The video discusses the use of positron emission tomography (PET) at London's Hammersmith Hospital to track brain activity by monitoring blood flow. It highlights how the left hemisphere of the brain focuses on words, while the right hemisphere processes intonation and vocal characteristics. This technology aids in identifying brain damage and compensatory activity in cases of head injury. The research could lead to new treatments and targeted therapies for conditions like dyslexia.

What new insight or understanding did you gain from this video?