[Tig] banding - optical illusion?

[Rob Lingelbach]

Mach bands.  They're not a category of suborbital rock, rather, an
optical illusion first demostrated by Ernst Mach.

http://en.wikipedia.org/wiki/Mach_bands

Could this effect, lateral inhibition of receptors, be at all  
responsible
for banding in gradients in displays, such as in the recent thread on
Mac notebooks?

--
Rob Lingelbach
rob at colorist.org   http://www.colorist.org