Hapticity

One:

The Dutch and German study, published in Nature, found that stimulating just one rat neuron could deliver the sensation of touch.

“The generally accepted model was that networks or arrays make decisions and that the influence of a single neuron is smaller, but this work and other recent studies support a more important role for the individual neuron.

“These studies drive down the level at which relevant computation is happening in the brain.”

I think it also supports the idea (discussed in detail in my thesis) that the word “touch” serves as a baseline indicator for subjective experience.