Flashcards: Perception and Hallucination Fundamentals — 20 cards

Perceptive Function Components — elements?

Sensory receptors, central structures, learned discrimination, recognition, identification, mental representations.

Quantitative perception changes — example?

Hyperesthesia, hypoesthesia, dulling, or intensification.

Non-Hallucinatory Perceptions — characteristics?

Accurate, faithful perceptions of real objects or true mental images.

Illusions — definition?

Deformation of perception of a real object.

Hallucinations — types?

Psychosensory (sensory qualities) and psychic (mental images).

Psychosensory hallucinations — example?

Auditory voices, visual scenes, tactile sensations.

Psychic hallucinations — example?

Inner voices, thoughts perceived as external.

Hypnagogic phenomena — occur when?

During transition from wakefulness to sleep.

Perceptual derealization — feeling?

External world as strange or unreal.

Hallucination characteristics — key?

Perception without stimulus, vivid, often perceived as real.

Sensory receptors — role?

Detect environmental stimuli, initiate perception.

Central nervous structures — function?

Process sensory info, form perceptions.

Learned discrimination — purpose?

Differentiate stimuli based on experience.

Recognition — meaning?

Identify familiar stimuli or objects.

Identification — final step?

Assign specific name or function to objects.

Quantitative perception — states?

Dullings, intensifications, abolitions, distortions.

Illusions — common causes?

Emotional states like fear, anxiety.

Hallucinations — perception without?

External stimuli; perceived as real.

Psychosensory vs Psychic — difference?

Sensory qualities vs internal mental images.

Hypnagogic hallucinations — features?

Vivid, frightening, in darkness, passive.