I'm writing a short essay on emotions and I stumbled upon a few references of confusion being an emotion but no solid exclusive research results focusing on confusion as an emotion. If it isn't, what classification would it fit?
Few references: https://www.pnas.org/content/pnas/114/38/E7900.full.pdf (page E7901) which simply explains about 27 types of emotions mostly deduced from physical observations rather than neurological
And this paper, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5620019/, also explains what happens neurologically when a person is confused though it's focused more on the advancement of Machine Learning: Neural Networks than pure neuroscience. This is from another unanswered question https://biology.stackexchange.com/questions/67440/neuroscience-of-confusion