Reflex actions are automatic or involuntary movement of living organisms provoked by a sensory stimulus. For example, will if a person accidentally touches a very hot object, he or she will jerk away without thinking about what action to take. Reflex actions aer of two types - unconditioned reflexes and conditioned reflexes. The unconditioned reflex are the reflexes that are part of the basic bodily functions which are not dependent on individuals past experiences with a particular type of stimulus. For example the pupil of our eyes automatically expand in darkness and contract in light.
Conditioned reflexes, in contrast are reflexes, which an individual learns from previous experiences with similar stimulus. These reflexes work by individuals learning to associated the stimulus with something else. For example, a dog may begin to salivate with smell of food because the dog has learnt to associate the smell with the food.
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