The passage was from Range-adapting representation of economic value in the orbitofrontal cortex. You might also be interested in The orbitofrontal cortex and beyond: from affect to decision-making (Rolls, Grabenhorst 2008), which presents a high level summary of research on the topic, with dozens of citations of consistent and continuous stimulus representations in OFC for a few species and and primary reinforcers.
The passage was from Range-adapting representation of economic value in the orbitofrontal cortex. You might also be interested in The orbitofrontal cortex and beyond: from affect to decision-making (Rolls, Grabenhorst 2008), which presents a high level summary of research on the topic, with dozens of citations of consistent and continuous stimulus representations in OFC for a few species and and primary reinforcers.