Abstract concepts

How do we use and represent in the brain abstract concepts, as "freedom" and "fantasy"? How do we acquire them? How can an embodied and grounded cognition approach explain them?

I'm interested in investigating this problem. Our idea is that, since abstract concepts do not refer to single and concrete objects, for their acquisition the social and linguistic input is more important than for acquiring concrete concepts, as"cup". Linguistic networks should be more activated in the brain for abstract than for concrete concepts, and abstract concepts should be more influenced by linguistic variability than concrete ones. This activation of linguistic network should have an embodied counterpart, the activation of the mouth during conceptual processing. A special case is represented by concepts of numbers and emotions.

Papers on abstract concepts (since 2004) (including numbers and emotions)