Our right-handedness comes from fish. Free Technical Library News

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We have right-handedness from fish

05.02.2007

The Italian neurologist Giorgio Vaplortigara came up with a paradoxical idea. Studying the manifestations of asymmetrical behavior in the animal kingdom, he came to the conclusion that our preference for the right hand goes back to fish.

Many schooling species of small fish, when attacked by a predator, behave like a single organism, maneuvering "all of a sudden". At the same time, some species prefer to dodge to the left, others to the right.

The scientist believes that such asymmetry of behavior, having appeared for the first time in fish, reached primates (75% of chimpanzees prefer to pick at the termite mound with their left hand), and then to humans.

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