Some researchers now believe that one of the keys to the development of schizophrenia lies in the process of synaptic pruning? Which of the following illustrates this term?
a) High levels of dopamine reduce the number of dendrites in the brain.
b) Neurons selectively reduce the number of branches of their dendrites.
c) Antipsychotic drugs may reduce schizophrenic symptoms but they also
adversely affect the number of dendrites.
d) Destruction of certain neural pathways make it possible for the brain to experience hallucinations that occurs in schizophrenia.
b
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Drugs such as barbiturates and alcohol are classified as depressants because they
a. inhibit the transmission of nerve impulses in the central nervous system. b. lead to tolerance. c. bring about depression when they are not being used. d. are likely to cause a variety of mood disorders, especially depression.
Which of the following personality disorders describes a person who is dramatic and flamboyant and who exhibits excessive emotional and attention seeking behavior?
a. dependent b. histrionic c. obsessive-compulsive d. schizoid