[1] Kosslyn S M. The role of area 17 in visual imagery: convergent evidence from PET and rTMS [J]. Etal Science,1999, 284:5411

[2] Roland P E et al. Visual imagery and visual representation [J]. TINS, 1994, 17:281-287

[3] Functional magnetic resonance imaging of the brain [J]. Annals of Internal Medicine, 1995, 122:296-302

[5] Irene Tracey et al. Dissociating pain from its anticipation in the human brain [J]. Alexandex Ploghaus, Science,1999, 284(5422)

[6] Kosslyn M. Topographical representations of mental images in primary visual cortex stephen [J]. Nature, 1995,378:496-498

[7] Craig A D, Reiman E M et al. Functional imaging of an illusion of pain [J]. Nature. 1996, 384:358-340

[8] Pierre Rainville et al. Pain affect encoded in human anterior cingulate but not somatosensory Cortex [J]. Science,1997, 277:968-971

[9] Functional MRI study of thalamic and cortical activations evoked by cutaneous heat, Cold, and tactile stimuli.