The researchers also had these same people experience physical pain during the brain scans - by hooking up a device to their left forearm that delivered a painful (but tolerable) feeling of heat.
与此同时,研究者在他们的前臂连接一个带电装置,这样可以感到微微发热(可以忍受)的疼痛感。
3
Heat can be delivered by convection, radiation, and thermal conduction.