Figure A1.

Block-by-block performance accuracy during training for the seven trained subjects. Each panel shows data obtained from one individual subject. Each open circle represents performance accuracy and is derived from one training block (55 trials). The solid dots represent the performance accuracy of the middle letter recognition in the pre- and post-tests. The data for different days (16 blocks per day) were plotted in different colors. Vertical dashed lines indicate the boundaries between days. The green horizontal lines represent the 80% accuracy criterion.