SCIENCE

Brain Scanners and Emotions: A New Way to Read Feelings

Tue Jul 15 2025

Ever wondered if machines can understand human emotions?

Scientists have been exploring this idea using a special brain scanner called fNIRS. Unlike the large scanners in hospitals, this one is small and wearable.

The Study

  • Participants: 20 healthy individuals
  • Method: Viewing images that evoked happy, sad, or neutral feelings
  • Technology: fNIRS scanner reading brain signals from the frontal lobe
  • Analysis: Computer programs interpreting brain signals to guess emotions

Results

  • Accuracy: Over 90% in distinguishing between emotions
  • Programs Used: Three different algorithms, all highly successful

Potential Applications

  • Healthcare: Assisting in the treatment of mental health issues
  • Education: Making learning more engaging and interactive
  • Entertainment: Personalizing games and media experiences

Practicality

  • Technology: Not overly complex; doesn't require supercomputers
  • Usability: Suitable for everyday applications

Ethical Considerations

  • Privacy Concerns: Continuous emotion tracking might feel intrusive
  • Accuracy Issues: Potential for misinterpretation of emotions

The future of emotion-reading machines is promising, but it also raises important questions about privacy and accuracy.

questions

    How does the study's reliance on a specific set of emotional states (positive, neutral, negative) limit the broader applicability of the findings?
    What are the potential ethical implications of using fNIRS-based BCIs for detecting emotional states in real-world applications?
    What if the BCI system starts recommending comedy shows based on detecting a neutral emotional state?

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