After Surviving a Particularly Violent Tornado, Dean Experiences a Selective

question 25

Multiple Choice

After surviving a particularly violent tornado, Dean experiences a selective memory loss for specific traumatic events that occurred just before and during the disaster. Other than these specific memory losses, Dean's personality and subjective sense of identity are essentially unchanged. Dean would most likely be diagnosed with:

• A) dissociative identity disorder.
• B) schizophrenia, disorganized type.
• C) dissociative fugue.
• D) dissociative amnesia.

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Definitions:

Frequency Theory

A theory in the field of psychology that suggests the rate at which nerve impulses are fired in the auditory nerve corresponds to the frequency of a sound wave, enabling us to detect its pitch.

Volley Principle

A theory in auditory neuroscience suggesting that groups of neurons can provide a temporal coding for frequencies by firing in rapid succession, allowing the brain to perceive sounds up to about 5000 Hz.

Binaural Cues

Sounds that enable the brain to perceive direction and distance by comparing the input from both ears.

Interposition

A visual cue in which one object partly blocks another, suggesting that the blocking object is closer to the observer.