Brain Scan Cover Image: Fall 2012
![](https://mcgovern.mit.edu/wp-content/uploads/2012/12/Qian-Cover-A-lowres1.jpg)
Neurons in the brain of a transgenic mouse engineered to express a protein that emits light when neurons become active. Image: Qian Chen, Guoping Feng
Neurons in the brain of a transgenic mouse engineered to express a protein that emits light when neurons become active. Image: Qian Chen, Guoping Feng