Science & ClimateScienceDaily•1 min read•11/4/2026 (2h ago)

Scientists may have finally explained why our brains and bodies are cross-wired

Scientists may have finally explained why our brains and bodies are cross-wired
60-Word AI Digest

Scientists propose that the brain’s mysterious cross-wiring, which connects each hemisphere to the opposite side of the body, may have originated more than 500 million years ago in the visual systems of ancient fish. Rather than evolving for a specific advantage, this unusual arrangement may simply be a legacy of evolution building new brain circuits on...

Key Takeaways

  • Scientists propose that the brain’s mysterious cross-wiring, which connects each hemisphere to the opposite side of the body, may have originated more than 500 million years ago in the visual systems of ancient fish.
  • Rather than evolving for a specific advantage, this unusual arrangement may simply be a legacy of evolution building new brain circuits on an ancient foundation.
  • Full details and original dispatch available below.

Scientists propose that the brain’s mysterious cross-wiring, which connects each hemisphere to the opposite side of the body, may have originated more than 500 million years ago in the visual systems of ancient fish. Rather than evolving for a specific advantage, this unusual arrangement may simply be a legacy of evolution building new brain circuits on an ancient foundation.

Original Publisher Attribution

This summary was curated from ScienceDaily.

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Scientists may have finally explained why our brains and bodies are cross-wired — Loop60