Billy Joel Back on Stage; Alzheimer's and Sleep; Predicting Parkinson's Progression

Billy Joel has announced his first official performance since being diagnosed with normal pressure hydrocephalus, according to People. MedPage Today also highlights recent neuroscience findings, including research linking slow-wave sleep with cognitive changes in preclinical Alzheimer’s disease and factors associated with faster Parkinson’s progression. The roundup covers additional studies on neurological conditions and investigational treatments.