One way to think of this concept is that sensation is a physical process, whereas perception is psychological. Now you are processing the shape in a top-down fashion. When given a context, your perception is driven by your cognitive expectations. There is no context to give it a specific meaning, so there is no top-down processing involved.įigure 3. With top-down processing, you use context to give meaning to this image. There are two thick vertical lines and three thin horizontal lines. Seen alone, your brain engages in bottom-up processing. Where cognitive psychology of a person’s environment affects their stimulus processing. In top-down processing, there is always bias of environmental factors on a personal perception of the stimulus, this is known as context effect. An example of this is if you see the chair you have stubbed your toe on before and you avoid it to make sure it does not happen again. An example of this is stubbing your toe on a chair, the pain receptors detect pain and send this information to the brain where it is processed. On the other hand, how we interpret those sensations is influenced by our available knowledge, our experiences, and our thoughts. Bottom up processing is when sensory receptors pick up signals for the brain to integrate and process.
Bottom-up processing refers to the fact that perceptions are built from sensory input. Perception involves both bottom-up and top-down processing. Perception refers to the way sensory information is organized, interpreted, and consciously experienced. While our sensory receptors are constantly collecting information from the environment, it is ultimately how we interpret that information that affects how we interact with the world. Perception refers to the way sensory information is organized, interpreted, and consciously experienced and involves both bottom-up and top-down processing.
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