Biological Approach Flashcards
(75 cards)
What is assumption1 of the biological approach?
Behaviour can be explained by neurotransmitters
Neurons
-b
-assumption 1
process/transmit neurotransmitters through chemical signals
Synaptic transmission
-b
-assumption 1
Neurotransmitter released from presynaptic vesicle
Serotonin
-b
-assumption 1
mood, sleep, appetite
increase serotonin uptake to help with depression
Dopamine
-b
-assumption 1
schizophrenia symptoms
drugs can decrease the level
What is assumption 2 of the biological approach?
Localisation of brain function
Frontal lobe
-b
-assumption 2
BROCAS AREA
X fine motor skills, personality changes
- Broca’s aphasia
= THINKING
Temporal lobe
-b
-assumption 2
WERNICKE’S AREA
X trouble understanding
X change in emotional state#
= SPEECH
Occipital lobe
-b
-assumption 2
X perception issues, blind spots
= VISUAL INFO
Parietal lobe
-b
-assumption 2
X numb, tingling, don’t feel pain
= PAIN- SENSORY INFO
Example
-b
-assumption 2
PHINEAS GAGE
- damage to frontal lobe
- personality changed
- memory and cognitive strength not altered
What is assumption 3 of the biological approach?
Evolutionary influences
Evolutionary influences
-b
-assumption 3
- genotype is changeable
- caused by the process of natural selection
- survival, mating, phobias
Charles Darwin
-b
- assumption 3
> genetically determined behaviour that enhances survival will be naturally selected
inherited traits–> Nyctophobia (fear of the dark)
EEA- Environment of Evolutionary Adaptiveness
-b
-assumption 3
species adapt due to selective pressure
- large brains#
- form alliances & relationships
What is the therapy for the biological approach?
Drug therapy
Component 1 of drug therapy
Antipsychotic drugs
Antipsychotic drugs
Conventional
C1
(chlorpromazine)
- binds to dopamine receptors and blocks them
- this decreases the flow of dopamine so it doesn’t stimulate
X confusion
X Tardive Dyskinesia - uncontrollable, irregular movements
Antipsychotic drugs
Atypical
C1
(clozapine)
- temporarily blocks receptor sites so they disassociate with the normal dopamine flow
X blurred vision, tiredness
Component 2 of Drug Therapy
Antidepressant drugs
Antidepressant drugs
Selective-serotonin-reuptake inhibitors
C2
(prozac)
- bind to post-synaptic receptor site in neuron
- stops reuptake of serotonin so that less is absorbed
- more serotonin builds up in the synaptic cleft
- more becomes available within the brain
X nausea, weight gain, fatigue, symptoms worsen, dizziness
Component 3 of drug therapy
Anti-anxiety drugs
Anti-anxiety drugs
Benzodiazepines
C3
(valium)
- slows CNS activity
- enhance GABA
X confusion, drowsiness, lightheaded
Anti-anxiety drugs
Beta- Blockers
C3
- binds to receptors in aroused areas and block them
- slows their function
-heart rate, blood pressure decreases - less anxious
X confusion, drowsiness, lightheaded