Lab 12 Sense Perception Flashcards Preview

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Flashcards in Lab 12 Sense Perception Deck (10):
1

Visual Acuity

The measurement of the farthest distance at which a person can still see objects clearly.

-To test visual acuity we took an eye exam in which we read letters that ranged in size from 20 feet away. We tested one eye at a time.

2

Astigmatism

the cornea is not uniformily thickened througout, so not all areas of the field of vision will be in focus at the same time.

-To test stare at the center of an astigmatism chart with its lines radiating out from the center from 1-3 from way. If certain lines appear appreciably darker or clearer than others, this is an indication of astigmatism.

3

Color-blindness

The inability to distinguish between certain colors.

4

Negative or Positive Afterimage

-negative afterimages: light will appear as dark, dark as light, and colors will appear more or less as their complementary (opposite) color
-positive afterimages: bright will appear as bright, dark as dark, and colors will appear true but faded.

5

Steroscope

one of human's earliest applications of depth perception to try to make two-dimensional pictures appear to be 3D. You look into the binoculars and can see pictures.

6

Why do double images occur

Because our eyes are focused NOT CORRECT!

7

Why can we see depth (3D)

Each eye is located at a different position on the head, and each eye sees a slightly different view of any object. These different views being transmitted to the brain simultaneously allows us to perceive depth.

8

Why do afterimages occur

An afterimage is an image which persists; this is, it can still be perceived after the eye is no longer viewing the object.

9

Explain Taste and smell (both important for flavor, especially smell)

Taste and smell are directly linked. There are more

10

Cones & Rods

-Cones allow for colored vision and work best with bright light.
-Rods can only give white and black, and work best in dim light.