Fig. 4.

Tuning for choice side. A: raster plot and average responses of an example vmPFC neuron to task events, separated by leftward and rightward choice trials. This neuron showed significantly greater responses on trials with contralateral saccades than on those with ipsilateral saccades. B: plot of proportion of vmPFC neurons that show a significant difference in responses to the side of the chosen offer (500-ms sliding boxcar). C: raster plot and average responses of an example VS neuron to task events, separated by leftward and rightward choice trials. This neuron showed significantly greater responses on trials with ipsilateral saccades than on those with contralateral saccades. D: plot of proportion of VS neurons that show a significant difference in responses to the side of the chosen offer (500-ms sliding boxcar). E: raster plot and average responses of an example OFC neuron to task events, separated by leftward and rightward choice trials. This neuron showed significantly greater responses on trials with ipsilateral saccades than on those with contralateral saccades. F: plot of proportion of OFC neurons that show a significant difference in responses to the side of the chosen offer (500-ms sliding boxcar). G: raster plot and average responses of an example dACC neuron to task events, separated by leftward and rightward choice trials. This neuron showed significantly greater responses on trials with contralateral saccades than on those with ipsilateral saccades. H: plot of proportion of dACC neurons that show a significant difference in responses to the side of the chosen offer (500-ms sliding boxcar). I: raster plot and average responses of an example sgACC neuron to task events, separated by leftward and rightward choice trials. This neuron showed significantly greater responses on trials with contralateral saccades than those with ipsilateral saccades. J: plot of proportion of sgACC neurons that show a significant difference in responses to the side of the chosen offer (500-ms sliding boxcar).