(with Ilona Kovacs, Ming Yang & Akos Feher "When the brain changes its mind: Interocular grouping during binocular rivalry," Proceedings of the National Academy of Sciences USA, 93, 15508-15511, 1996.)

If you can fuse the two top images binocularly, you will alternate perceiving the monkey and the foliage.

For the bottom two images, there will be time intervals that you will perceive the monkey or the foliage, even if neither eye contains the entire monkey or foliage images.