Psychopharmocological research implicates cholinergic pathways in IT performance.
We have run a small scale fMRI study to begin the investigation of the functional anatomy of the inspection time procedure. Each stimulus was preceded by a cue and immediately followed by a backward mask. Subjects were only requested to discriminate mentally, without reporting their choices. Typically 25 slices were acquired per volume to cover the brain. During each block, visual stimulation was presented once every two seconds and the taller vertical bar appeared on either the left or the right in a random sequence.