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TagParamecium

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model biological micro organism paramecium caudatum 3d illustration

Scientists Try To Understand How One-Celled Life Forms Learn

Artificial intelligence may offer a model for learning without a brain

According to a recent article in The Scientist, in the mid-twentieth century, several labs produced results that suggested that one-celled organisms could learn, in the sense that they could alter future behavior based on past experience. At the time, such findings were dismissed as flukes or mistakes because it was unclear how a unicellular life form like paramecium, with no brain or nervous system, could store memories. Today, a team from Harvard, Rutgers, and MIT is taking a second look at the findings of learning in paramecium: We exhume the experiments of Beatrice Gelber on Pavlovian conditioning in the ciliate Paramecium aurelia, and suggest that criticisms of her findings can now be reinterpreted. Gelber was a remarkable scientist whose absence…