HCI - THE HUMAN Part 1

Question 1

Information is received and responses given via a number of input and output channels

Answer 1

visual channel, auditory channel, haptic channel, movement

Question 2

Vision begins with ____.

Answer 2

light

Question 3

it is the primary source of
information for the average person.

Answer 3

visual channel

Question 4

the ______ in the eye transform it into electrical signals which are passed to the brain

Answer 4

receptors

Question 5

the ______ and ______ at the front of the eye focus the light into sharp image on the back of the eye, retina.

Answer 5

cornea and lens

Question 6

what is the 2 types of photoreceptors of the retina?

Answer 6

rods and cones

Question 7

____ are highly sensitive to light and therefore allow us to see under a low level of illumination.

Answer 7

rods

Question 8

they are less sensitive to light and can therefore tolerate more light

Answer 8

Cones

Question 9

retina has specialized nerve cells called ____.

Answer 9

ganglion cells

Question 10

two types of ganglion cells

Answer 10

X - cells and Y - cells

Question 11

concentrated in the fovea and are responsible for the early detection of pattern

Answer 11

X - cells

Question 12

more widely distributed in the retina and are responsible for the early detection of movement

Answer 12

Y - cells

Question 12

it is affected by both size of the object and its distance from the eye

Answer 12

visual angle

Question 13

a subjective reaction to level of light

Answer 13

brightness

Question 14

the amount of light emitted by an object

Answer 14

luminance

Question 15

it is a function of the luminance of an object and the luminance of its background

Answer 15

contrast

Question 16

usually regarded as being made up of three components: hues, intensity and saturation

Answer 16

color

Question 17

brightness of the color

Answer 17

intensity

Question 18

the amount of whiteness in the colors

Answer 18

saturation

Question 19

determine by the spectral wavelength of the light. blues have short wavelength, greens medium and red longs

Answer 19

hue

Question 20

involves the transformation and the interpretation of the complete image, from the light that is thrown onto the retina

Answer 20

visual processing

Question 21

highlight the differences between the way things are and the way we perceive them

Answer 21

optical illusion

Question 22

in _____ _____ we need to be aware that we will not always perceive things exactly as they are

Answer 22

interface design

Question 23

first stage of reading process

Answer 23

First, the visual pattern of the word on the page is perceived

Question 24

second stage of reading process

Answer 24

It is then decoded with reference to an internal representation of language.

Question 25

third stage of reading process

Answer 25

The final stages of language processing include syntactic and semantic analysis and operate on phrases or sentences

Question 26

words can be recognized as quickly as

Answer 26

single characters

Question 27

it is often considered secondary to sight and often underestimated on the amount of information that can be received

Answer 27

hearing

Question 28

hearing begins with ____

Answer 28

sound waves or vibration in the air