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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: J Forensic Sci. 2008 Nov 29;54(1):220–231. doi: 10.1111/j.1556-4029.2008.00927.x

FIG. 3.

FIG. 3

ROC curves for fMRI detection of deception. Plots of sensitivity and specificity were used to generate curves representing the number of significantly activated voxels at a t-value greater than or equal to 1.645 in clusters 1, 2 and 4 (Kozel et al. 2005) on the task [(disk – neutral) – (envelope – neutral)] for the Complete, Quality and Validated groups. The straight line represents a diagnostic test that is no better than chance and the jagged line represents the trade-off between sensitivity and specificity amongst each group.