Your brain finds it easy to size up four objects but not five — here’s why
www.nature.com
Neuron activity shows that the brain uses different systems for counting up to four, and for five or more.
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The original was posted on /r/science by /u/giuliomagnifico on 2023-10-09 13:06:28.

Original Title: New study reveals why our brain finds it easy to size up four objects but not five: we use two types of neurons specialized in counting numbers of four or less and another specialized in five through nine