Figure 5.

Summary of pACC projections and possible relationship with laughter functions. The interplay between pACC representation of laughter and social, emotional and motor functions (left panel) can be accounted for by the outward connectivity of the pACC towards frontal and limbic regions (right panel). The colour code is evocative of the functions derived by HF-ES and other data debated in the discussion (red, motor; orange, speech; violet, interoceptive/emotional; blue, somatosensory; grey, unresponsive). Abbreviations as in figure 2. (Online version in colour.)