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Pupil Size as an Indicator of Brain Activity

Video   Jan 19, 2018 | Video by the University of Geneva

 

Scientists at the University of Geneva have performed a study in asleep mice that reveals pupil diameter changes during sleep. They say this mechanism protects the brain during deep sleep and that measuring pupil size during sleep could be a less invasive readout of brain activity.


Reference:

Yüzgeç, Ö., Prsa, M., Zimmermann, R., & Huber, D. (2018). Pupil Size Coupling to Cortical States Protects the Stability of Deep Sleep via Parasympathetic Modulation. Current Biology. doi:10.1016/j.cub.2017.12.049 

 
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