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. 2009 Sep 4;5(9):e1000495. doi: 10.1371/journal.pcbi.1000495

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Berkes et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A) Basis vectors corresponding to one of the identity variables in the learnt model (row 14 in Fig. 2). B–D) Response to a drifting sine grating at the preferred orientation and frequency. The stimulus is presented starting at phase 0 deg, and removed after it reaches phase 180 deg. B) Response of the identity variable, . C) Response of the attribute variables, . D) Response of the attribute variables as in C, displayed as a trajectory over the 3D attribute manifold.

Inline graphic — A) Basis vectors corresponding to one of the identity variables in the learnt model (row 14 in Fig. 2). B–D) Response to a drifting sine grating at the preferred orientation and frequency. The stimulus is presented starting at phase 0 deg, and removed after it reaches phase 180 deg. B) Response of the identity variable, . C) Response of the attribute variables, . D) Response of the attribute variables as in C, displayed as a trajectory over the 3D attribute manifold.