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CHAPTER_4__Sensation_and_PERCEPTION

CHAPTER_4__Sensation_and_PERCEPTION - CHAPTER 4 SENSATION...

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CHAPTER 4 SENSATION and PERCEPTION Outline Experiencing Sensation How We See and hear Vision Hearing Experiencing Sensation What is the basic concept of the process of sensory experience? Some of the common examples of sensation are that we hear, we see things and we smell things. These are known as sensory experiences. The basic concept is SENSATION. In Psychology this term is used differently as compared to its use in common language. It is a scientific Psychological terminology. What is Sensation? It is defined as, “The process of receiving, translating and transmitting, raw sensory data from the External and Internal environment to the brain.” This definition contains 3 components. 1. Reception 2.Sensory analysis 3. Coding Reception: There is numerous stimuli information, outside environment as well as inside our body which constantly affect us. These outside and inside
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information are received by our sensory receptors, which are connected to our sense organs. The examples are: Stimulus informatio n Sensory receptors Sensatio n light eyes Vision sound Ears Hearing Bad odor nose Smell food tongue Taste pressure Skin Touch These above mentioned organs have receptors, the special cells, which receive the information about the outside world. The process of receiving depends upon DATA REDUCTION SYSTEM. That means there are so many information in the environment. We select only those information which are important at the moment. Sensory Analysis: The brain does not understand about the outside world just because receptors received the information. So, once the information is received, it needs further processing of information to understand it. The data obtained by senses are analyzed based upon the features of the data. For example, we see a design based upon its color, lines, shapes etc. We are biologically tuned this way, to have FEATURE DETECTORS. Example: The frogs are highly sensitive to small, dark moving objects or spots. In other words, they have feature detectors. Frogs would not have been able to catch the flies and they would have starved to death. CODING : Once the information is received by the receptors, it is transferred in a language that brain can understand. The stimulus information is converted into neural impulses, which are sent to the brain.
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