Functional near-infrared spectroscopy (fNIRS) measures brain activity optically based on changes in cortical blood flow.

Aug. 21, 2026 Scientists watched a light-triggered hidden state form inside a material in only 30 femtoseconds, revealing a step that had never been seen before. The material first entered a fleeting ...

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Clint Proctor is a managing editor with the credit cards and travel rewards team at Forbes Advisor. He has eight years of experience in personal finance journalism and has contributed to a variety of ...