Washington: The brain can shut our old habits when required, says a new study from the Massachusetts Institute of Technology (MIT).A small region of the brain`s prefrontal cortex, where most thought and planning occurs, is responsible for control of which habits are switched on at a given time, the journal Proceedings of the National Academy of Sciences reported."We`ve always thought -- and I still do -- that the value of a habit is you don`t have to think about it. It frees up your brain to do other things," said Ann Graybiel, professor member of the McGovern Institute for Brain Research at MIT."However, it doesn`t free up all of it. There`s some piece of your cortex that`s still devoted to that control," said Graybiel.
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