ANN ARBOR — Levels of first-time marijuana use in college have increased sharply in the past three years to the highest levels recorded in the past three decades. In 2015, about one in five college students became a first-time marijuana user. (more…)
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An evolutionarily ancient and tiny part of the brain tracks expectations about nasty events, finds new UCL research funded by the Medical Research Council.
The study, published in Proceedings of the National Academy of Sciences, demonstrates for the first time that the human habenula, half the size of a pea, tracks predictions about negative events, like painful electric shocks, suggesting a role in learning from bad experiences. (more…)