There's a term for it but I can't easily find it. https://neurosciencenews.com/neuron-counting-9898/ https://neurosciencenews.com/neuron-counting-9898/ This a

There's a term for it but I can't easily find it. https://neurosciencenews.com/neuron-counting-9898/ https://neurosciencenews.com/neuron-counting-9898/ This article goes into it and mentions "numerical distance effect", which looks appropriate but not what I remember. I did learn that people who play first person shooters can usually recognize more objects at once instantly; 6 or 7 instead of a more typical 4 or 5, if I recall correctly. They used number of grapes in a hand to measure.