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AP Psychology Videos 135 videos

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AP Psychology 2.5 Sensation and Perception 7 Views


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Description:

AP Psychology 2.5 Sensation and Perception. What is the brain's ability to interpret the same color despite changes in lighting called?

Language:
English Language

Transcript

00:03

Here's your shmoop du jour brought to you by art museums what [Man looking at paintings]

00:07

can we say we Louvre a good Art Museum alright here's today's question Susana

00:13

loves to visit her local museum her favorite painting is a haystack sitting [Susana looking at painting of haystack]

00:18

against a blue sky and it's located next to a window during different times of

00:23

the day the shade of the haystacks seems to change but her brain always processes

00:27

the color as straw the ability of the brain to interpret the same color

00:32

despite changes in lighting is called what and here are your potential answers ....

00:39

well it's interesting as that whole Susana story was the real meat of the [Woman watching TV]

00:43

question is in the last sentence the ability of the brain to interpret the

00:48

same color despite changes in lighting is called what that thing well B

00:52

definitely isn't the one that we want The word linear doesn't

00:58

exactly have anything to do with color and shape actually linear perspective [Parallel lines below linear perspective]

01:01

refers to the depth cue we receive from parallel lines that appear to converge

01:05

think like you know railroad tracks and think quick that trains coming fast

01:10

hey speaking of lines, continuity a

01:13

Gestalt rule of perception most often refers to lines describing the visual

01:17

tendencies to create continuous figures take the lines for railroad tracks if we [Person highlighting railroad tracks]

01:22

were to cross them well typically we'd still see the two lines as separate

01:26

figures we carry the line forward even when they cross but again this is

01:31

totally unrelated to color in the perception of it so a nice try there [Gestalt standing with a cane]

01:35

Gestalt we know it must've been tough to click away from the cat videos on

01:39

YouTube to watch this one because we're super nice we're going to make that

01:42

pain a little easier to bare so look at this kitty cute huh snap, close one eye okay [A cat with one eye closed]

01:47

good now open that eye and close the other eye yeah you saw that little furry guy

01:52

slightly differently that time right well that's what's described as

01:56

binocular disparity and while it may have just made you look a bit goofy in [Man transforms face into goofy]

02:02

front of your computer screen it's also not what we're looking for all right

02:05

say goodbye to fluffy only temporarily, we promise so that leaves us with C and E

02:09

okay so we all know what an optical illusion is it's this and this and this [Examples of optical illusions]

02:14

it's fun to play around with but not our answer but there is a great optical

02:19

illusion that illustrates the correct answer C - brightness constancy take a

02:24

look at this image compare the colors of the checkers mark a and B do they look

02:29

different too yes probably but they're not ooh spooky

02:32

your brain is contextualizing the colors based on the perceived shadow cast from

02:37

the green cylinder which is directly toying with the concept of brightness [Checkers board with a green cyclinder]

02:41

constancy well brightness constancy describes how despite the change of

02:46

light condition we always perceive colors the same way in other words our

02:50

brains adapt and alter our perceptions based on the lighting conditions around

02:55

us taking into account light sources and shadows which is exactly what the

02:59

question describes and now that we finished this question let's resume [Man watching cat videos]

03:03

which should always be our regularly scheduled programming cute little kitty...

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