Diagnosis of causes of dementia, memory loss, or cognitive decline (such as Alzheimer's disease, Lewy body dementia, frontotemporal dementia, etc.), neurocognitive assessment, neurobiofeedback examination; diagnosis of cerebrovascular disorders (such as stroke, radiation-induced vasculopathy, etc.), carotid and intracranial artery ultrasound testing; diagnosis of peripheral neuropathies (such as neuropathic pain related to diabetes or cancer-related treatment, trigeminal neuralgia, etc.), etiological diagnosis of chronic pain (such as fibromyalgia), peripheral nerve electrophysiological testing, and autonomic nervous system function testing; diagnosis of headache etiology (migraine, tension-type headache, etc.), botulinum toxin injection therapy; epilepsy, electroencephalography; diagnosis and treatment of sleep disorders (restless leg syndrome, rapid eye movement sleep disorder, etc.); diagnosis and treatment of movement disorders (such as Parkinson's disease, atypical parkinsonism syndromes. cerebellar degeneration, or symptoms of tremor, rigidity, gait/speech/swallowing disturbance, poor balance, etc.), genetic screening for congenital or hereditary diseases; diagnosis and treatment of rare neurological disorders (such as Creutzfeldt-Jakob disease, Huntington's disease, spinocerebellar atrophy, multiple sclerosis, etc.).