Interleukin-6 Covaries Inversely With Cognitive Performance Among Middle-Aged Community Volunteers
Anna L. Marsland, PhD, RN,
Karen L. Petersen, MS,
Rama Sathanoori, MS,
Matthew F. Muldoon, MD, MPH,
Serina A. Neumann, PhD,
Christopher Ryan, PhD,
Janine D. Flory, PhD and
Stephen B. Manuck, PhD
From the Behavioral Immunology Laboratory (A.L.M., R.S.) and the Behavioral Physiology Laboratory (K.L.P., S.A.N., J.D.F., S.B.M.), Department of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania; the Center for Clinical Pharmacology (M.F.M.) and the Department of Psychiatry (C.R.), University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; and the Department of Psychiatry (J.D.F.), Mount Sinai School of Medicine, New York, New York.

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Figure 1. Mean performance on the Trail Making and Stroop Color-Word Task (with standard error bars) among individuals in the interleukin-6 tertile groups. (Note: Higher scores reflect better performance on the Stroop task and worse performance on Trail Making.)
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Figure 2. Mean performance on a subset of the Wechsler Memory ScaleThird Edition scales assessing auditory and visual attention/working memory (with standard error bars) among individuals in the interleukin-6 tertile groups.
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Copyright © 2006 by the American Psychosomatic Society