A part of the brain that helps control sleep cycles has been imaged laflor/Getty Images
We have taken our closest look at the activity of a tiny brain region thought to be involved in the human circadian clock.
Johanna Meijer at Leiden University in the Netherlands and her colleagues have been studying the suprachiasmatic nucleus, which sits in the hypothalamus and is thought to play a role in regulating our sleep cycles. However, because this structure is less than 2 millimetres wide it is difficult to image using an MRI – and that means it is challenging to record its activity.…
