Final answer:
The cortical regions in the cerebral cortex are activated when thinking about a stimulus that is no longer present.
Step-by-step explanation:
The cortical regions in your cerebral cortex are activated when you are thinking about a stimulus that is no longer present. The cerebral cortex is responsible for sensory perception and has several areas that process information from different senses, such as the somatosensory, visual, auditory, and gustatory senses. These areas allow us to consciously perceive and interpret sensory stimuli.