The Dopamine Hypothesis

  • Created by: lwilson23
  • Created on: 07-11-18 12:29
What is the effect of dopamine on the brain?
Increases the amount of neurons which fire and therefore increases brain activity.
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What is hyperactivity and where does it occur?
It is when too MUCH dopamine is present, causing too many neurons to fire and an excess in activity, causing negative symptoms. Occurs in the mescolimbic pathway.
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What is hypoactivity and where does it occur?
Too LITTLE dopamine is present, triggering negative symptoms. Occurs in mesocortical pathway.
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Supporting evidence 1
Levodopa - a drug used to treat parkinson's patients by increasing dopamine levels causes Sz if not administered correctly.
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Refuting evidence 1
Link is purely correlational and as such is hard to prove cause and effect.
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Supporting evidence 2
Seidman's post-mortems - more dopamine receptors found in schizophrenics.
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Refuting evidence 2
Unclear direction of effect - is excess dopamine receptors the symptom or the cause?
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Supporting evidence 3
Ease of research allows greater application in society - anti psychotics for example.
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Refuting evidence 3
Reductionist as only focuses on nature.
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Card 2

Front

What is hyperactivity and where does it occur?

Back

It is when too MUCH dopamine is present, causing too many neurons to fire and an excess in activity, causing negative symptoms. Occurs in the mescolimbic pathway.

Card 3

Front

What is hypoactivity and where does it occur?

Back

Preview of the front of card 3

Card 4

Front

Supporting evidence 1

Back

Preview of the front of card 4

Card 5

Front

Refuting evidence 1

Back

Preview of the front of card 5
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