Serotonin
AO1:
• serotonin deficiency hypothesis
• Serotonin is a neurotransmitter involved in communication of impulses between neurons
• Works in frontal areas of brain to inhibit generation of impulses in amygdala
• Amygdala: anger, fear, and emotional response to sensory stimulus
• has calming influence
• Low levels means can’t control impulsivity
• Regulates PFC
• PFC =
• More aggressive easily
• can’t anticipate risk
AO3:
S: RALEIGH
• monkeys
• Increased tryptophan decreased agg
W: CONFLICTING EVIDENCE: HUBER
• incr serotonin levels in crayfish
• Incr time for fighting above natural
W: ANIMAL RES
• extrapolate to humans
• all forms of human agg? : verbal + passive agg
W: REDUCTIONIST
• only considers bio factors
• Ignores role of social + factors
• SLT:
• Agg learnt through observation and imitation of agg role models in our environment
, Limbic system,
AO1:
• reactive aggression
• LS: set of subcortical structures in the brain (incl amygdala + hypothalamus) involved in
regulating emotional behaviour
• Speed, and sensitivity, predictor of aggression
• Amygdala: attaches, emotional significance to sensory information
• fMRI scans : high amygdala activity during aggressive responses
• Hypothalamus: regulation of autonomic nervous system -regulates response to emotional
circumstances
• Damage results in inappropriate, aggressive, response and higher impulsivity
• connections to PFC - involved in anticipation of reward
• Regulate social behaviour and aggressive response
• Damage - reduce inhibition of amygdala + increased aggression
AO3:
S: LE DOUX
• electrical stimulation of amygdala in lab animals
• Fear + rage response
W: ANIMAL RES
• extrapolation
W: ROLE OF LIMBIC SYSTEM NOT CLEAR CUT
• OFC - self control
• COCARRO - psych patients w/ agg often red act in OFC
W: REDUCTIONIST - environment
• BANDURA
AO1:
• serotonin deficiency hypothesis
• Serotonin is a neurotransmitter involved in communication of impulses between neurons
• Works in frontal areas of brain to inhibit generation of impulses in amygdala
• Amygdala: anger, fear, and emotional response to sensory stimulus
• has calming influence
• Low levels means can’t control impulsivity
• Regulates PFC
• PFC =
• More aggressive easily
• can’t anticipate risk
AO3:
S: RALEIGH
• monkeys
• Increased tryptophan decreased agg
W: CONFLICTING EVIDENCE: HUBER
• incr serotonin levels in crayfish
• Incr time for fighting above natural
W: ANIMAL RES
• extrapolate to humans
• all forms of human agg? : verbal + passive agg
W: REDUCTIONIST
• only considers bio factors
• Ignores role of social + factors
• SLT:
• Agg learnt through observation and imitation of agg role models in our environment
, Limbic system,
AO1:
• reactive aggression
• LS: set of subcortical structures in the brain (incl amygdala + hypothalamus) involved in
regulating emotional behaviour
• Speed, and sensitivity, predictor of aggression
• Amygdala: attaches, emotional significance to sensory information
• fMRI scans : high amygdala activity during aggressive responses
• Hypothalamus: regulation of autonomic nervous system -regulates response to emotional
circumstances
• Damage results in inappropriate, aggressive, response and higher impulsivity
• connections to PFC - involved in anticipation of reward
• Regulate social behaviour and aggressive response
• Damage - reduce inhibition of amygdala + increased aggression
AO3:
S: LE DOUX
• electrical stimulation of amygdala in lab animals
• Fear + rage response
W: ANIMAL RES
• extrapolation
W: ROLE OF LIMBIC SYSTEM NOT CLEAR CUT
• OFC - self control
• COCARRO - psych patients w/ agg often red act in OFC
W: REDUCTIONIST - environment
• BANDURA
