The Integration of Emotional Expression and Experience: A Pragmatist Review of Recent Evidence From Brain Stimulation

A common view in affective neuroscience considers emotions as a multifaceted phenomenon constituted by independent affective and motor components. Such dualistic connotation, obtained by rephrasing the classic Darwin and James's theories of emotion, leads to the assumption that emotional expression is controlled by motor centers in the anterior cingulate, frontal operculum, and supplementary motor area, whereas emotional experience depends on interoceptive centers in the insula. Recent stimulation studies provide a different perspective. I will outline two sets of findings. First, affective experiences can be elicited also following the stimulation of motor centers. Second, emotional expressions can be elicited by stimulating interoceptive regions. Echoing the original pragmatist theories of emotion, I will make a case for the notion that emotional experience emerges from the integration of sensory and motor signals, encoded in the same functional network.