Depression is well known for dulling people’s sense of pleasure, and now, researchers have used high-tech brain scans to watch that happen inside the depressed brain.

Their findings — which appear in the advance online edition of NeuroReport — show that when depressed people listened to music they liked, the brain’s reward-processing areas weren’t as active as when people who weren’t depressed listened to their favorite music.

Depression Dulls Brain’s Pleasure Sites .