Pulling your hand away from a hot object, blinking because it's very bright or kicking when someone taps the tendon below your kneecap - these are all innate reflex actions. They happen rapidly ...

- OCR 21st Century Reflex arc Survival of an organism depends on its ability to respond to changes in the environment. The nervous system allows fast acting but short lived responses.

Hyper-reflexia, measured as a decrease of low frequency-dependent depression of the H-reflex, is known to occur in both humans and animals after spinal cord injury (SCI). Previous studies have ...