https://pennneuroknow.com/2026/04/07/what-was-i-doing-again-the-neuroscience-behind-losing-your-train-of-thought/PennNeuroKnowen2026-04-07T13:00:00+00:00“What was I doing again?” The neuroscience behind losing your train of thoughtforgetting, suppression, subthalamic nucleus, working memory, neural circuit, senior momenthttps://pennneuroknow.com/wp-content/uploads/2026/04/pnk_0407.png?w=150