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. 2017 Nov 16;12(11):e0187942. doi: 10.1371/journal.pone.0187942

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© 2017 Van Grootel 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 credited.

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Fig 3 — Voxels in areas V1 (yellow), MT-V5 (blue) and V4 (green). (A,B) Average BOLD for five representative sessions, three from infants (left, panel A) and two from adult (right, panel B). Solid black lines are average BOLD activation to pinwheel on-off alternations (8–12 repetitions). colored areas are standard deviations. The horizontal black bars indicate the time of stimulus presentation. (C) Signal divided by noise (Signal to noise ratio, SNR) as function of age. Signal is the amplitude at the frequency of the stimulus alternation (FF). The noise is the average of the amplitudes of the flanking, not stimulus related frequencies (0.5 FF and 1.5 FF). The signal exceeds noise when SNR > 1 indicated with a dashed line.