The researchers used fine microscopic reconstruction to determine whether the neural connections of regions associated with color vision were preserved in these three species, although each followed its own independent evolutionary path.

Comparing the neural connections of color-conducting nerve cells in the retinas of humans, Old World macaques, and New World monkeys, the researchers found that a particular shortwave or blue cone sensing circuit found in humans is not found in marmosets and differs from others. circuit seen in macaques.

Comparative studies of neural circuits can also help answer many other questions about how evolution has changed the nervous system of humans and their immediate families.

Source: Ferra

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