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Brains also have supply chain issues – blood flows where it can, and neurons must make do with what they get

  • Written by Suzana Herculano-Houzel, Associate Professor of Psychology, Vanderbilt University
Brains also have supply chain issues – blood flows where it can, and neurons must make do with what they getBlood carries oxygen and vital nutrients to the brain. Mr. Suphachai Praserdumrongchai/iStock via Getty Images

Neuroscientists have long assumed that neurons are greedy, hungry units that demand more energy when they become more active, and the circulatory system complies by providing as much blood as they require to fuel their activity. Indeed,...

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