The primary motor cortex and premotor cortex initiate motor movement. Both gyri are located in the frontal lobe and are separated by the central sulcus from the somatosensory cortex in the parietal lobe. The somatosensory cortex is responsible for processing sensory information that reaches this cortical area via the spinothalamic tracts. The insula is part of the limbic system and consists of five gyri.

• Primary Motor Cortex (pink): Roll thin, long rolls of pink clay. Place a roll of pink clay in the frontal lobe, at the level of the cingulate gyrus, ‘curving’ from medial to lateral over the corona radiata (white). Repeat this step on the other side.
• Primary Somatosensory Cortex (pink): Roll thin, long rolls of pink clay. Place a roll caudal to the primary motor cortex, ‘curving’ from medial to lateral over the corona radiata (white). Repeat this step on the other side.
• Premotor Cortex (pink): Roll thin, long rolls of pink clay. Place a roll in front of the primary motor cortex, ‘curving’ from medial to lateral over the corona radiata (white). Repeat this step on the other side.
• Insula (pink): Roll thin, long rolls of pink clay and ‘curve’ them into two long and three short bends. Place the insula laterally to both lentiform nuclei.