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Heller, Aaron S., Tom Johnstone, Alexander J. Shackman, Sharee N. Light, Michael J. Peterson, Gregory G. Kolden, Ned H. Kalin, and Richard J. Davidson. Reduced Capacity to Sustain Positive Emotion in Major Depression Reflects Diminished Maintenance of Fronto-striatal Brain Activation. National Academy of Sciences, 2009.

Heller, Aaron S., et al. Reduced Capacity to Sustain Positive Emotion in Major Depression Reflects Diminished Maintenance of Fronto-striatal Brain Activation. National Academy of Sciences, 2009.