The study is said to be the first to provide evidence of the direct impact of serotonin, a feel-good hormone, on the development of the prefrontal cortex, a key part of the brain.
Kevin Lamarque/ReutersAuthorities have sent part of the brain of Robert Card, the former Army reservist who died of a self-inflicted gunshot wound in October after carrying out a devastating shooting spree in Lewiston, Maine, to a lab in the hopes that it will shine a light on how his mental state rapidly unwound. Specifically, authorities are investigating whether Card’s repeated exposure to explosions as an Army grenade instructor may have caused an unseen traumatic injury and contributed to h