The Moro reflex is a startle response in babies that makes their arms extend and retract. Newborns grow out of the Moro reflex within the first two months of life. The absence or extreme presence of ...

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 ...

If you received a sharp blow from behind, almost instantly your eyes would close, your heart rate would shoot up and much much more BOO! Did that startle you? Of course not. But if you received a ...

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 ...