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Understanding Face Recognition in the Brain: Insights from Electrophysiological, Imaging, and Behavioral Studies

This study explores how the brain represents faces through electrophysiological, imaging, and behavioral investigations. It reviews findings on face-selective neurons in the temporal cortex, neural encoding of face identity and expressions, global and fine categories of face perception in humans and monkeys, and latency coding in face neurons. Imaging studies reveal clustered face neurons in the ventral visual pathway, while behavioral studies delve into face inversion effects, laterality in perceiving facial expressions, prosopagnosia, and adaptations in face perception. This comprehensive analysis sheds light on the intricate mechanisms of face recognition at the neural level.

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Understanding Face Recognition in the Brain: Insights from Electrophysiological, Imaging, and Behavioral Studies

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  1. Face Recognition in the Brain Arash Afraz

  2. How Does the Brain Represent FACE???

  3. Electrophysiological Studies • Imaging Studies • Behavioral Studies

  4. Electro -physiological Studies:

  5. Face selective neurons in the temporal cortex of monkey were reported in 1972.

  6. TE  Face Identity • STS  Facial Expression

  7. Neural Encoding!?!?

  8. Global Categories: Monkey, Human & Shape. • Fine Categories: Monkey Identity (F1), Monkey Expression (F2), Human Identity (F3) & Human Expression (F4)

  9. I See a face – a happy face!

  10. Latency Coding in Face neurons?

  11. Imaging Studies:

  12. Fusiform Face Area Imaging studies (Nancy Kanwisher).

  13. Face neurons are clustered in ventral visual pathway in few patches (say 5 or 6) • Amount and distribution of face selective patches are similar in humans and monkeys

  14. Optical Imaging investigations convey the same results.

  15. Behavioral Studies:

  16. Face Inversion Effects

  17. Face Inversion Effects

  18. Face Inversion Effects

  19. Face Inversion Effects

  20. Laterality in Perceiving Facial Expression

  21. Prosopagnosia

  22. Adaptation and After-effects in Face Perception!?

  23. Simple Adaptations

  24. What about high level visual stimuli like faces?

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