Howard details historical display systems like panoramas, peepshows, and the invention of the stereoscope, which first allowed humans to artificially simulate depth.
is a foundational work by Ian P. Howard that serves as a definitive technical review of the biological and psychophysical processes allowing humans and animals to navigate a three-dimensional world. Perceiving in Depth Volume 1 Basic Mechanisms
The text follows the visual signal from the eye through the Lateral Geniculate Nucleus (LGN) to the visual cortex. It pays specific attention to the columnar organization of the cortex, which is specialized for depth-related processing. The text follows the visual signal from the
The volume opens by tracing visual science from the ancient Greeks to the early 20th century, highlighting the evolution of our understanding of perspective and stereoscopic vision. Unlike simpler texts, this volume also provides deep
Unlike simpler texts, this volume also provides deep dives into the motor controls of vision, such as accommodation (the eye's ability to focus) and vergence (the simultaneous movement of both eyes to maintain single binocular vision). Development and Neural Plasticity
A detailed analysis covers how disruptions during these critical periods—such as strabismus (crossed eyes) or monocular deprivation—can lead to permanent defects like amblyopia (lazy eye) or a total loss of stereoscopic vision.
The book outlines the precise behavioral and analytic procedures used to measure how subjects respond to visual stimuli, establishing the rigorous scientific standard for modern depth research. The Biological Machinery of Vision