Biological Explanations Flashcards
(13 cards)
What percent of the population has Schizophrenia
1%
What percent of concordance in twins (Gottesman)
MZ: 48%
DZ: 17%
What does Aetiologically Heterogenous mean
The origin has numerous causes
How many genetic variations are there for schizophrenia
108
What does polygenic mean
Determined by a number of genes
What is the Dopamine Hypothesis
Either too much or too little dopamine can cause symptoms of schizophrenia
What area of the brain associated with Reward related behaviour is involved in schizophrenia
Ventral striatum, low activity causes Avolition
Which area of the brain associated with hearing and understanding is involved in schizophrenia
Superior Temporal Gyrus and the Anterior Cingulate Gyrus, associated with auditory hallucinations
What is an Issue with Neural Correlates
Can’t establish cause and effect
The assumption is that The low Activity in the Ventral Striatum leads to Avolition even though it could be Avolition that leads to low activity in the ventral striatum
What is Hyperdopaminergia
Too much Dopamine in the synapse
What is Hypodopaminergia
Too little dopamine in the synapse
Where does Hyperdopaminergia effect and what does it cause
the Broca’s area, it causes speech poverty
Where does Hypodopaminergia effect and what does it cause
The prefrontal Cortex, causes difficulty with decision making
