Table 1.

Baselining methods used in time-frequency analysis. A can be read as “active” and stands for the time-frequency resolved magnitude or power in the period of interest. B stands for the baseline period. An overscore indicates taking the mean over the time in the baseline; the standard-deviation σ is also computed over the time in the baseline.

Absolute baseline	Z-scoring baseline	Relative baseline	Log-transform baseline	Absolute-relative baseline	Normed baseline
$A - \underset{\_}{B}$	$\frac{(A-\underset{\_}{B)}}{\sigma B_{}}$	$\frac{A}{\underset{\_}{B}}$	$10\cdot log10\left(\frac{A}{\underset{\_}{B}}\right)$	$\frac{A-\underset{\_}{B}}{\underset{\_}{B}}$	$\frac{A-\underset{\_}{B}}{A+\underset{\_}{B}}$