Thinking hard weighs heavy on the brain

Balance measures tiny changes in force due to blood flow behind thoughts

BALANCING ACT  In the 1880s, Angelo Mosso used the human circulation balance illustrated here to measure the movement of blood to the brain during taxing mental tasks. 

 S. Sandrone et al/Brain 2013

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Neuroscience

From the Nature Index

Paid Content