Brain And Aggression Flashcards
Frontal, parietal, temporal, occipital
Rational decision impulse
Sensory and motor movt
Auditory ability, memory acquisition
Vision
Brain
Source of conscious awareness+ decision making , 2 hemispheres joined by corpus callosum
Contralateral
Left hemisphere controls right side vv
Aggression
Intended behaviour cause physical and psychological injury
Maintain dop and avoid physical harm
Amygdala
Decisions, emo regulation, motivation
Activation astd w aggression
How org respond to threats and challenges
So malfunc harmless events perceived threat= aggressive response vv
Prefrontal cortex
Regulates correct social behaviour and governs
Dekay gratification and control impulse
Dysfunc= impulsivity, lack of self control and inability to learn from consequences
How can dysfunction in amygdala lead to aggression?
Reduced activation
Lack of self control over aggressive impulses
Express as consequences aren’t considered
Hypothalamus
Maintain homeostasis eg body func sleep eat sex
Linked to testosterone= aggression and flight or fight
Symp nervous= kick into gear> body speeds, tenses,alert
Adrenal cortical= adrenaline, Inc heart rate and breathing
Overactive hypo linked to aggressive behaviour
Trugger flight or fight
Aggression by fight response
Combo of hyperfunc= dopamine
Strength
IRaine et al= struc diff betw brains of 41 imp violent murd
J Activity of prefront cortex, limbic, and various are linked differ when comp pet scans
E bio basis explaining diff in agg = as genes across ppl differ= diff brain areas more less active= diff lev agg
Weakness
I Exact inf of amygdala uncertain
J pardini = fMRI negcorr between aggression and amydgala vol w history of violence
E may not be activation of amygdala that causes aggression but alternative reasoning eg vol of amydgala
So questions weather activity or vol > agress
