Grasping actions are directed not only toward objects we see but also toward objects we both see and touch (multisensory grasping). In this latter case, the integration of visual and haptic inputs improves movement performance compared to each sense alone. This performance advantage could be due to the integration of all the redundant positional and size cues or to the integration of only a subset of these cues. Here we selectively provided specific cues to tease apart how these different sensory sources contribute to visuo-haptic multisensory grasping. We demonstrate that the availability of the haptic positional cue together with the visual cues is sufficient to achieve the same grasping performance as when all cues are available. These findings provide strong evidence that the human sensorimotor system relies on non-visual sensory inputs and open new perspectives on their role in supporting vision during both development and adulthood.

中文翻译：

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触觉和视觉在人类多感觉抓取中的整合

抓握动作不仅针对我们看到的物体，而且还针对我们既看到又触摸的物体（多感官抓握）。在后一种情况下，与单独的每种感觉相比，视觉和触觉输入的集成提高了运动性能。这种性能优势可能是由于所有冗余位置和大小提示的集成，或者仅是这些提示的子集的集成。在这里，我们有选择地提供了特定的提示，以梳理这些不同的感官来源如何促进视觉-触觉多感官抓取。我们证明了触觉位置提示与视觉提示的可用性足以实现与所有提示可用时相同的抓取性能。