Figure 2.
Results of Experiment 1. The surround mask appeared simultaneously with the target, the stimulus duration varied between 12 msec and 375 msec (shown on a logarithmic scale). Filled squares show detection threshold elevation for binocular viewing (target and mask in both eyes). Open circles show results for interocular viewing: target displayed to the left eye, surround mask displayed to the right eye. Hashed squares show results for the two control conditions: 95% contrast mask for the shortest stimulus duration, and 10% contrast mask for the longest stimulus duration.