"Touched" by light: event-related potentials (ERPs) to visuo-haptic stimuli in peri-personal space.

Parietal neuronal populations have been found which respond bimodally to visual and somatosensory input regarding one's own limbs or even perceived haptic input of a false limb (Graziano et al., Science 290:1782-1785, 2000). Further, neuronal populations have been observed which respond preferentially to visual stimuli presented in spatial congruence with our hands (Graziano, Proc Natl Acad Sci USA 96:10418-10421, 1999).