Recent research in neuroscience has resulted in a what is claimed as a more precise definition of 'emotion', as distinct from 'feeling'. Neuroscientists Hanna and Antonio Damasio have written that 'Emotions play out in the theatre of the body'. By contrast, 'Feelings play out in the theatre of the mind' (Damasio, 2003). First emotions are coming up, and than they can effect feelings. Emotions are visible and measurable, and feelings are hidden, like mental images necessary are, unseen to anyone other than their rightful owner, the most privateproperty of the organism in whose brain they occur. Emotions can be visible in facial expressions, in body language, and can be heard in the voice. (K. Blase and M. McKergow, Meanings affect the heart - SF questions and heart coherence)

Emotions produce feelings in the brain. Heart signals (which accompany different emotional states) have a significant effect on brain function.

In relation to the connection between heart and brain (emotions and feelings), this work explores three main areas of investigations:
1. emotions that we all experience directly affect our heart rhythm patterns
2. not only our heart rhythm patterns respond to the brain, but the brain also continuously responds to the heart
3. our heartbeat influence others (cardiac energy exchange, electricity of touch)

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