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Study Links Heart Rate to Visual Perception Errors

3/4/2026

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Story summary
  • A study published in Biological Psychology finds heart rate slows when participants make visual mistakes, signaling a body-brain link in perception.
  • Researchers led by María I. Cobos Martín of the University of Granada show perception is shaped by both brain and body, not by the brain alone.
  • The experiment involved 30 participants identifying the colors of letters.
  • The results imply bodily influence on perception, though causal links require further study.