[Neuroethics (II): moral pathways in disordered brain]

Area of Science:

• Neuroscience
• Neurobiology
• Cognitive Science

Context:

• Morality, governed by brain circuits, underpins social accomplishments.
• Lesions or dysfunctions in these pathways alter moral behavior.

Purpose:

• To elucidate the mechanisms of moral dysfunction across various neurological conditions.
• To correlate specific lesions and neurochemical/genetic alterations with moral pathologies.

Summary:

• Moral dysfunctions arise from structural lesions (prefrontal cortex, amygdala), neurochemical imbalances (dopamine), or genetic factors (COMT, MAO enzymes).
• These dysfunctions involve excitatory, inhibitory, or mixed mechanisms within emotional (temporal lobe) and cognitive (prefrontal lobe) moral circuits.
• The topography and mechanisms explain diverse clinical presentations of moral pathology.

Impact:

• Enhances understanding of healthy moral circuits (anatomical and physiological).
• Provides insights into ethical variations across cultures.
• Crucial for advancing the complex field of neuroethics and neuroculture.