The nature of feelings: evolutionary and neurobiological origins

@article{Damasio2013TheNO,
  title={The nature of feelings: evolutionary and neurobiological origins},
  author={Antonio R. Damasio and Gil B. Carvalho},
  journal={Nature Reviews Neuroscience},
  year={2013},
  volume={14},
  pages={143-152}
}
Feelings are mental experiences of body states. They signify physiological need (for example, hunger), tissue injury (for example, pain), optimal function (for example, well-being), threats to the organism (for example, fear or anger) or specific social interactions (for example, compassion, gratitude or love). Feelings constitute a crucial component of the mechanisms of life regulation, from simple to complex. Their neural substrates can be found at all levels of the nervous system, from… 
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