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. Author manuscript; available in PMC: 2011 Mar 22.
Published in final edited form as: Nat Neurosci. 2009 Jul 20;12(8):1062–1068. doi: 10.1038/nn.2342

Figure 7.

Figure 7

COMT gene predicts directed exploration toward uncertain responses. a) RT swings (change in RT from the previous trial) in a single met/met subject in the CEV condition, and the corresponding model uncertainty-based Explore term (amplified to be on the same RT scale). See supplemental animation #2 for this subject's evolution of beta distributions in CEV. b) COMT gene-dose effect on the uncertainty-based exploration parameter ε. Gene-dose effects were also observed when comparing relative contributions of ε compared with c) a reverse-momentum parameter γ, and d) a lose-switch parameter κ. Relative Z-scores are plotted here due to comparison of parameters scaling quantities of different magnitudes. Error bars reflect standard error.