Journal Entry #3

Journal Entry #3 - Journal Entry #3: Chapter 6, 7, & 10...

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Psychophysics is the field of study which is concerned with how the physical properties of stimuli are related to out psychological experience of them. They have also studied how the strengths or intensity of a stimulus affects the strength of sensation in an observer. Sensory adaptation is defined as the reduction or disappearance of sensory responsiveness when stimulation is unchanging or repetitious. Receptors or nerves cells higher up in the sensory system get "tired" and fire less frequently. The resulting decline in sensory responsiveness is call sensory adaptation. Sensation is defined as the detection of physical energy emitted or reflected by physical objects; it occurs when energy in the external environment or the body stimulates receptors in the sense organs. (the eyes, ears, tongue, noise, skin and internal body tissues. Perception is defined as the process by which the brain organizes and interprets sensory information; a set of mental operations that organizes sensory impulses into meaningful patterns. Perceptual Constancy is defined as the accurate perception of objects as stable or unchanged despite changes in the sensory patterns they produce. Shape Constancy: an object perceived as having constant shape even though the shape of the retinal image produced by the objects changes when our point of view changes. Location Constancy: A stationary objects seen as remaining in the same place even though the retinal image moves about as we move our eyes, heads and bodies. Size Constancy: An object that has a constant size even when its retinal image becomes smaller or larger. Brightness Constancy: An object that is seen having a relatively constant brightness even though the amount of light they reflect changes as the overall level of illumination changes. Color Constancy: An object that is seen to having maintained its hue despite the fact that the wavelength of light reaching our eyes from the object may change as the illumination changes. Gestalt Principals are defined as principals that describe the brain's organization of sensory information into meaningful units and patterns. For example, when you go outside on a clear night and look up to the sky, the way the stars arrange themselves in such closeness it tricks us into seeing them bunched together to form a pattern. This is how we see the Big Dipper. The parts of the ear consist of the following: Outer ear, middle ear, inner ear, auditory canal, semicircular canals, and auditory nerve leading to brain, cochlea, oval window (membrane), "Stirrup" bone, "Anvil" bone, "Hammer" bone, eardrum, middle ear cavity, hair cells (cilia), basilar membrane, and fluid. They covert sound to hearing by collecting sound waves by the outer ear, the sound waves are channeled down the auditory canal, causing the eardrum to vibrate. These vibrations are then passed along to tiny bones of the middle ear. Movement of these bones intensifies the force of the vibrations separating the middle the force of
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Journal Entry #3 - Journal Entry #3: Chapter 6, 7, & 10...

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