Correlates of perceptual awareness in human primary auditory cortex revealed by an informational masking experiment

► We investigate neural correlates of conscious auditory processing using MEG and fMRI. ► Perceptibility of sinus tones is reduced by a random multi-tone masker background. ► Activity in medial Heschl's gyrus is found for detected versus to not detected tones. ► Primary auditory-cortex seems important for conscious auditory perception.