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Chapter 5

Chapter 5.docx

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Chapter 5 lecture 1922 Remember Weber he tried to learn the internal state of peopleHow do we actually perceive the external worldSlide 2 You listen and interpret but the mind uses previous knowledge to predict whats about to be said next Topdown influence memory previous influence Bottomup influence Sensation is the final outputHow do we get from patterns of light to seeing people Google perceptual illusion to see some weird stuff that can trick your visual perceptionSlide 3 You can see things fine but you may not recognize what the meaning isPerception a recognition of what you seehear etc Sensation the raw inputs ex Colours you see Slide 4 Transduction a process that changes a physical stimulus from the external world translates it and sends it to the neural impulse It depends on what energy the sensors are sensible to receptor cells they react to that energy Table 51 sensory systems and what energy theyre sensitive to Some are chemical that need to directly touch you while others like radiant energy can reach you from a long distance Muscle systems have sensory inputs as wellWe need to realize how limited our sensory systems are ex The wavelength of light diagram were only sensitive to visual light Theres more in the world that we cannot see our sensory system is imperfectSlide 5 Our neurons are simplified but can process the complex environment The computer is another example of that it can create and process very graphic and rich content out of just 0 and 1Morris code each letter has different lengths of bars You can tap it or hold it down The dot and dash can form spellings and communicate a rich message Ex On boats you flash lights to send messages between boatsSlide 6 Nerve cells can either fire or not The rate of firing sends a message to the brain as to what is happening to the rest of the body it shows where it originated as well
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