Mapping the brain basis of feelings, emotions and much more: A special issue focused on 'The Human Affectome'.

The Human Affectome Project was launched by the non-profit organization Neuroqualia (www.neuroqualia.org) in 2015 with the seemingly impossible goal: To map a psychological process and form possible definitions and working models for affective states and related emotions. Twelve reviews based on emotions, feelings and motivation were written dedicated to mapping the brain basis of affect. A capstone piece 'The Human Affectome' provides a foundation for the special issue by giving detailed up-to-date definitions for key terms including feeling, affect, emotion and mood. Critically, the piece offers an overall model synthesizing three main features of affect: valence, motivation, and arousal. Affect itself is explored as the main umbrella function capturing all feeling states and related processes. Overall, the project and the special issue has been a highly successful interdisciplinary effort producing a novel approach that can be used to understand, guide and revise contemporary research on the brain basis of feeling and how diverse feeling states interact with each other in typical and atypical fashions.