Experimental paradigm.

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NA-MIC National Alliance for Medical Image Computing Mental Illness and Neuroscience Discovery (MIND) Consortium Data Randy L. Gollub,

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Presentation transcript:

Experimental paradigm. Experimental paradigm. After identifying the threshold, thermal stimulation was performed before (Th1), during (Th2), and after infusion (Th3 and Th4). Punctate stimulation (P) was performed after every thermal stimulation block and is indicated in green. Functional scans were performed during thermal and punctate noxious stimulation blocks. Mood was assessed before commencing the infusion (M1), twice during the infusion (M2a and M2b), and twice during the postinfusion period (M3a and M3b). M3b was performed after Th4 before removing the subject from the scanner. The gray underlay shows the modeled effect site concentration of remifentanil. The duration of the infusion was 40 min. Vishvarani Wanigasekera et al. J. Neurosci. 2011;31:2835-2842 ©2011 by Society for Neuroscience