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 ...

The SR-LAB startle response system is the world's most popular startle reflex research tool for assessing fear-potentiated startle (FPS), pre-pulse inhibition (PPI), and startle habituation. SR-LAB ...