Illusions, Habituation, Dishabituation
Examples of Dishabituation
A buzzing light changes tone/pitch, ticking clock ticks at a different volume, pace or pitch etc.
Habituation
Habituation is the adjustment of attention to ignore a continuously repeated stimulus. You ignore it because it's not important for you anymore since it's useless.
Examples of Habituation
Some examples of habituation are the constant buzzing of a light, the consent ticking of a clock etc.
Dishabituation
The increased interest in a new stimulus that can occur when a change in the stimulation is so intense it causes us to pay attention to it again.
Illusions
They're a consistent perceptual error in interpreting a real external stimulus.