Before revision: The main concepts of the hypothesis is that the monoamine neurotransmitters are ortogonal in essence, and the proposed one-to-one relationship between the monoamine neurotransmitters and emotions.
After revision: The main concepts of the hypothesis is that the monoamine neurotransmitters are orthogonal in essence, and the proposed one-to-one relationship between the monoamine neurotransmitters and emotions.