Figure 2.

Training on a 2-AFC simultaneity judgment task narrows the temporal window of multisensory integration. a, Two sigmoid curves were fit to each individual's single-assessment data to derive an estimation of the temporal binding window (criterion, 75% of maximum). In this individual, the size of the window narrows from 321 to 115 ms after 5 h of feedback training. b, After training on the 2-AFC paradigm, a group of 22 participants showed significant decreases in their probability of judging nonsimultaneous audiovisual pairs as simultaneous. c, Average window sizes (total, left, and right) across the 5 d of training. Note that window size dropped significantly after the first hour of training, after which it remained stable. Error bars indicate 1 SEM, *p < 0.05.