Chapter 13 part 2 Flashcards
Define brief psychotic disorder
i. Presence of one or more positive symptoms for less than a month
Define Attenuated psychosis syndrome
i. Involves onset of psychotic symptoms, and puts person at high risk of developing schizo
Define Schizotypal personality disorder
i. Less severe symptoms of schizo, but they are personality traits
What percentage of population has schizophrenia, regardless of culture?
1%
What are schizo stats for both men and women?
b. The older men get, the less vulnerable they get, while the opposite is true for women
What are childhood clinical features of schizo?
i. Mild cognitive and social problems, abnormalities and poor motor control
Define prodermal stage?
i. Period during which some symptoms appear before development of full symptoms
ii. One to two year duration
What are the chances of getting schizo is you are a family member? Twin?
a. Family members are at higher risk of developing schizo if member of the family has schizo
1. Even when the child is adopted, if the parents were schizo, they have higher likelihood of developing it
b. Identical twin has a 50% chance of getting schizo
What does quantitative trait loci mean?
- Schizo involves more than one gene
Connection of smooth eye pursuit to schizo
i. Smooth pursuit eye movement is downgraded in schizo
What two neurotransmitters are involved in schizo?
a. Dopamine
i. Dopamine system too active in schizo
ii. Neuroleptics that downgrade dopamine help people with schizo
iii. Conversely, increasing dopamine in schizo patients makes it worse
iv. Strong evidence that schizo caused by excessive stimulation of D2 receptors and under-stimualtion of D1 receptors
b. Glutamate
i. Alterations in prefrontal activity involving glutamate transmission
1. Deficit in glutatmate/ blocking receptors may cause the problem
what are two aspects of brain structure in schizo?
i. Enlargement of ventricles in most schizo patients
1. Seen more in men
ii. Hypofrontality
1. Low function levels in frontal lobes for schizo
How can viral infection be linked to schizo?
i. Could actually be caused by a virus
ii. May be caused by exposure to influenza during pregnancy
What are two stress hypotheses for schizo
i. Sociogenic hypothesis
1. Low social class is stressful, causing increased likelihood of schizo
ii. Social selection hypothesis
1. Schizo inability to hold job spirals them down to lower classes
Define expressed emotion
- The hostility, criticism, and over-involvement demonstrated by some families toward a member who has a psychological disorder can contribute to patient relapse
- EE can be high or low