Researchers believe we are a step closer to having such a drug to treat post-traumatic stress disorder, or PTSD.
Mice were given a medication that triggers a brain receptor thought to be involved in how mice and people respond to fear.
Researchers were able to prevent the PTSD symptoms in the lab animals.
The study in the journal Science Translational Medicine suggests the possibility that similar drugs could one day be given to people after combat, car accidents or other types of trauma.
