Sight. Sound. Touch. These are just a few of the senses that the body has. This theme of senses was the subject of a recent study by neuroscientists from the California Institute of Technology (Caltech) who reported a relationship between touch and emotion via the brain's primary somatosensory cortex. The findings, described in a recent issue of the Proceedings of the National Academy of Sciences (PNAS), were discovered by researchers Valeria Gazzola and Christian Keysers, who were visiting Caltech from the University of Groningen in the Netherlands. "Intuitively, we all believe that when we are touched by someone, we first objectively perceive the physical properties of the touch - its speed, its gentleness, the roughness of the skin," noted researcher Gazzola in the statement. "Only thereafter, in a separable second step based on who touched us, do we believe we value this touch more or less."
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