Brain's "Brakes" Suppress Unwanted Thoughts

Brain's "Brakes" Suppress Unwanted Thoughts

Everyone has unwelcome thoughts from time to time. But such intrusions can signal serious psychiatric conditions—from “flashbacks” in post-traumatic stress disorder (PTSD) to obsessive negative thinking in depression to hallucinations in schizophrenia. “These are some of the most debilitating symptoms,” says neuroscientist Michael Anderson of the University of Cambridge. New research led by Anderson and neuroscientist Taylor Schmitz, now at McGill University, suggests these symptoms may all stem from a faulty brain mechanism responsible for blocking thoughts. Researchers studying this faculty usually focus on the prefrontal cortex (PFC), a control center that directs the activity of other brain regions. But...

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