The Neural Control of Visually Guided Eye Movements
C. Cortical Mechanisms of Visually Guided Saccadic Eye Movements

Figure 18 shows what happens when the upper layers of V1 are stimulated. What we have here, surprisingly, is a dramatic interference effect. Stimulation greatly decreased the probability with which the target appearing in the receptive field of the stimulated neurons was chosen. In area V2 similar results were obtained. In the lower layers stimulation produced facilitation whereas in the upper layers it produced interference.