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The dynamic effect of active or passive scratching an itch were analyzed in direct contrast to the itch condition.

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posted on 06.12.2013 by Alexandru D. P. Papoiu, Leigh A. Nattkemper, Kristen M. Sanders, Robert A. Kraft, Yiong-Huak Chan, Robert C. Coghill, Gil Yosipovitch

Actively scratching an itch (blue) deactivated the ACC, the ventromedial prefrontal Cortex, midbrain (VTA), while the effect of passive scratching was found only in the ACC (green). Standard Talairach space coordinates (x, y, z). The color tones displayed correspond to Z score values as depicted in the color bars (at the same scale). R = Right; L = Left.

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