Extended Data Fig. 8: Linear and quadratic links with food likeability in the BVS.
From: Four core properties of the human brain valuation system demonstrated in intracranial signals
BVS: comparison between short and long versions of the task, and between squared rating and confidence judgment. a,b, Time courses of regression estimates obtained for linear (top) and squared (bottom) food likeability, locked on stimulus onset (left) or first button press (right), during the short (a) or long (b) version of the task. c, Time courses of regression estimates for squared first-order judgment (top) and confidence on these judgments (bottom), locked on stimulus onset (left) or first button press (right). First-order judgments mean age and likeability ratings pooled together. Solid lines indicate mean and dashed lines indicate SEM across recording sites. Stars indicate significant regression estimate (two-sided one-sample t-test, p<0.05, uncorrected) at each time point. Statistics: a. (post-stimulus: OFC: t(323)=4.43, p=1.10-5, (P)HC: t(255)=4.54, p=9.10-6; pre-response: OFC: t(323)=5.36, p=2.10-7, (P)HC: t(255)=6.43, p=6.10-10; two-sided one-sample t-tests). c. Regression against actual confidence judgments in OFC: squared first-order ratings, post-stimulus: t(125)=5.87, p=4.10-8; pre-response: t(125)=5.88, p=3.10-8; confidence ratings, post-stimulus: t(125)=5.05, p=1.10-6 ; pre-response: t(125)=3.57, p=5.10-4.
