Lecture 2 - Human Brain Capabilities

Question 1

What are the 3 capabilities of the human brain?

Answer 1

• memory
• cogntion
• memory

Question 2

What is perception?

Answer 2

First stage of processing in the brain, which is just after sensing. Associations and meanings start to take shape

Question 3

What is JND?

Answer 3

Just noticeable difference

the threshold at which people stop perceiving difference

Question 4

Why do we care about JNd?

Answer 4

As we want to know what the users can tell apart before implementing a change

Question 5

What are illusions?

Answer 5

when our perception fills in the gaps in ambigous stimuli making it look different than it actually is

Question 6

What senses are tricked with illusions?

Answer 6

visual , aural , aptic

Question 7

Common illusions are to do with..

Answer 7

depth perception

Question 8

What is cognition?

Answer 8

human process of concious intellectual activity
- thinking , reasoning , deciding

Question 9

Can illusions be used to improve usability?

Answer 9

yes , but rarely

Question 10

What is memory?

Answer 10

Ability to store , retain , recall information

Question 11

What is the short term memory capacity?

Answer 11

7 +/- 2

used to guide design