This image shows a mouse hippocampus.

Memories Get the Emotional Switch

A new study reports neurons which encode whether a memory is negative or positive can be reprogrammed to change the emotional association of the experience. Findings could have implications for future research into PTSD.
This image shows a model surgical robot with the device entering the cheek area.

Brain Surgery Through the Cheek

Researchers develop a working prototype of a neurosurgical robot which can enter the brain through the cheek and perform delicate hippocampal surgeries for epilepsy patients.