Fig. 7: Higher behavioral impulsivity is associated with less relative activation of high probability outcomes.
From: Heuristics in risky decision-making relate to preferential representation of information
A Measuring theĀ relationship between Behavioral Impulsivity and Neural Probability Prioritization. To measure the between-participant relationship between behavioral impulsivity and neural probability prioritization, we regressed between participant neural probability prioritization \({{{{{{\rm{\beta }}}}}}}_{{{{{{\rm{prob}}}}}}({{{{{\rm{neural}}}}}})}^{{{{{{\rm{p}}}}}},{{{{{\rm{\tau }}}}}},{{{{{\rm{\tau }}}}}}{\prime} }\) onto Behavioral Impulsivity Scale (BIS) scores, separately for each train and test timepoint (Ļ and Ļ'). B, C Behavioral Impulsivity relates to Neural Probability Prioritization. B Image of t-statistic of relationship (for 18 participants) between Behavioral Impulsivity Scale (BIS) score and neural probability prioritization, \({{{{{{\rm{\beta }}}}}}}_{{{{{{\rm{prob}}}}}}({{{{{\rm{neural}}}}}})}\), computed for each train and test timepoint, smoothed with a Gaussian kernel (\({{{{{\rm{\sigma }}}}}}\)ā=ā1.5 time-bins). *: \({{{{{{\rm{P}}}}}}}_{{{{{{\rm{FWE}}}}}}}\)ā=ā.001, one-sided non-parametric permutation test on image minimum. C Histogram shows null distribution of minimum t-statistics over 5000 2-d maps, each generated by randomly shuffling BIS scores between participants. Dashed line shows true minimum t-statistic.
