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. 2014 Feb 21;6(1):4. doi: 10.1186/1866-1955-6-4

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Copyright © 2014 Ribeiro et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Frequency domain analyses of the electroencephalographic (EEG) responses elicited by red-green stimulation revealed significantly higher amplitude of alpha oscillations in the responses of children and adolescents with neurofibromatosis type 1 (NF1) compared with control levels. (A) Grand average amplitude spectra of the EEG responses non-phase-locked (left) and phase-locked (right) with the visual stimulation. (B) Control and NF1 average amplitude of each frequency band (delta, theta, alpha, beta, low gamma and high gamma) non-phase-locked (left) and phase-locked (right) with the visual stimulation. (C) Contrast response functions of control and NF1 mean amplitude of non-phase-locked (left) and phase-locked (right) alpha oscillations. All data are represented as mean ± 1 standard error of the mean. *P <0.05; **P <0.01; #P = 0.07.