AGGRESSION - Neural & Hormonal Explanations

What role does the Amygdala have?
How environmental threats are processed
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What happens if there is a problem with the Amygdala?
Information is misinterpreted, leading to an aggressive response
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What role does the Hypothalamus have?
Responsible for the regulation of the Autonomic Nervous System, which regulates emotional responses
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What happens if there is a problem with the Hypothalamus
An inappropriate aggressive response to a perceived threat
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What is Serotonin?
A Neurotransmitter
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What happens if levels of Serotonin are too low?
Communication between the Amygdala and Pre-Frontal Lobes weaker. This makes it more difficult for the Pre-Frontal Cortex to control emotional responses to anger, that come from the Amygdala
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What role does Testosterone have?
Increases the activity in the Limbic System. Changes in Testosterone levels influences aggressive behaviour, by increasing Amygdala reactivity during the process of a threat
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What animal research is there to support the role of the Limbic System in aggression ?
Bauman - Destruction of the Amygdala in monkeys lead to them loosing their dominant position in the group
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What human research is there to support the role of the Limbic System in aggression?
Gospic - Used brain scans of participants who had played an aggressive game. aggressive play was associated with a fast and heightened response in the Amygdala
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What animal research is there to support the role of Serotonin in aggression?
Rosado - Dogs with lower units of Serotonin were more aggressive than those with more Serotonin
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What human research is there to support the role of Serotonin in aggression?
Virkkunen - Tested the Cerebrospinal Fluid in violent impulsive offenders and found that they had much lower levels of Serotonin than normal
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What animal research is there to support the role of Testosterone in aggression?
Gimmanco - Dominant rats had more Testosterone flowing around their blood (making their Amygdala more reactive) than those who were submissive
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What human research is there to support the role of Testosterone in aggression?
Dolan - Found a positive correlation between Testosterone and levels of aggression in behaviors of male offenders. Most suffered from personality disorders (link between Testosterone and other disorders)
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Other cards in this set

Card 2

Front

What happens if there is a problem with the Amygdala?

Back

Information is misinterpreted, leading to an aggressive response

Card 3

Front

What role does the Hypothalamus have?

Back

Preview of the front of card 3

Card 4

Front

What happens if there is a problem with the Hypothalamus

Back

Preview of the front of card 4

Card 5

Front

What is Serotonin?

Back

Preview of the front of card 5
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