Psychology: Perception and Sensation Essays

To represent the world in our head, we must detect physical energy from the environment and encode it as neural signals, a process traditionally called sensation. As we sense the world or react to particular stimuli , our brains receive that visual information and transform it into neural impulses called transduction. Our eyes, a light-capturing organ, consists of many parts that aid in our vision. The retina, specifically the eye's light-sensitive surface on which the light rays are focused, contain rods and cones. These cells enable color and are sensitive to light (cones) and enable black and white in darkness as well (rods). Perception begins with such articulate neural activity that is based on our expectations and experiences, or through top-down processing to accurately execute the recognition of a stimuli cognitively. The absolute threshold plays a crucial guise in visual perception as well. Absolute threshold enhances these perceptions to a more accurate result-the minimum stimulation necessary to detect a particular stimuli. When beholding a specific visual scene, the brain uses its remarkable receptor cells to extinguish complex lines, shapes, forms, etc., allowing us to clearly define depth and perceive a certain shape or form. In all synchronous operation, these terms are only a crucial component in visual perception.

Many monocular cues, depths, forms, and colors, are all entailed in a movie. Specifically an action movie where all arrays of cues are stimulated in unison. Perceptual constancy, sets, and stroboscopic movement, in particular are crucial components on how the brain stimulates cues and perceives them. Perceptual sets-mental predispositions that greatly influence what we perceive-are consisted in a movie such as in the movie Superman, when the people perceived Superman flying to be a bird or a plane. Our perceptual sets are predisposed to what influences us. Metropolitan citizens are comfortable with the sight of airplanes and birds,