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. Author manuscript; available in PMC: 2010 Sep 24.
Published in final edited form as: Neuron. 2009 Sep 24;63(6):733–745. doi: 10.1016/j.neuron.2009.09.003

Figure 2.

Figure 2

An example orbitofrontal neuron that encodes offer value, in a menu-invariant and therefore transitive manner. (a) In red is the firing rate of the neuron (± s.e.m.), as a function of the magnitude of the two juices offered, for three different choice pairs. In black is the percentage of time the monkey chose the first offer. (b) Replots firing rates as a function of the offer value of juice C, demonstrating that this neuron encodes this value in a common currency in a manner that is independent of the other reward offered. The different symbols and colors refer to data from the three different juice pairs, and each symbol represents one trial type. Reprinted with permission from Padoa-Schioppa and Assad (2008).