An international study by Karolinska Institute and Columbia University has discovered a complex neural network in the heart, referred to as a ‘mini brain’, that plays a crucial role in regulating heartbeat. This new understanding challenges existing views on cardiac rhythm control and may lead to innovative therapies for heart diseases, such as arrhythmias. The research, conducted on zebrafish which share similarities in heart function with humans, emphasizes the heart’s intricate neural connections and their impact on health, paving the way for new therapeutic targets.

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