Perception Flashcards
What is perception?
Conscious awareness of elements in the environment, sensory stimulus.
. What is illusion?
Perceptual misinterpretation of real external stimulus-
What is hallucination?
False sensory perception in the absence of any real external stimulation (no object)
Pseudo hallucination?
Perceptions experienced as coming from within the mind (blur-blur)
Diff between pseudo & hallucination?
Hallucination: objective, real wherepseudo : inner eye.
Hallucinatim:bright, pseudo: dim
Auditory hallucination?
False perception of sound, voices n very common.
Command hallucination
Orders that a person may feel obliged to obey-
Imperative hallucination
A form of command hallucination. Very iresistable
Audible thoughts
Hallucinated voices that speak aloud what the patient is thinking
What is audible thoughts seen in
Schizophrenia.
Visual hallucination?
Sense of sight
What is visual hallucination seen in?
Not schizophrenia but more organic states like occipital tumors ‘glue - petrol sniffing.
Autoscopic hallucination?
Visual perception seeing oneself, seen in schizophrenia,epilepsy & depression.
Gustatory hallucination.
Hallucination mulling taste
Olfactory hallucination.
Smell, odors, seen m temporal lobe seizures.
Tactile hallucination
Sense of touch
Somatic hallucination
Perception of physical experience localized within the body.
Synaesthesta (reflex hallucination)
A sound produces a sensation of color. → LSD& stimulant drugs.
Functional hallucination
External stimulus to provoke hallucination
Extracampinehallucination
Outside the limits of sensory field.
Elemental hallucination
False perceptions are very simple form.
Hypnagogic hallucination.
Hallucination while falling asleep
Hypnopompichallmination
Hallucination while awakening from steep
Depersonalizations
Feels that one is not real, seen in schizophrenia, depersonalization disorders, schizotypal personality disorder.
