We all jump at an unexpected noise or touch, but in some people, this startle response is exaggerated, and can cause falls and even death. Now, researchers in the United Kingdom have found new genes ...

A door suddenly slams. A balloon pops without warning. Fireworks explode nearby, and one person barely notices while another instinctively jumps, gasps, or feels their heart race. These reactions are ...

Hyperekplexia is a genetic condition characterized by an exaggerated startle reaction to sudden loud sounds, movement, or touch. The muscles may stiffen as a result. Hyperekplexia is a rare condition.

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 acoustic startle response is an unconditional reflex involving rapid facial and skeletal muscle movements triggered by sudden, startling stimuli like sound or light. Studying the acoustic startle ...