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1. Damage to the frontal lobe may cause increased irritability andmake people short tempered, impulsive or more easily provoked.Women have proportionally larger frontal…
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  • 1. Damage to the frontal lobe may cause increased irritability andmake people short tempered, impulsive or more easily provoked.Women have proportionally larger frontal brain regions than mensuggesting that women may be better able to control emotionalresponses than men.A virus that damages the temporal lobe making animals very aggressive.Tamping iron went through his frontal lobe causing him tobecome aggressive.
  • 2. Hypothalamic tumours can increase irritability in humans.•Can indicate aggressive behaviour in cats when stimulated.•If you stimulated one region it would produce predatorial aggression.•If you stimulated another region it produces a rage response.Involved in stress response. Electric stimulation can stimulateaggressive responses in animals.Lesioning can increase or decrease aggressive behaviour inanimals.•Had a tumour pressing on his amygdala.•Went in a tower with rifle & shot people in ‘66.•Police found note asking for his brain to beexamined.
  • 3. •What’s true of animals may not be true of humans•Difficult to generalise from case studies.Some are against animal research – violates animal rights.•Just focusing on brain function not the whole person.•Deterministic – no free will, can’t be held morally responsible.•E.g. Human warfare isn’t a consequence of mass brain damage.•Much human behaviour is learnt (bobo)Anti-depressants could reduce impulsive aggressive behaviour.
  • 4. Violent criminals have lower levels of serotonin than non violent onesDrugs which reduce serotonin increased aggression in males but notfemales.- Gender bias – much research on males, men and women mayrespond differently.•Alcohol decreases serotonin•Recent research has shown that alcohol can increaseblood plasma levels of testosterone.
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