Parietal (A) and thalamic (B) regions involved in the more complex auditory cognitive task while participants were illuminated in 7T MRI. On the right, reconstruction of the time course of the activity during the 25 min of the recording.(C) Location of different nuclei of the thalamus and area of the thalamus used for the analysis. It is this latter area that receives the light information and modifies the activity of the parietal region.