Perception Beyond Gestalt by Geremek, Adam -- Read -- Imperial Library of Trantor

Index

Cover Half Title Title Page Copyright Page Table of Contents List of contributors Preface 1. Perception beyond Gestalt: introductory remarks

References

Part I: Gestalt and perceptual organization

2. How much of Gestalt theory has survived a century of neuroscience?

Introduction How Gestalt psychology started Gestalt theory Some early Gestalt history From speculation to facts End of electrical field theory Single-neuron doctrine Further developments Re-emergence of Gestalt issues Larger implications: a modern view on a radical vision Remaining challenges Summary/conclusion Acknowledgments References

3. Perceptive fields and receptive fields

Introduction A general schema Parallel conceptual architectures Parallel historical developments Multiple pathways Reverse correlation and classification images Comparisons Summary/conclusion References

4. Spatiotemporal unity of perception: given or derived?

Introduction Neural network approaches to object vision

Neurobiological substrate for form-processing and surface-processing systems in primate visual cortex Evidence for separate but interactive form-processing and surface-processing systems in human vision

The spatiotemporal dynamics of form and surface processing

Nonconscious level Conscious level

A Reversal of temporal order

Evidence for surface filling-out

Summary/conclusion References

5. What is a perceptual object? Beyond the Gestalt theory of perceptual organization

Introduction: on the problem of visual object

The Gestalt approach to figure-ground segregation The Gestalt approach to perceptual grouping Figure-ground and grouping issues

What is a perceptual object?

Many possible objects within one stimulus pattern Object masking and unmasking Same but different objects Object attributes and related effects One, none, and a hundred thousand objects Deceiving object camouflage by accentuation

Summary/conclusion Acknowledgments References

6. Self-organizing properties of the visual field: Gestalt forces in action

Introduction Effect of shape contour on localization Vector field decomposition of localization errors Attractor basins and unstable equilibria points Effects of time delay on localization errors Effects of field size on localization errors Effects of number of targets on localization errors Implications for artistic composition Other localization research Summary/conclusion Note References

Part II: Attention, aftereffects and illusions

7. Attention, grouping and non-retinotopic representations

Introduction Spatiotemporal grouping Non-retinotopic processing Role of attention in the transfer of information from retinotopic to non-retinotopic representations Summary/conclusion Acknowledgement References

8. Probing human vision with spatial adaptation

Introduction

The basic phenomenon

Mapping spatial channels Is the visual cortex a spatial frequency analyzer? The mechanism of spatial adaptation

The time course of adaptation

Adaptation in the motion domain Higher order adaptation effects in human vision Summary/conclusion Acknowledgements References

9. From Hermann’s grid to Spillmann’s weaves

Introduction High spatial frequency content in Spillmann’s weaves Summary/conclusion References

10. Motion illusions as a psychophysical tool to investigate the visual system

Introduction Motion illusions Illusory motion in stationary stimuli Misperception of motion Summary/conclusion Acknowledgements References

Part III: Color vision and art perception

11. In search of neurophysiological correlates to color perception

Introduction A brief history of color vision

Newton and the spectrum The opponent-color theory The three-color theory and the three-receptor theory Zone theories Receptive fields

Challenges

Is population coding a way out?

Summary/conclusion References

12. Color and figure-ground: from signals to qualia

Introduction Perceptual space from planar objects: the role of luminance contrast and geometric cues Surface effects from color

Chevreul’s laws Law of ‘true’ color Law of contrast

How does the brain compute figure-ground?

Signal selection to trigger visual attention From contours in the plane to surfaces in depth: Grossberg’s FACADE theory

Summary/conclusion Acknowledgement References

13. Chromatic assimilation in visual art and perception

Introduction Assimilation in art What do we know about chromatic assimilation? Long-range color assimilation: the watercolor illusion

Characteristics of the WCE Neural mechanisms underlying the WCE

Summary/conclusion References

14. The phenomenon of colored shadows

Introduction Measuring the shadow colors Chromatic induction and colored shadows Color contrast and color constancy The biological significance of color constancy Colored shadows and color constancy

Colored shadows in art

Summary/conclusion Acknowledgements References

Color plate section Index

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