Roles of neural mechanisms in aggression essay
The essential role of the VMHvl in male aggression was further highlighted by a recent study showing that pharmacogenetic activation of the VMHvl can induce aggression in naturally non-aggressive male mice, including mice that were group-housed, gonadectomized, or had reduced olfactory input. An overview is provided of the current understanding of the neural circuits of aggression across species and their modulation by internal state, highlighting an evolutionarily conserved 'core aggression circuit' consisting of four subcortical regions. Aggression is a social behavior that is essential for securing resources and defending oneself and one's family; Mental images play a role in a variety of cognitive processes, such as recalling memories. In this review, Joel Pearson discusses recent insights into the neural mechanisms underlying visual perception. Neurological research in primates, although difficult to conduct for behavioral and ethical reasons, is of great importance for understanding the evolution of neural-based human aggression. 3. Human aggression. Human aggression is heterogeneous behavior, influenced by various environmental and biological factors. Serotonin. Under normal conditions, the neurotransmitter serotonin acts on the frontal areas of the brain to inhibit the firing of the amygdala, the part of the brain's limbic system that controls fear, anger, and other emotional responses. Consequently, serotonin has a calming influence and low levels of serotonin mean that testosterone is also involved in aggression. Exam tip: In an exam answer on neural and hormonal mechanisms there should be some elaboration for reasonable AO, for example the origin and general role of testosterone, or an overview of the structures that make up the limbic system and their