Figure 2.

MUA Tuning and Behavioral Shifts due to Microstimulation for Two Example Sites

(A and B) At the first example site (ica203), MUA activity is selective for (A) rightward motion and (B) near disparity.

(C) Electrical microstimulation at this site causes the appearance of CCW cylinder rotation. The horizontal shift in the psychometric function due to electrical microstimulation is equivalent to addition of 0.015° of binocular disparity to the cylinder stimulus.

(D and E) In the same monkey, another site (ica208) is again selective for (D) rightward motion, but this time also for (E) far disparity.

(F) Electrical stimulation of this site resulted again in more choices in the direction predicted by neuronal selectivity: more choices CW over a wide range of cylinder disparities. The signal is equivalent to a shift of 0.002°.

Error bars depict the SEM. See also Figure S1 and, for another two examples from the second monkey, Figure S2.