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. Author manuscript; available in PMC: 2012 May 11.
Published in final edited form as: Eur J Neurosci. 2010 Dec 29;33(2):308–321. doi: 10.1111/j.1460-9568.2010.07531.x

Figure 4.

Figure 4

Low-cost selective neurons in the effort task reflect action-specific reward value. (a) PEHs of a representative low cost selective neuron on forced choice (left panel) and free choice (right panel) trials. Conventions follow from Fig. 3a. Free choice trials involve the presentation of both cues, but were subdivided into trials in which the animal selected the low cost option or the high cost option. On forced choice trials, the cue-evoked increase in activity was smaller when the high cost option was subsequently chosen. (b) Mean (±SEM) activity traces of all low cost selective neurons (from Fig. 3c) on free and forced choice trials. (c) Comparison of activity following cue onset on forced choice and free choice trials. In both cases, activity was greater when the low cost choice was selected than when the high cost choice was selected (p < 0.01 for both comparisons).