Biological Assumption

Created by: Mbegum
Created on: 28-12-18 17:23

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Biological Assumptions
- Evolutionary Influences
  - Theory of Evolution
    - Mind + behav change
      - to adapt to demands of indiv enviro
  - Theory of Natural Selection
  - Environment of Evolutionary Adaptiveness
    - the enviro that any species is adapted to + the selective pressures of the time
      - not all behav is adaptive
        behav only adaptive if increases survival in enviro
        E.g large brain:body ratio = brain evolved in response to complex social organisations
- Localisation of brain function
  - Principle = certain areas of brain responsible for different functions
    - E.g cerebral cortex = covers all around brain + responsible for higher order cognitive function
  - The Four lobes
    - Frontal lobe
      - involved in thinking & creativity
        linked w/ our personalities
    - Parietal lobe
      - Receives sensory info
        e.g temp + pressure
    - Temporal lobe
      - Responsible for most of memory processing + auditory info
    - Occipital lobe
      - concerned w/ visual processing
        receives info from eyes
  - Localisation of Language
    - Broca's Area
      - associated w/ speech production
        posterior frontal lobe
    - Wernicke's Area
      - associated w/ understanding lang
        posterior left temporal lobe
- Neurotransmitters
  - Mental Health
    - Serotonin
      - role in sleep + mood + appetite
      - low levels
    - Dopamine
      - high levels
        associated w/ scz symptoms
        evidence = dopamine blocking drugs = reduce scz symptoms
  - Neurons
    - Electrically excitable cells
    - Communicate = at synapse
      - message via chemical messengers AKA NT's
        NT's released from presynaptic vesicle
        Inhibit/stimulate receptors at postsynaptic receptor

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Biological Assumption

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