The Online Encyclopedia and Dictionary






Reflex action

(Redirected from Reflex)

A reflex action or reflex is a biological control system linking stimulus to response and mediated by a reflex arc. Reflexes can be built-in or learned.


Reaction time

For a reflex, reaction time is the time from the onset of a stimulus until the organism responds.


A reflex mechanism involves a receptor organ, and effector organ, and some type of communication network.

Ivan Pavlov unintentionally launched the study of conditioning by establishing a way of producing what he called "conditional reflexes", i.e. reflexes that would only be seen conditional on previous experiences of the subject.

Reflex actions seen in adult humans include:

Processes such as breathing, digestion and the maintenance of the heartbeat can also be regarded as reflex actions, according to some definitions of the term.

Newborn babies have a number of other reflexes which are not seen in adults, including:

See also

External links

  • Reflexes in newborn babies