Complex sentence: The physical component of pain is processed in the medullary spinal cord and perceived in the frontal cortex, however, pain perception involves overlapping sensory systems and an emotional component, making individual response to identical stimuli variable.
Split into simpler sentences: The physical component of pain is processed in the medullary spinal cord and perceived in the frontal cortex. H, pain perception involves overlapping sensory systems and an emotional component, making individual response to identical stimuli variable.