Aperture viewing : A review and a synthesis

We argue that two processes are involved in the visual perception of shapes moving behind narrow apertures. “Retinal painting” occurs when the eyes are free to pursue the moving shape and when the traverse time across the aperture is sufficiently short to allow visual persistence of the temporally successive views. When pursuit eye movements do not occur, however, the shape may still be perceived if it moves relatively slowly. The latter kind of perception does not involve seeing all the parts of the shape simultaneously (as in the case with retinal painting) but we demonstrate that shapes seen in this way have some of the same properties as conventionally presented shapes. The discussion emphasises the relevance of these findings to general problems in movement perception.     

The contribution of the human medial temporal lobe to perception: Bridging the gap between animal and human studies

The medial temporal lobe (MTL) has been considered traditionally to subserve declarative memory processes only. Recent studies in nonhuman primates suggest, however, that the MTL may also be critical to higher order perceptual processes, with the hippocampus and perirhinal cortex being involved in scene and object perception, respectively. The current article reviews the human neuropsychological literature to determine whether there is any evidence to suggest that these same views may apply to the human MTL. Although the majority of existing studies report intact perception following MTL damage in human amnesics, there have been recent studies that suggest that when scene and object perception are assessed systematically, signifi-cant impairments in perception become apparent. These findings have important implications for current mnemonic theories of human MTL function and our understanding of human amnesia as a result of MTL lesions.