(1) Reflex action is a sudden, spontaneous automatic, involuntary response to stimulus.
(2) Reflex actions based on previous experiences are categorized into two types:
(a) Unconditional reflexes
(i) These do not require any previous experience.
(ii) Examples: sneezing, coughing, yawning, hiccupping
(b) Conditional reflexes
(i) These actions are based on previous experience.
(ii) Examples: swimming, dancing, cycling etc
(iii) Initially these actions are voluntary when learning is being done, later after perfection they become involuntary.