> I remember going to some science museum that had a thing you could touch that could be either warm or cool or quickly switching between them, and that last se

> I remember going to some science museum that had a thing you could touch that could be either warm or cool or quickly switching between them, and that last setting felt surprisingly hot. Is that a similar effect? What you're describing is a variation of the thermal grill illusion -- in short, activating both heat and cold sensory receptors at the same time is perceived as extreme heat. As far as I'm aware, this phenomenon is specific to the temperature sense, and it has nothing to do with "resonance". https://en.wikipedia.org/wiki/Thermal_grill_illusion https://en.wikipedia.org/wiki/Thermal_grill_illusion