Looking at the hand modulates the brain responses to nociceptive and non-nociceptive somatosensory stimuli but does not necessarily modulate their perception.

ABSTRACT: Previous studies have suggested that looking at the hand can reduce the perception of pain and the magnitude of the ERPs elicited by nociceptive stimuli delivered onto the hand. In contrast, other studies have suggested that looking at the hand can increase tactile sensory discrimination performance, and enhance the magnitude of the ERPs elicited by tactile stimulation. These opposite effects could be related to differences in the crossmodal effects between vision, nociception, and touch. However, these differences could also be related to the use of different experimental designs. Importantly, most studies on the effects of vision on pain have relied on a mirror to create the illusion that the reflected hand is a direct view of the stimulated hand. Here, we compared the effects of direct

SUBMITTER: Torta DM 

PROVIDER: S-EPMC5338730 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature