Figure 4
From: Conscious processing of auditory regularities induces a pupil dilation
The pupil dilation global effect occurred only in participants aware of global regularity violations Using the same visual codes as in Fig. 3, a significant pupil dilation effect occurred in response to violation of global regularity, and not to violations of local regularity (artefact interpolation method; 2 upper panels). A subset of these 60 participants (N = 38) performed first a passive attentive version of the task during which they were not instructed about the structure of stimuli, and did not have to count global deviants, and were then submitted to a post-experimental regularity awareness score (RAS) to distinguish participants who consciously accessed to global regularity (RAS ≥ 5; N = 22) from those who did not (RAS < 5; N = 16). Finally they also performed an active counting version of the task. During the active counting task this subset of 38 participants showed the exact same pattern of results in the total group of 60 participants (two middle panels). In the passive attentive version of the task, only participants aware of global regularity showed a pupil dilation to global deviant stimuli.
