Figure 4 From: The neurochemical basis of human cortical auditory processing: combining proton magnetic resonance spectroscopy and magnetoencephalography N1m amplitude as a function of choline. Linear regression plot of the amplitude of the first N1m vs. choline-containing compounds (Cho) (R 2 = 0.287, F(1,13), p = 0.040). The 95% confidence intervals are represented by dashed lines. The insert shows the normal probability plot of the residuals, indicating that the errors are normally distributed. IU, institutional unit.Back to article page