The graph displays a key difference between mental silence based meditation and other types of meditation.
Previous definitions of meditation have not differentiated between meditation and relaxation. A key feature of relaxation is that skin temperature increases with the reduced physiological arousal.
This graph shows data from a heuristic physiological study where mental silence meditators manifested reductions in skin temperature during meditation thereby contradicting the “reduced physiological arousal” conceptualisation of meditation.
Amazing! Scientific evidence is gradually validating the effects of the actual state of meditation.