Human temperature perception is not simply a thermometer reading, but a complex symphony orchestrated by nerve endings, signal transmission, and brain decoding. Our skin contains different receptors sensitive to cold and heat stimuli. When these receptors are activated simultaneously or sequentially, the signals undergo integration and interference during transmission to the central nervous system, sometimes even producing subjective perceptions that contradict the actual physical temperature, such as "hot/cold illusions." Understanding this phenomenon is the starting point for exploring the subtle gap between perception and reality. Our interactive exhibit, "Knowing Cold and Heat," uses a special metal tube (1200*650*1050mm) integrated with a precise temperature control system to translate this neuroscience principle into a direct sensory experiment. When you touch either end of the tube, you can clearly experience the preset sensations of cold and heat. However, when you try to touc
