Abstract: Curiosity has a long history of research and rich definitions and classifications as a common mental state and personality trait. The division and coordination of multiple brain regions enable individuals to form a cognitive process of generating and evaluating prediction error, triggering and mediating curiosity, and producing surprise and new prediction error, so as to reduce the prediction error and information gap between internal states and external environment, and eliminate uncertainty. Curiosity has a significant role in improving cognitive function and maintaining mental and physical health during development. Future research can be further considered from a cross-species, interdisciplinary, and multi-domain perspective to promote the deepening of research topics, the development of research methods, and the application of research results in curiosity.

Key words: curiosity, exploratory behavior, information seeking, prediction error, information gap, mental health