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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Brain Cogn. 2011 Aug 26;77(2):248–256. doi: 10.1016/j.bandc.2011.08.003

Figure 3.

Figure 3

Summary of performance levels as a function of training sessions. a. Direction discrimination (the trained task). b. Speed discrimination (the untrained task). In both graphs, the abscissa indicates the number of direction discrimination training sessions, and the ordinate indicates subjects’ thresholds. In both tasks, lower thresholds indicate better performance. NC stands for normal control and SZ for schizophrenia. c. Improvement indices for the trained and untrained tasks. In all three graphs, error bars represent 1 standard error. For both tasks, performance improvement was calculated by dividing the difference between the threshold on Session 6 and Session 1 by the threshold for Session 1. Asterisk: p < 0.05; n.s.: non-significant.