Human brain anatomy Computer artwork of a persons head showing the brain with the right hemisphere removed The following regions can be seen outer cortex red somatosensory cortex lighter upper left temporal lobe dark pink centre occipital lobe pink left medulla oblongata orange bottom left cerebellum brown lower left pons light beige lower centre hippocampus blue centre left midbrain purple centre thalamus yellow centre corpus callosum green upper centre hypothalamus blue centre optic nerves pink centre right and the pituitary gland orange centre