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. 2015 Aug 17;5:13253. doi: 10.1038/srep13253

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(a) Evolution of the correct selection rate for two different problems. Making an accurate decision with a reward probability of P_L = 0.6 and P_R = 0.4 is more difficult when compared with P_L = 0.8 and P_R = 0.2 because the difference in the probability is less. However, autonomous decision making is still achieved. (b) Evolution of the associated PA values.