Extended Data Fig. 1: Behavioural results in a pilot study validate the higher exploration in loss.
From: Rate and noise in human amygdala drive increased exploration in aversive learning
(a) Proportion of correct choices from four single participants in the pilot behavioural study (healthy participants, n = 46), in gain trials (blue) and loss trials (orange). Single trial-by-trial correct and incorrect choices are shown as dots in the top and bottom, respectively. (b) Proportion of correct choices for participants in the pilot study for gain trials (blue) and loss trials (orange). Shown for all participants (left, n = 46) and for participants exhibiting significant learning (right, n = 38). There was a significant performance increase between early and late trials of the gain and of the loss condition (middle inset, sign rank test comparing the first and last 20 trial in gain: Z = −2.85, p < 0.004; in loss: Z = −4.06, p < 10−4). Individual participant values are shown as grey lines. (c) Proportion of exploration choices as a function of trial (see main text and Fig. 2a for criterion) for all participants (left) and for participants exhibiting significant learning (right). Participants explored significantly more in the loss condition (middle inset, sign rank test on the proportion of exploration, n = 46, Z = −5.8, p < 10−8). Individual participant values are shown as grey lines.
