Why does the brain constantly modify itself?

Researchers from the University of Cambridge, Columbia University, and New York University conducted a study in which volunteers were tasked with making rapid judgments about the direction of flashing dots on a computer screen. Participants can indicate their confidence in the decision by rotating a handle. Surprisingly, volunteers sometimes changed their preferences midway. The study revealed evidence that suggests a bottom-up approach to changing one’s mind — even when the points were not visible, participants continued to accumulate information, leading to decisions and Confidence levels affected.

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