Fig. 1.

Stimuli and experimental paradigm. (A) The 3 objects used in the experiment. (B) An example of how the two auditory tones could be paired with the three objects. This results in two items that serve as targets (T) for one cue, and non-targets (Ni) for the other cue, and the third item serving as a consistent non-target (Nc). The pairings between the tones and the objects were counterbalanced across participants. (C) An example trial illustrating the experimental paradigm. At the beginning of each trial, an auditory cue indicated the target for that trial. After a delay, this was followed by three visual displays. Participants were asked to make an immediate button press if a brightening of the target stimulus was detected.