The acoustic startle response is an unconditional reflex manifested as a rapid contraction of facial and skeletal muscles in response to a sudden and intense startling stimulus. Translational research ...

The startle response is a sudden, reflex-like response to an unexpected stimulus, such as a loud noise or bright light. It is an unlearned and largely unconscious defense mechanism shared by animals ...

This story is from The Pulse, a weekly health and science podcast. Subscribe on Apple Podcasts, Spotify or wherever you get your podcasts. Sometimes, I wish I had a sign on my chair, as if I were a ...