Psych V

Disorder of perception can be inclusions, hallucinations and pseudohallucinations.

Illusion is a false perception in the absence of a real external stimulus.

Hallucinations is perceived as being located in objective space and as having the same realistic qualities as normal perceptions.

Pseudohallucinations is a form of imagery arising in the subjective inner space of the mind. It lacks the substantiality of normal perceptions and occupies subjective rather than objective space.