A new technique is allowing researchers to study the inner workings of a cuttlefish brain by tracking colour changing cells in their skin. These cell are directly controlled by neurons extending from the brain. By monitoring the cells with high resolution cameras, researchers can track the activity tens of thousands of neurons at once for the first time.
Read our news story here: https://www.nature.com/articles/d4158
And find the original research paper here: https://www.nature.com/articles/s4158