Final answer:
The cerebellum is the structure located under the cerebral hemispheres that is important in sensory experience, motor activity, stimulation of the cerebral cortex, and memory.
Step-by-step explanation:
The structure located under the cerebral hemispheres that is important in sensory experience, motor activity, stimulation of the cerebral cortex, and memory is the Cerebellum.
The cerebellum is responsible for coordinating balance, movement, and motor skills. It also plays a role in processing certain types of memories, particularly procedural memory.