The left brain is rational, and other lies you've been told about neuroscience

Here now, for distributing far and wide, is a list of common misconceptions surrounding "Folk Neuroscience" — a term clinical and neuropsychologist Vaughan Bell uses to describe the imprecise, "sometimes wildly inaccurate," concepts that are commonly used to explain the brain. They're borrowed from the end of a fantastic feature, published in last Sunday's Observer, wherein Bell explores how inaccurate depictions of neuroscience have grown in tandem with a burgeoning public interest in the mind and its mechanisms.

If you read one article on neuroscience this month, let it be this one: "Our brains, and how they're not as simple as we think."

FOLK NEUROSCIENCE Popular misconceptions

  • The "left-brain" is rational, the "right-brain" is creative
    The hemispheres have different specialisations (the left usually has key language areas, for example) but there is no clear rational-creative split and you need both hemispheres to be successful at either. You can no more do right-brain thinking than you can do rear-brain thinking.
  • Dopamine is a pleasure chemical
    Dopamine has many functions in the brain, from supporting concentration to regulating the production of breast milk. Even in its most closely associated functioning it is usually considered to be involved in motivation (wanting) rather than the feeling of pleasure itself.
  • Low serotonin causes depression
    A concept almost entirely promoted by pharmaceutical companies in the 1980s and 90s to sell serotonin-enhancing drugs like Prozac. No consistent evidence for it.
  • Video games, TV violence, porn or any other social spectre of the moment "rewires the brain"
    Everything "rewires the brain" as the brain works by making and remaking connections. This is often used in a contradictory fashion to suggest that the brain is both particularly susceptible to change but once changed, can't change back.
  • We have no control over our brain but we can control our mind
    The mind and the brain are the same thing described in different ways and they make us who we are. Trying to suggest one causes the other is like saying wetness causes water.

[The Guardian]