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. Author manuscript; available in PMC: 2015 Oct 18.
Published in final edited form as: Biol Psychol. 2014 Mar 24;99:198–208. doi: 10.1016/j.biopsycho.2014.03.003

Figure 1.

Figure 1

Topographical distributions of 8–12 Hz band average alpha power (top) and 9.5 Hz peak alpha power (bottom) for depressed (left) and healthy (right) participants, showing a top view stretched across all recording sites, along with two 3D-rotated views to display frontal laterality. Depressed participants assessed at pretreatment show a more diffuse anterior-to-posterior pattern of alpha activation (note contour lines) unlike healthy participants who retain focused right frontal activity. Both groups have a peak frequency at 9.5 Hz, at which the noted contrast is particularly evident. Contour lines are spaced at intervals of 5 μV2/Hz.