Brain Areas Involved in Category-Specific Processing Participants were asked to silently name pictures of animals and tools while they were scanned with fMRI. The fMRIs revealed greater activity in the areas in white when participants named animals, and areas in black showed greater activity when participants named tools. Specific regions indicated by numbers include areas within the visual cortex (1, 2), parts of the temporal lobe (3, 4), and the motor cortex (5). Note that the images are left/right reversed.