Fig. 2: Manipulation of attentional intensity using differential reward outcomes.
From: Single trial neuronal activity dynamics of attentional intensity in monkey visual area V4
a Visual spatial attention task. Monkeys were required to fixate, attend to sample stimuli (Gabors) presented in both hemifields (inside and outside of recorded neurons’ receptive field (RF)), and report an orientation change that occurred in one of the two test intervals by making a saccade to the stimulus location. b Unsignaled change in reward size between large and small values over blocks of 120 trials. c Attention operating characteristic (AOC) curve, indicating behavioral sensitivity (d′, circles) and criterion (c, triangles) on individual sessions and their average (solid markers) for test stimuli inside and outside RF during two reward conditions, large and small (24 Total sessions: 9 monkey P; 15 monkey S). Dashed colored lines indicate average d′ in each hemifield. Lines connect two reward conditions within a session. Data are presented as mean with 95% confidence intervals. d Block-averaged pupil area during pre-stimulus fixation and sample stimulus periods. Pupil area was normalized to mean of pre-stimulus fixation during small-reward trial blocks. Data are presented as mean with 95% confidence intervals.
