A long-term extension study reported in npj Parkinson’s Disease explores home-based deep sleep modulation in people with Parkinson’s disease, extending feasibility and assessing sustained effects over time. The work, led by Horlacher, Moser, Schreiner and colleagues, evaluates whether the home intervention can maintain outcomes beyond initial setup. Home-based approaches are notable because they shift intervention logistics away from clinic settings, potentially improving adherence while reducing burden for caregivers and healthcare systems. For Parkinson’s researchers, deep sleep phenotypes also tie into symptomatic management and possible downstream neurobiology, even though the trial focus remains on clinical feasibility. The study adds to a growing set of non-pharmacologic strategies being tested with longer follow-up windows.