Fig. 2: The neural ensemble of bimodal value neurons in the putamen represents both modality and value information.

A Illustration of two hypotheses of the way bimodal value neurons process both modality and value information. B Decoding performance plotted as a function of time for each variable in bimodal value neurons: modality, value, and the interaction between modality and value. Horizontal bars represent periods of decoding accuracy above the permutation results (right-tailed z-test, p < 0.05). C Confusion matrix for four different conditions. Each graph has a different class variable and shows the responses of the decoder. T tactile, V Visual. D An example of neural trajectories of bimodal value neurons (Monkey EV) in the subspace projected to the first three principal components (PCs). The circle and triangle denote the start (−200 ms from the stimulus onset) and end points (1000 ms from the stimulus onset) of the neural trajectories, respectively. Yellow and dark circles indicate the stimulus-on and delay-on points, respectively.