Numeron

Of course, it is also possible that Sheba's mental representations of 1, 2, 3, and 4 may have been symbolic, accumulator representations or numeron representations.

Source: wiktionary

Specifically, and in direct contrast to the numeron model, the idea of an accumulator is that the brain converts numerical events into an analogue representation.

Source: wiktionary

We suggest that for small numerosities, the preverbal counter can run much faster than the verbal counting routine, so that the magnitude (the preverbal numeron) that represents the numerosity of an array is specified long before the verbal counting process has arrived at the correct numerlog. It is specified so much sooner that one can get the correct numerlog more quickly by using the preverbal counting mechanism (subitizing) to get the preverbal numeron and use the preverbal numeron to retrieve the numerlog.

Source: wiktionary

The one–one principle: Each item in the set is assigned one and only one numeron.

Source: wiktionary