AP Biology class blog for discussing current research in Biology

Sorry I’m So Lazy, Blame It On My Pre-Motor Cortex.

Scientists at the University of Oxford revealed in MRI scans of forty people that people of different levels of motivation show different brain responses to motion. Before people act, the pre-motor cortex activates prior to the parts of the brain which control movement. The brain’s of lazy people proved to light up more than the brains of industrious people.

Scientists believe that the brain connections between decisions and action are less effective in the lazy. Consequently, it requires more effort for this people to take actions. This leads scientists to believe that laziness is biology rather than concerning attitude.


Scientists at the University of Oxford caution that this finding most likely does not explain all conditions of laziness, but state that, by giving us more information about the brain processes underlying normal motivation, it helps us understand better how we might find a treatment for those pathological conditions of extreme apathy” (Robert Roy Britt, Laziness: Blame it on the Brain).

A previous study in 2012 suggests that laziness is related to the level and location of dopamine in the brain. “While high levels in some brain regions were associated with high work ethic, a spike in seemed to indicate just the opposite–a person more likely to slack off” (Jennifer Welsh, Slacker or Go-Getter? Brain Chemical May Tell).  Similar to the recent study in 2015, this study in 2012 suggests a similar point: laziness is most attributable to biology.

So readers, what do you think? Do you think there are some people who are just lazy no matter how much effort they put in? Should lazy people be taking antidepressants, which increase the level of dopamine?

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1 Comment

  1. Leukemia

    Biospearb, great article on such a relevant topic! I, for one, am immensely lazy… I take much interest in understanding why, even though I am motivated and would like to succeed in tasks, sometimes find no energy to do the task at the moment—hence my procrastination (note the time that this is written…). In addition to the neurological component of Laziness, it seems that it is also partially inherited! The genetics and experiences of your parents seem to affect the laziness of yourself. See this article, which also includes an ASAPScience video:

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