Biology 3593B Study Guide - Quiz Guide: Orbitofrontal Cortex, Periaqueductal Gray, Extraversion And Introversion
Document Summary
Dopamine (component of bas) plays key role in sensitivity to reward driving behavior that involves approaching potential reward. Extraversion manifested socially (e. g. speech) because many human rewards involve social affiliation or status. Dopamine most responsible for drive to achieve reward, rather than enjoyment of reward one its achieved wanting" rather than liking". In addition encompasses traits that reflect liking, e. g. positive emotionality, enjoyment of social interactions ( liking) Traits within enthusiasm likely to reflect action of endogenous opioid systems, which are involved in positive emotions that follow attainment or consumption of reward. Neurotransmitter like dopamine and endogenous opiates modulate specific neural networks that constitute brain"s reward and approach system. Positive associations with activity at rest or in response to positive stimuli medial orbitofrontal cortex, nucleus accumbens, amygdala, and striatum (found in mri studies) Mri studies found extraversion is associated with greater volume of medial orbitofrontal cortex region involved n coding value of rewards.
