To grasp a good understanding to this peripheral theory, I’d like you to imagine that you are on a camping trip. You and your family go fishing, you toast marshmallows, tell ghost stories, and then you tuck yourselves in for the night. The next morning you wake up to a ruckus, as you zip open your tent you see a roaring bear towering over you!
At this point you would assume you’d be screaming but Lange’s peripheral theory of emotion states that not until your heart rate rises will your brain receive signals of danger and fear. Some scientists believe that emotional responses are on a loop but Lange’s theory has yet to be disproven.