It should be noted that no ground rumbling, strong seismic motion, or strong smell of sulfide was perceived before the eruption.
As a matter of fact, this flexibility had already been perceived before Elton by the father of ecology, Charles Robert Darwin, who, in the Origin of Species (1859) wrote: "Throw up a handful of feathers, and all must fall to the ground according to definite laws.
"They can make all the arguments they want about it, but they are perceived differently than they were perceived before March 2. Our perception remains the same".
This is known as top-down processing, where the whole element is perceived before individual characteristics.
In contrast, for decisions on stress information, the second syllable of the second item had to be perceived before a confident judgement was possible.
Additionally, abstract concepts, unlike concrete concepts, in which an object is perceived before being assigned a label, require a label to subsume the contextual constraints associated with the concept.
BBC Radio Nottingham's Dave Bracegirdle: "If Notts hadn't been perceived as title contenders before, then surely they must now be a force to be reckoned with.
The changes aren't monumental, but they turn the board into a complete product, whereas before it might have been perceived as a $1,500 toy.
And so the battle over the wider meaning of the attack and how it would be perceived around the world began well before the firefight ended on Wednesday, when the last militant was killed.
Obama, like Bill Clinton and other Democrats before him, took what was perceived to be the politically safe route, softening the blow to gay-rights activists by promising to eliminate Don't Ask, Don't Tell in the military, and then delivering on that promise.
