Deep brain stimulation of the nucleus basalis of Meynert in neurodegenerative diseases with cognitive impairment: an update on evidence and mechanisms.

Summary: Right now, medicines for brain diseases like Alzheimer's and Parkinson's only treat the symptoms—they cannot stop the disease from getting worse. But doctors are testing a high-tech surgery called Deep Brain Stimulation (DBS). By sending tiny electrical pulses to a specific part of the brain called the Nucleus Basalis of Meynert (which controls memory and attention), doctors hope to improve thinking skills. Studies in animals and humans show it might work by boosting brain energy, increasing blood flow, and protecting brain cells. While it looks very promising, scientists need to do larger tests to make sure it is completely safe and works well for everyone.