PSYCHOLOGY:, Study notes of Psychology

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PSYCHOLOGY:

LESSON #14 APRIL 9

SENSATION VS. PERCEPTION

Learning Target: The student will be able to

explain the relationship between sensation &

perception.

Warm Up

Look at the image on the

following slide. On a slip of

paper, write down what you see

and what you perceive as you

look a the image.

Warm Up Answer

Did you see a dog or some sort of animal in the middle of the image? Did you see a person or a creature swimming in a lake? Did you see a killer clown? Those are just some of the responses that people often give when asked what they see in this image.

And they’re all wrong!

We all see the same thing...the black blotches on a white background. That’s what you saw which would be the same for everyone. However, when those patterns and colors made their way into your brain, your brain took put them together and using information it had already built up in your mind, perceived them as being the dog, the swimmer, or even the clown.

Sensation = Bottom-Up Processing

Perception = Top-Down Processing

Sensation

Perception

Top-Down Processing

THE CHT

Processing of information is guided by higher-level mental processes. As we construct perceptions we draw on our experience and expectations. The brain has taken the information and using what it already knows, gives us a perception. This is “Top-Down Processing.”

Did you read the bottom of this slide as “THE CAT?” Probably so, but does it doesn’t really say that? The A in CAT actually looks more like an H, but our brain, using its previous experiences and expectations, told us the middle letter was an A because we know the word CAT.

ACTIVITY: Top-Down Processing

Take 30 seconds and try to read the following passage to yourself:

“Goccdrnia to hscheearcr at emabrigdc

yinervtisu, it teosn'd rttaem in tahw rredo

the stteerl in a drow are, the ylno tprmoetni

gihnt is taht the trisf and tsal rtteel be at the

tghir eclap. The tser can be a lotat ssem

and you can litls daer it touthiw a morbelp.

Siht is ecuseab the nuamh dnim seod not

daer yrvee rtetel by fstlei, but the drow as a

elohw.”

Student Practice:

1. Sensation is which type of processing?
2. What does Top-Down Processing create in our brain?
3. What does our brain draw on to create our perceptions of what has been sent to our brain?
4. Where does the analysis of a stimulus begin?

Student Practice Answer Key:

1. Sensation is which type of processing? - BOTTOM-UP PROCESSING
2. What does Top-Down Processing create in our brain? - PERCEPTION
3. What does our brain draw on to create our perceptions of what has been sent to our brain? - EXPERIENCE AND EXPECTATION
4. Where does the analysis of a stimulus begin?
   • SENSE ORGAN RECEPTOR SITES