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. 2013 Dec 23;4:208. doi: 10.3389/fneur.2013.00208

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Copyright © 2013 Karl and Whishaw.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Representative still frames illustrating (A) the Preshape strategy used to acquire a visible target and (B) the Touch-then-Grasp strategy used to acquire an unseen and unknown or uncertain target. Note: for the Preshape strategy the Reach and the Grasp are temporally integrated such that the hand preshapes and orients to the intrinsic properties of the target before touching it. For the Touch-then-Grasp strategy the Reach and the Grasp are temporally dissociated such that the hand does not shape to the intrinsic properties of the target until after touching it.