This image shows the CNiFERs implanted into a mouse brain.

Real Time Readout of Neurochemical Activity

Implanted engineered cells with fluorescent dyes which change color in response to dopamine and norepinephrine allows researchers to observe changes in neurosignalling in real time, a new study reports.
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.