Mean reaction times and error rates for each condition of the fMRI experiment.

Error bars represent confidence limits (95%). VA = visual and auditory read-out, VX = only visual read-out, AX = only auditory read-out, XX = control condition (no read-out). Reaction times show that visual search was not informed (restricted) in the XX condition, more restricted in the VX and the AX conditions, and most restricted in the VA condition.