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Probably the best way to answer this question is with a counterexample to humans: the nematode worm C. elegans has 302 neurons. Every individual has exactly that number, and each is found in the same place with the same function in every individual. This is one of the things that makes C. elegans an attractive model organism for study. Humans definitely do ...


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The hippocampus is thought to respond to information that is being maintained in working memory in other areas. Areas that are commonly thought to maintain working memory include prefrontal cortex (reviews: Chai et al 2018 https://doi.org/10.3389/fpsyg.2018.00401) and entorhinal cortex (Fransen 2005; Egorov et al. 2002). For example, some information about ...


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The term for the brain activity that corresponds to an experience is "neural representation". Neural representations "drift" over time. From https://elifesciences.org/articles/51121: Similar ‘representational drift’ has been shown in other neocortical areas and hippocampus (Attardo et al., 2015; Ziv et al., 2013; Levy et al., 2019). So ...


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If you want the function of the prefrontal cortex boiled down to a single coarse approximation, the answer is executive function. That notion of more structured and symbolic cognition encompasses pretty much all of the others on your laundry list. As with other complex and multifunctional organs in the body, reducing the prefrontal cortex in this manner is ...


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The human eye is thought to react about 1/24 of a second, but I'm not sure how fast it is when it touches an eyelash


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