Comparison of two EEC asymmetry indices in depressed patients vs. normal controls

In 11 non-depressed, age-matched controls, and in 13 depressed patients, we compared the frontal alpha asymmetry mean for a baseline session with the percentage of the time in the session when the asymmetry score > 0. It was found that the percent index was a better discriminator of the two groups than was the asymmetry score. (C) 1998 Elsevier Science B.V. All rights reserved.