Article Correctness Is Author's Responsibility: Gene That Helps Us Know When It’s Time to Urinate Discovered October 19, 2020 Author: Neuroscience News Category: brain researchThe article below may contain offensive and/or incorrect content. Study implicates the PIEZO2 gene in experiencing the urge to urinate. The gene helps at least two cell types in the brain to identify when the bladder is full and needs emptying.