Table 3 Dependence of High Gamma Phasic Response on 1/f slope.

From: Aperiodic spectral slope tracks the effects of brain state on saliency responses in the human auditory cortex

Model

Model coefficients

Fixed effect

Estimate

Adj. P-value

High Gamma by Aperiodic Slope

HG ~ (S + I(S^2))*Condition + (1|Sub/Electrode)

(Intercept)

17.65

0.024*

Slope

− 8.79

p < 0.0001***

Slope^2

− 0.78

p < 0.0001***

Condition

71.46

 < p < 0.0001***

Slope*Condition

14.67

p < 0.0001***

Slope^2*Condition

1.21

0.0061**

High Gamma by Delta Power Fraction

HG ~ (D + I(D^2))*Condition + (1|Sub/Electrode)

(Intercept)

38.74

p < 0.0001***

Delta

10.79

0.50

Delta^2

− 28.32

0.42

Condition

32.22

 < p < 0.0001***

Delta*Condition

28.94

0.41

Delta^2*Condition

− 64.28

0.40

  1. Statistical significance (after correction for multiple comparisons): *P < 0.05, **P < 0.01, ***P < 0.001. Critical P-values after FDR correction for multiple comparisons (Benjamini-Hochberg) are shown for all models. Asterisks have been removed if no longer significant after correction. Estimates reflect the modeled differences between factors within each fixed effect: HG = High Gamma Response Amplitude (% Change), C = Condition (Oddball – Standard), D = Delta Power Fraction in pre-stimulus window (-250–0 ms), S = Aperiodic 1/f slope estimate in pre-stimulus window (-250–0 ms), Sub = subject identifier, Electrode = electrode within the pSTG.
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