![Temperature scale on the left hand side, using a colour scale that is mirrored in the brain on the right hand side which illustrates the varying temperatures across brain regions](https://www2.mrc-lmb.cam.ac.uk/wordpress/wp-content/uploads/HEATWAVE-THUMBNAIL-1-150x150.jpg)
A clinical study, led by Nina Rzechorzek in John O’Neill’s group at the LMB, showed that healthy human brain temperature varies far more than previously assumed—by age, sex, brain region, and time of day. This has major implications for patients, suggesting that daily rhythmic brain temperature variation is critical to brain function.