This article explores how neurological variations in brain chemistry, structure, and function, contribute to differences in personality traits. It focuses on five universal personality dimensions: extraversion, conscientiousness, rationality, neuroticism, and openness. It highlights how these traits are influenced by neural systems such as dopamine pathways in reward and curiosity, prefrontal cortex activity in planning and rational control, DMN-ECN functional connectivity in imagination and goal-directed behavior, limbic processes in emotional reactivity and stress response, and more brain structures — concluding personality has innate predispositions while considering the role of environmental factors in shaping personality.
Nicole Gemma Suryadi (Thu,) studied this question.