Core affect

Core affect is a neurophysiological state that is consciously accessible as a simple, nonreflective feeling that is an integral blend of hedonic (pleasure–displeasure) and arousal (sleepy–activated) values.


References:

Barrett, L. F., & Bliss-Moreau, E. (2009). Affect as a Psychological Primitive. Advances in experimental social psychology, 41, 167–218. https://doi.org/10.1016/S0065-2601(08)00404-8

Kuppens, P., Champagne, D., & Tuerlinckx, F. (2012). The dynamic interplay between appraisal and core affect in daily life. Frontiers in Psychology, 3, 1–8. https://doi.org/10.3389/fpsyg.2012.00380

Russell, J. A. (2003). Core Affect and the Psychological Construction of Emotion. Psychological Review, 110, 145–172. https://doi.org/10.1037/0033-295X.110.1.145