Biological Explanation of Aggression

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Created on: 12-01-16 12:53

Limbic System

A circuit of structures in the brain which deals with emotion and motivation, realted to aggression.

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Amygdala

Stimulation leads to rage and aggression, seen in psychopaths. Sends input to the Prefrontal Cortex.

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Prefrontal Cortex

Tries to regulate the information that the Amygdala sends and differentiates between good and bad behaviour,consequences, controlling urges.

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Aggression is caused by...

Amygdala is overstimulated, so feel constantly aggressive. Prefrontal Cortex doesnt control the stimulation of the Amygdala well.

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Neurotransmitters in the brain cause aggression.

Allow impulses to be sent around the brain, including Serotonin and Dopamine.

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Low levels of Serotonin

It inhibits aggressive responses. Particularly in the Prefrontal Cortex, people are unable to control their impulses and aggressive responses.

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High levels of Dopamine

Amphetamines increase the amount of Dopamine in the brain, associated to be aggressive.

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Hormonal mechanisms of the endorcrine system release hormones that increase aggression.

The hormone Testosterone is produced in the testes of men and both men and women convert DHEA which is produced in the adrenal glands into testosterone. It produces "male behaviours".

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Early exposure to Testosterone.

Organises the neural networks invloved in aggression which are then activated from further exposure. Then less testosterone is needed later to stimulate aggression.

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Ethical Reasons

Research has focussed on examinig the levels of teststerone shown by aggressive people and found it is correlational. It makes people more likley to engage in aggressive acts.

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Other cards in this set

Card 2

Front

Stimulation leads to rage and aggression, seen in psychopaths. Sends input to the Prefrontal Cortex.

Back

Amygdala

Card 3

Front

Tries to regulate the information that the Amygdala sends and differentiates between good and bad behaviour,consequences, controlling urges.

Back

Card 4

Front

Amygdala is overstimulated, so feel constantly aggressive. Prefrontal Cortex doesnt control the stimulation of the Amygdala well.

Back

Card 5

Front

Allow impulses to be sent around the brain, including Serotonin and Dopamine.

Back

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Biological Explanation of Aggression