Factors determining the spectral peak magnitude.

<p>(A) Effect of the rate modulation (<i>m</i>) in different base firing rates (<i>r</i>₀) over a fixed recording period (<i>T</i> = 1 minute). The solid lines indicate the mean SNRs; the shaded areas indicate ±1 STD of the SNR. (B) A squared fitting function for the SNR slopes (R² = 1, p <0.001). (C) Effect of the recording period duration <i>(T)</i> in different firing rates during a fixed firing modulation (<i>m</i> = 0.25). (D) A square root fitting function for the SNR slopes (R² = 0.99). (E-F) The detection of a significant peak (SNR>5) is affected by the rates for different (E) rate modulations and (F) recording durations.