Before revision: Lövheim classify emotions according to Silvan Tomkins, and order the basic emotions in a three-dimensional coordinate system where the level of the monoamine neurotransmitters form ortogonal axes.
After revision: Lövheim classifies emotions according to Silvan Tomkins, and orders the basic emotions in a three-dimensional coordinate system where the level of the monoamine neurotransmitters form orthogonal axes.