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This volume was designed to focus on the problems of perception and originally was to have been solely edited by Professor Hans-Lukas Teuber who was a member of the editorial board which initiated production of the Handbook. Accordingly, he issued invitations to a number of researchers III perception asking them to contribute chapters written in a style described III his words: " . . . Ire hope that no author lI´ill feel COl/strained to undertake a major search of the literature: he could In´ite, instead. on an area in which he has been quite actire himse?t~ and II´here most of the issues are immediately obt"ious to him. In this Iray, the IITiting of the chapter should be cnjoyable rather than a chore . . it should result in a personal account of the state of a given area rather than in an encyclopedic treatise . . . the field deserves this sort of summary ret´iell", particularly (f it is pointed toward the future and speeds the convergence of det´elopments in sensory physiology and psychological studies of perception, " With the growing burden of national and international commitments includ ing departmental headship, Professor Teuber felt that it would be wise to share the editorial responsibilities for this volume and accordingly, asked Professors Richard Held and Herschel Leibowitz to co-edit the volume with him in the same spirit as outlined in his invitation to authors. They agreed to help in this task.

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I. Basic Features.- A. Feature Filters and Channels.- 1 Channels in Vision: Basic Aspects.- 2 Spatial Frequency Channels: Neural Mechanisms.- 3 Physiological Basis of Motion Perception.- 4 Form-Color Aftereffects in Human Vision.- 5 Phonetic Perception.- B. Depth and Distance.- 6 Primary Distance Perception.- 7 Global Stereopsis: Cooperative Phenomena in Stereoscopic Depth Perception.- C. Developmental Processes and Species Comparison.- 8 Mechanisms of Shape-Recognition Among Vertebrates.- 9 Ethological Aspects of Auditory Pattern Recognition.- 10 Visual Competence in Early Infancy.- 11 Developmental Aspects of Speech Perception.- D. Effects of Deprivation.- 12 Maturation and Modification in the Developing Visual System.- 13 Sensory Deprivation and Visual Discrimination.- 14 Form Perception and Related Issues in Blind Humans.- II. Complex Aspects of Perception.- A. Spatially Distributed Patterns.- 15 Human Perception of Patterns and Objects.- 16 Visual Illusions.- 17 Figurai Aftereffects.- 18 Face Perception: A Review of Experiments with Infants, Normal Adults, and Brain-Injured Persons.- B. Temporal Patterns.- I. Speech Perception.- 19 Word and Sentence Perception.- 2. Spatio - Temporal Pattern.- 20 Visual Masking.- 21 Apparent Movement.- 22 Visual Event Perception.- 23 Time Perception.- 24 Perceptual Aspects of the Reading Process and Its Development.- C. Intermodal Effects.- 25 Visual - Vestibular Interaction: Effects on Self-Motion Perception and Postural Control.- 26 Some Mechanisms Underlying Sensory and Postural Stability in Man.- D. The Problem of Pain.- 27 Pain Perception in Man.- E. Perceptual Effects of Cerebral Lesions.- 28 The Brain and Human Behavior.- Author Index.

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