NEW YORK and BERLIN, Sept. 14, 2021 (GLOBE NEWSWIRE) — Perception Neuroscience (Perception), an atai Life Sciences (atai) biopharmaceutical company focused on developing innovative therapies in neuropsychiatric diseases, today announced the initiation of a Phase 2a clinical study to evaluate the safety and efficacy of PCN-101 (R-ketamine). R-ketamine is a stereoisomer of ketamine being developed…