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. 2013 Feb 5;11(2):e1001477. doi: 10.1371/journal.pbio.1001477

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© 2013 Ray 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) Average time-frequency power spectrum of 96 sites for the P₁₀₀N₀ condition. The sharp horizontal lines at 60 and 75 Hz reflect the increase in power due to the line noise and monitor refresh rate, respectively. (B) Left panel shows the average power spectrum (as a function of frequency) during the P₁₀₀N₀ stimulus condition, computed by averaging the time-frequency power shown in Figure 2A between 50 and 250 ms (red trace). Spectrum for the P₀N₀ condition (orange) and the prestimulus baseline condition (black) are also shown for comparison. The inset shows the red trace at 2× magnification to highlight the narrow peak due to the monitor refresh rate.