[Nevermark]

I think you mean 0D for individual receptors.

Point (I.e. single point/element) receptors, that encode a single magnitude of perception, each.

The cochlea could be thought of 1D. Magnitude (audio volume) measured across 1D = N frequencies. So a 1D vector.

Vision and (locally) touch/pressure/heat maps would be 2D, together.

[AIPedant]

No, the sensors measure a continuum of force or displacement along a line or rotational axis, 1D is correct.

[Nevermark]

That would be a different use of dimension.

The measurement of any one of those is a 0 dimensional tensor, a single number.

But then you are right, what. is being measured by that one sensor is 1 dimensional.

But all single sensors measure across a 1 dimensional variable. Whether it’s linear pressure, rotation, light intensity, audio volume at 1 frequency, etc.