Abstract
Previous studies demonstrated that observing another’s grasping action modulates the observer's attention to the object that is congruent with its action goal. However, it is unclear whether the observation of tool-grasping also modulates visual attention. In this study we examined this question using a simple detection task in which the target stimulus is presented in a variety of SOA. The results indicated that participants detected faster the target presented over an object that is congruent with the size of the aperture of the tool than an object that is incongruent with the size of the aperture at a longer SOA. This result suggests that the cueing effect might be occurred by strategic allocation of attention based on temporal affordance by the degree of aperture of the tool.
