Johns Hopkins Medicine Nov 25 2025 Researchers at Johns Hopkins Medicine say they have used a "zap-and-freeze" technology to watch hard-to-see brain cell communications in living brain tissue from mice and humans. Findings from the new experiments, supported by the National Institutes of Health and published Nov. 24 in Neuron , could potentially help scientists find the root causes of nonheritable forms of Parkinson's disease, the researchers say. Sporadic cases of Parkinson's disease account