Figure 1.

Various modes of cortical body-image codings (a) and hierarchical structure of various classes of tools (c) corresponding to the putative hierarchy of internal representations (b). (a(i)) Combinatory usage of short and long rakes. (a(ii)) When monkeys used a monitor, a visual receptive field of representative intraparietal bimodal neurons was formed around the hand in the monitor, encompassing its somatosensory receptive field. (a(iii)) When monkeys used a rake to retrieve distant food, the visual receptive field encompassed the somatosensory receptive field of a representative intraparietal bimodal neuron extended along the rake. Reproduced with permission from Iriki & Sakura [6].