2. Object-selective activations before and after training. Activations (significance maps thresholded at p < 0.0001, uncorrected) are shown for the contrast objects > scrambled, with red/yellow indicating positive contrast and blue indicating negative contrast. a, Functional activation overlaid on a coronal anatomical slice for three subjects. Slices are shown with right hemisphere at the left. b, Functional activation overlaid on a ventrolateral view of the inflated brain of a fourth subject. These subjects and slices correspond to the subjects and slices in Figure 4.
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Figure S3. Percent signal change in trained voxels (A-B) and control voxels (C).
Trained voxels showed a significant post-training preference for trained objects, control voxels preferred one untrained object class above the other. a, Response of the trained voxels to trained and untrained objects. The identical panel is shown in the main manuscript (Figure 6), but is repeated here to facilitate a direct comparison with panel c. Data are shown for different sets of runs: Post-training selection runs (the post-training runs used to select the voxels), post-training test runs (the other runs in the post-training scan session), and pre-training runs (all runs in the first scan session). The error bars show the sem across subjects of the difference in the response between trained and untrained objects. b, Response of the trained voxels to faces, objects, and scrambled images. Data are shown separately for session 2 and session 1 localizer runs. The error bars show the sem of the difference in the response between objects and scrambled images. c, Response of control voxels to their preferred and unpreferred untrained objects. Same conventions as in panel a. See supplemental material SM4 for more information.
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Figure S4. Scatter plots of the relation between behavioral improvements during training and the training index in three ROIs.
