Retrieved from https://en.wiktionary.org/w/index.php?title=natremia&oldid=48089399
One such reflex is a cough. This is typically triggered when the larynx senses that something has penetrated this upper portion of the airway. The cough, then, acts as a protective mechanism, serving to cough out or expel something at risk for being inhaled. There are normal reflexive thresholds or âtriggersâ that exist in the larynx. When these thresholds are lowered (i.e., more sensitive), less stimulation is required to trigger a cough.
It is also known that people with Parkinsonâs disease, who have lower dopamine levels in the brain, blink less frequently. Reflexive blinks are a response to an unexpected event, for example, if an object approaches your eye (such as when someone tries to put eye drops into your eye when you have an infection). Loud noises or any other startling event can also cause reflexive blinking.