Discriminative cognitive-evaluative or loss of the dimension of pain. Ablation of the medial thalamus, primary somatosensory cortex, sensory lateral thalamus, anterior cingulate cortex, affective-motivational medial temporal lobe, sensory-discriminative hippocampus, parietal lobe, affective-motivational uncus, insula, lateral thalamus, primary somatosensory cortex, sensory-medial thalamus, anterior cingulate cortex, affective-motivational dimension of pain. Ablation of the results in a selective loss of the dimension of pain.