Performance of the ROI SVM Classifiers.

Using the activity from six regions of interest (ROIs), SVMs were used to distinguish the painful stimuli from the nonpainful stimuli. For each ROI, this table displays the SVM's average accuracy, and positive and negative predictive value (PV) when tested on participants in the testing group (N = 8). Error is reported as 1 standard deviation. An asterisk indicates performance measures that are significantly greater than chance (p05). Anterior cingulate cortex (ACC). Primary somatosensory cortex (S1). Secondary somatosensory cortex (S2). Prefrontal cortex (PFC).