Curiosity

A form of cognitively-induced deprivation that arises from the perception of a gap in knowledge or understanding. Synonymous with interest. Categorized as a knowledge emotion or epistemic emotion. Contrast with boredom and confusion.

Reference:

Loewenstein, G. (1994). The psychology of curiosity: A review and reinterpretation. Psychological Bulletin, 116(1), 75-98. https://psycnet.apa.org/doi/10.1037/0033-2909.116.1.75