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. 2013 Feb 13;8(2):e56087. doi: 10.1371/journal.pone.0056087

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© 2013 Kikuchi 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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For ASD and TD children, the hemodynamic spectra were calculated with the fast Fourier transform from 0.01 to 0.10 Hz with a spectral resolution of 0.01 Hz. (a) Oxy-Hb in the left frontal area. (b) Oxy-Hb in the right frontal area. (c) Deoxy-Hb in the left frontal area. (d) Deoxy-Hb in the right frontal area. There was no significant difference between ASD and TD children at any frequency point. ASD, autism spectrum disorder; TD, typically developing.