13. The system of claim 12 , wherein the token instances originate from different token sources, and are detected by the user using different sensory pathways; and wherein the token instances comprise representations of elements extracted from digital media content.
13. The system of claim 12 , wherein the token instances originate from different token sources, and are detected by the user using different sensory pathways; and wherein the token instances comprise representations of elements extracted from digital media content. 16. The system of claim 13 , further comprising a target value generator configured to predict the affective response annotations from values of a user measurement channel of the user.