Sensation occurs when sensory organs absorb energy from a physical stimulus in the environment then sensory receptors convert this energy into neural impulses and send them to the brain. While Perception follows and the brain organizes the information and translates it into something meaningful. Sensation in the body is not voluntary it is involuntary and after a sensation is sensed from the environment our bodies identify this sensation and perceive it to be one of the many perceptions we have today such as, pain, excitement, involving hearing, touch, tasting and seeing.
Some students may find this confusing due to the very close similarities between sensation and perception. Like i said before, sensation is involuntary and comes before perception. After a sensation is sense the body turns it into perception and the brain then tells the rest of the body how to react and feel based on its perceived notion of the sensation. Both words are very close in definition but very different in actual action.
"Suppose that a reader has just read, "Daylight savings time ends tomorrow, and so people should remember to change their..." According to the top down view, the reader guesses that the next word in the sentence will be "clocks." The reader checks that the word begins with a "c" and, because the hypothesis has been supported, does not take in any remaining letters of the word. This is an example of the sensation of sight because in order for the body to interpret perception after sensation, it must sense a sensation then translate it into something that can be responded to or acted upon, in this example knowing the next word is clocks. After the reader has read the sentence but before reading the word clocks, the person reads the first letter of the word instead of the full word assuming its clocks and moves on. Bottom up processing is the opposite where the reader would read the full word then interpret its meaning without assuming what the word actually is instead.
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