Dishabituation is defined as the reappearance of a habituated response following the presentation of a seemingly irrelevant novel stimulus; the tendency to show renewed interest in a stimulus when some features of it have been changed. Moreover, Dishabituation is a change in a familiar stimulus that prompts us to start noticing the stimulus again.It is an increase in responsiveness that occurs when stimulation changes. Dishabituation is a reversal of Habituation.