Zoning out: the brain’s science fictional mode

Paul Raven @ 14-07-2009

pensive statueHere’s some good news for those of you who, like myself, are prone to losing mental focus; apparently “zoning out” is an important mental state, as well as being intrinsically linked to the way we think about the future.

The regions of the brain that become active during mind wandering belong to two important networks. One is known as the executive control system. Located mainly in the front of the brain, these regions exert a top-down influence on our conscious and unconscious thought, directing the brain’s activity toward important goals. The other regions belong to another network called the default network. In 2001 a group led by neuroscientist Marcus Raichle at Washington University discovered that this network was more active when people were simply sitting idly in a brain scanner than when they were asked to perform a particular task. The default network also becomes active during certain kinds of self-referential thinking, such as reflecting on personal experiences or picturing yourself in the future.

The fact that both of these important brain networks become active together suggests that mind wandering is not useless mental static. Instead, Schooler proposes, mind wandering allows us to work through some important thinking. Our brains process information to reach goals, but some of those goals are immediate while others are distant. Somehow we have evolved a way to switch between handling the here and now and contemplating long-term objectives. It may be no coincidence that most of the thoughts that people have during mind wandering have to do with the future.

Well, that’s a relief – I can stop castigating myself for getting distracted by stuff while I’m… oooh, look, a new entry on TVtropes.com! [image by Spojeni]


Forget to remember; remember to forget – daydreaming solves problems

Paul Raven @ 16-05-2009

Another data point to add to the collected studies of creativity and problem-solving: daydreaming activates the same parts of the brain that are used in solving complex quandries:

Until now, the brain’s “default network” – which is linked to easy, routine mental activity and includes the medial prefrontal cortex (PFC), the posterior cingulate cortex and the temporoparietal junction – was the only part of the brain thought to be active when our minds wander.

However, the study finds that the brain’s “executive network” – associated with high-level, complex problem-solving and including the lateral PFC and the dorsal anterior cingulate cortex – also becomes activated when we daydream.

Having spent a good half of my life hanging around with artists, writers and musicians – all of whom tend to mental drifting to a greater or lesser degree, especially when working – this doesn’t really seem like a surprising result, but it’s interesting to have scientific support for an observational theory. All I need now is more time to daydream with… [via BoingToTheBoing]