Non-informative Visual Resolution of the Body Modulates Tactile Acuity

抄録

A number of studies have demonstrated a visual enhancement of touch (VET) effect. Such effect shows viewing the body enhances tactile acuity. Although there is sufficient evidence that visible area and visual scale influence tactile perception, the extent to which visual properties uniquely modulate the effect is not fully understood. Despite its importance in visual processing, how visual resolution affects the VET effect has not been investigated. In the present study, we investigated whether viewing the body at a reduced resolution abolishes the VET effect. Our results demonstrate that visual resolution of the body also modulates the enhancement of tactile performance, since vision of the body at a reduced resolution worsens tactile discrimination acuity compared with seeing the body normally.