Brain structure theory of aggression
- Created by: 11pyoung
- Created on: 14-04-17 13:33
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- Brain structure theory of aggression
- Pre-frontal Cortex
- Controls social interactions
- Regulates behaviour
- Regulates amygdala
- Controls aggression
- Regulates amygdala
- Controls aggression
- Damage to the Pre-frontal Cortex can lead to:
- Impulsivity
- Irritability
- Anger management
- Amygdala
- Source of aggression
- Emotions and motivation
- Reacts to internal and external stimuli
- Mid-brain
- PAG
- Links the Amygdala and Hypothalamus to the Pre-frontal Cotex
- Rat experiment
- Lesions to PAG
- Aggression levels rose
- Lesions to PAG
- PAG
- Hypothalamus
- Maintains homeostasis
- Regulates the hormone testosterone
- causes aggression
- Evaluation
- Andy and Velamati
- Stimulated the hypothalamus and limbic system of Cats resulting in aggressive seizures
- Blocking dopamine caused aggressive seizures
- Shows the role of brain and neurotransmitters are linked to aggression
- Shows the role of brain and neurotransmitters are linked to aggression
- Blocking dopamine caused aggressive seizures
- Blocking dopamine caused aggressive seizures
- Stimulated the hypothalamus and limbic system of Cats resulting in aggressive seizures
- Downer
- Monkeys had one amygdala removed
- When visual signals were sent to the intact amygdala it led to normal behaviour.
- When sent to the amygdala that was removed it led to calmer behaviour
- Shows amygdala as the source of decisions regarding aggression from external stimuli
- Shows amygdala as the source of decisions regarding aggression from external stimuli
- When sent to the amygdala that was removed it led to calmer behaviour
- When sent to the amygdala that was removed it led to calmer behaviour
- When visual signals were sent to the intact amygdala it led to normal behaviour.
- Monkeys had one amygdala removed
- By reducing behaviour that is observed the whole behaviour of the organism cannot be studied
- This can miss out important elements of complex behaviour found in animals and humans
- Animal studies cannot be generalised to humans because of differences between humans and animals
- Scanning is reliable but has validity issues
- Scanning can only take place while participant is processing information
- Task is artificial and as it is not a normal task it lacks mundane realism
- Scanning can only take place while participant is processing information
- Andy and Velamati
- Pre-frontal Cortex
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