Found: A Possible Link Between Emotional Memories & Sensory Triggers

If there's a certain smell or sound that instantly brings back traumatic memories, it could be because those memories are stored—at least in part—in brain regions associated with the input of your senses, according to a study this week in Science. Neuroscientist Benedetto Sacchetti went looking in rat brains for the neural connections between the senses and intense memories.