The brain automatically preserves memories for important events and filters out other, less relevant information

The brain’s ability to preserve memories lies at the heart of our basic human experience. But how does the brain’s mechanism for memory make sure we remember the most significant events and not clog our minds with superfluous details?
According to a new study by Columbia University researchers, the brain plays back and prioritizes high-reward events for later retrieval and filters out the neutral, inconsequential events, retaining memories that will be useful to future decisions.
Published today in the journal Nature Communications, the findings offer new insights into the mechanisms of both memory and decision making.

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