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EURASIP Journal on Advances in Signal Processing

Table 1 Significance levels of bicoherence

From: Time-varying bispectral analysis of visually evoked multi-channel EEG

Number of epochs

b 95 2

10

0.3

20

0.15

100

0.03

  1. The expected value of bicoherence at any bifrequency (f1,f2) is 0 if the harmonic components are random-phase. This also holds for a Gaussian random process. However, when a finite number, N, of epochs is used in estimation, bicoherence values will be non-zero. 95% of the values will lie below b 95 2 .
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