 Earlier, we worried about mere correlates. To get causal or explanatory purchase, the content of the MT neurons correlated to the animal’s behavior must be shown to contribute to perceptual guidance. This predicts that if we manipulate the content of the neurons, i.e., manipulate neural representations, then we should manipulate the content of the animal’s visual experience of motion as reflected by predicted changes in behavior. This would be to test sufficiency with respect to specific consciousness.