1. Indicate possible changes in function or structures of prefrontal cortex associated with exposure to: a....

1. Indicate possible changes in function or structures of prefrontal cortex associated with exposure to:

a. drug exposure

b. head trauma

c. psychological/cognitive/behavioral mistreatment or abuse

2. describe changes in the structure of prefrontal cortex associated with aging

Expert Solution

1 a) Prefrontal cortex is an important structure responsible for decision making, cognitive planning,thinking,making decision and self control over impulses. Long term drug exposure can cause altered signals from prefrontal area which leads to following signs and symptoms.Long term drug exposure causes addiction, reduced or inappropiate signals from prefrontal cortex.

1 b) Effect of head trauma on prefrontal cortex

Making inappropriate comments
Alteration in patience and tolerance of others
Depression
Not responding appropriately to social cues
Socially inappropriate sexual comments or behaviors
Increased or decreased interest in sex
Insomnia
Attention and concentration problems
Difficulty solving complex problems
Slowed critical thinking
Increased or decreased talkativeness
Lack of spontaneous facial expression
Movement impairments
Language difficulty
Impulsive, dangerous behaviors
Substance abuse

1 c) Psychological or behavioral abuse causes depression, delayed cognitive development,Increased neurotransmitter release.

2 Aging causes decline in sensory perceptual processing and executive control processes. Slowness or decreased speed in cognitive processing and increased reaction time are characteristic features of aging.

Sydney Mullin answered 1 year ago

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