3.5.4 Aggression

The Neural Circuits in Aggression and How These Can be Disturbed n Psychiatric Disorders

The neural circuits involved in aggression are complex and involve many different brain regions and neurotransmitter systems.

One of the key brain regions involved in aggression is the hypothalamus, which is a region of the brain that is involved in the regulation of many of the body’s basic functions, including aggression. The hypothalamus receives input from other brain areas that are involved in emotional processing, such as the amygdala, and can stimulate the release of hormones, such as testosterone and cortisol, that are associated with aggressive behaviour.

The amygdala, which is a brain region involved in emotional processing and decision-making, is also thought to play a role in aggression. The amygdala receives input from sensory systems, such as the visual and auditory systems, and can help to modulate the intensity of aggressive behaviour in response to threats or other challenges. It can also help to regulate the expression of aggressive behaviours in appropriate social contexts.

The prefrontal cortex, which is a brain region involved in decision-making and impulse control, is also thought to play a role in aggression. The prefrontal cortex can inhibit aggressive behaviour and help to regulate the expression of aggressive behaviours in appropriate social contexts. It can also help to regulate the expression of aggressive behaviours in response to different stimuli and challenges.

Other brain regions and neurotransmitter systems that are involved in aggression include the basal ganglia, which are involved in the control of movement and motivation, and the serotonin and dopamine systems, which are neurotransmitter systems that are involved in mood and emotion.

Overall, the neural circuits involved in aggression are complex and involve many different brain regions and neurotransmitter systems. These circuits are influenced by a variety of hormones and other factors, and they help to regulate the expression of aggressive behaviours in response to different stimuli and challenges (Coccaro, 2008).

References:

(1) Coccaro, E. F. (2008). Neuroimaging studies of aggression and impulsivity. Journal of Clinical Psychiatry, 69(Suppl 2), 4-11.