Figure 1

Experimental paradigm. The beginning of every trial consisted of 30 s in which participants either listened to a harmonic musical stimulus (positive valence condition), a scrambled musical stimulus (negative valence condition) or no auditory stimulus was presented (neutral condition). Subsequently, instructions on button assignment were presented (i.e., which button should be pressed when a particular stimulus variant is perceived during the trial). Afterwards, two competing stimulus variants were presented to the different eyes through a stereoscope, creating binocular rivalry. Stimuli were shown for 90 s, during which participants were asked to report changes of their current percept via button press.