Wiktionary
unstimulated
a. Not stimulated.
Usage examples of "unstimulated".
From this state of repose, amounting almost to apathy respecting the past, his thoughts were carried forward to the future, which, in spite of all that existed to overcloud the prospect, glittered with such hues as, under much happier auspices, his unstimulated imagination had not been able to produce, even in its most exalted state.
In order for us to see two separate objects actually as two and ijot have them blur together into one object (and this is what is meant by visual acuity), the light from the two objects would have to fall upon two separate photoreceptors with at least one unstimulated photoreceptor in between.