In general, I have been interested in how we perceive the relationship of objects in space and if we can develop an awareness of depth in time as we perceive and understand depth in space.

In the evolution of the human brain and visual system, the development of using two eyes in stereovision was important to separate objects from a background (this was originally important in finding food and identifying enemies - later it had a lot to do with our ability to name and catalog objects around us). In viewing 3D images, the eyes (and brain) have to work together to explore the space of the images and in effect, interact with the image - more so than in a traditional, flat 2D image.

These images are often much 'deeper' and objects appear more 'solid' in these images than they do in "real life." I think it has something to do with how often we switch our attention from the world around us to our inner thoughts and activities. Some days we pay more attention to the 'outside' world and see things in greater depth. Some days we are more immersed in our own thoughts. A related issue is the idea of 'solidity' and how things change over time. Most 'objects' have a limited period of solidity before their components become reconfigured.

Texts by Scott Fisher
Edited by Randall Packer

Culled from the following source:

• "The Eye in Time: Looking Back;" Scott Fisher; ICC InterCommunication, No. 4, Spring, 1993.