Perception Can Change in a Single Heartbeat

In tense situations, everything can change between beats of the heart.

And, it’s more than just the situation that changes — our own reaction to a potentially dangerous encounter can hang on something as simple as the contraction of our heart. In a small study, researchers from the United Kingdom looked at how participant’s perception of a threat changed with the beating of their hearts. The found that people were more likely to exhibit a reaction based on fear when their hearts were pump

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