Whether it is cerebral atrophy or cerebellar atrophy, these are concepts in imaging. They are generally detected through cranial CT or MRI scans, resulting in such diagnoses in imaging reports. Generally, cerebral atrophy mainly refers to the atrophy of the cerebral cortex, which includes areas like the frontal lobe, temporal lobe, hippocampus, and parietal lobe. The cerebral cortex is closely related to cognitive functions, movement, sensation, and emotions of the limbs. Patients with cerebral atrophy typically show a decline in intelligence, slow reactions, and dysfunction of bladder and bowel control, etc. The cerebellum mainly coordinates the body's integrative movements and ensures the fluent execution of limb movements. Therefore, cerebellar atrophy primarily leads to symptoms of ataxia, like finger tremors and unsteady walking.