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comm 6 ) Sensation and Perception Overview Chapter 6 explores the processes by which our sense receptors and nervous system represent our external environment (sensation), as well as how we mentally organize and interpret this information (perception). The senses of vision, hearing, taste, touch, smell, and body position and movement are then described. In discussing vision, the text describes the ways in which we organize stimuli in the environment to per- ceive form; depth; motion; and constant shape, size, and brightness. To enhance your understanding of these processes, the chapter also discusses research findings from studies of perceptual set, subliminal stimulation, sensory restriction, recovery from blind- ness, adaptation to distorted environments, and extrasensory perception. In this chapter there are many terms to learn and several theories you must understand. Many of the terms are related to the structure of the eye, ear, and other sensory receptors. Answering the fill- in, multiple-choice, and essay-type questions sev- eral times, labeling the diagrams, and rehearsing the material frequently will help you to memorize these structures and their functions. The theories discussed include the Young-Helmholtz three-color and opponent-process theories of color vision, the Gestalt theory of form perception. the place and fre- quency theories of hearing, and the gate-control the- ory of pain. As you study these theories, concentrate on understanding the strengths and weaknesses (if any) of each, NOTE: Answer guidelines for all Chapter 6 questions begin on page 153. Outline Basic Concepts of Sensation and Perception Vision: Sensory and Perceptual Processing _ The Nonvisual Senses Instructions First, skim each section, noting headings and boldface items, After you have read the section, review each objective by answering the fill-in, essay-type, and multiple-choice questions for that section. In some cases, Study Tips explain how best to learn a difficult concept and Applications and Section Reviews help you to know how well you understand the material. Finally, try to define the important terms and con- cepts using your own words. As you proceed, eval- uate your performance by consulting the answers on page 153. Do not continue with the next section until you understand each answer. If you need to, review or reread the section in the textbook before continuing. Before You Move On includes activities that test you on material from the entire chapter 133 
