Differences between children and adults in components of the startle response are reported often across studies. This could be due to actual developmental.
The following findings in humans are consistent with the startle reflex . A startle response is normally seen in children and adults in response to sudden.
In animals, including humans, the startle response is a largely unconscious defensive response to sudden or threatening stimuli, such as sudden noise or sharp.
Arching of the head (exaggerated head-retraction reflex or HRR), spastic jerking In children and adults, intensity of the startle response may be affected by.