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. Author manuscript; available in PMC: 2012 Jun 12.
Published in final edited form as: Brain Res Rev. 2006 Oct 6;53(2):271–286. doi: 10.1016/j.brainresrev.2006.09.002

Fig. 2.

Fig. 2

Top: The distribution of correlations between activity of single-units evoked by oral stimuli and behavioral acceptance ratings of these stimuli by macaque monkeys for three neural substrates. The distribution of OFC neurons, in contrast to that of neurons from AI/FO and Ag, appears bimodal, suggesting a stronger relation between hedonic evaluation of oral stimuli and the neural activity they evoke in OFC than in AI/FO and Ag (see text for details). Bottom: The distribution of the significance levels of these correlations was different between OFC on one hand and AI/FO and Ag on the other hand. Whereas only a small fraction of AI/FO and Ag neurons showed a significant (p<0.05) correlation between acceptability ratings and neural responses (12.1 and 11.4%, respectively), correlations of nearly half (39.6%) of the OFC neurons were significant.