Fig. 3: Replication of FIR with two stimuli in a different group of participants.

In a replication experiment, a different group of participants (n = 13) was tested using the experimental paradigm shown in Fig. 1a. a During exposure to author AM’s McGurk stimulus (auditory baba and visual gaga, expected fusion percept of dada) n = 6 participants frequently reported dada (fusion perceivers; one black circle per participant). The remaining participants (n = 7) perceived baba, the auditory component of the McGurk stimulus (auditory perceivers; gray circles). b Fusion perceivers of the AM McGurk stimulus showed a perceptual change for AM’s auditory-only baba from the pre-test to the post-test, with frequent reports of dada in the post-test. In contrast, auditory perceivers perceived baba veridically (few dada reports) in pre- and post-tests. c During exposure to female author AN’s McGurk stimulus consisting of auditory pa and visual ka, expected fusion percept of ta, n = 10 participants frequently reported the fusion percept while the remaining n = 3 participants did not. d For fusion perceivers of the AN McGurk stimulus, perception of the auditory component of the stimulus (auditory pa) changed from the pre-test to the post-test, with more frequent ta percepts. For auditory perceivers of the AN McGurk stimulus, perception was unchanged.