Reflex
A reflex, also known as reflex action or physical reflex, was an automatic neurological response to outside stimuli.

In 2267, Doctor Leonard McCoy found the reflexes of colonists from Omicron Ceti III to be perfect. ()

Later that year, due to the reduction of his reflexes, Spock declined command of the  in Captain Kirk's stead while suffering from premature aging. ()

Types 
 Autonomic reflex
 Choking reflex
 Cognitive reflex
 Defense reflex
 Physical reflex
 Shivering
 Sneeze
 Yawn

See also 
 Reaction time

External link 
 
Physiology