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and overcompensation in orientation tuning. These results show that this is not supported by the simple models we discussed in class and there is a spatial interaction between the center and the surround.Though all the orientations looked vertical to me, what I actually graphed was nota vertical adjustment of 0. If the generated surround was tilted to the right, there was a bias to tilt the center to the right in order for it to be perceived as vertical. And if the generated surround was tilted to the left, there was a bias to tilt the center to the left for compensations and for the center to be perceived as vertical. This supports the idea that the perceived orientation is not just dependent on the immediate cells around it, but as well on the cells surrounding it. If the center were to be presented alone without the surround, it would in fact be tilted and not vertical as we would expect. 10. Pooling all of the orientations from the data that were present when a key press occurred would not give the expected result of similarity in positions. The expected distribution