Lecture 4

Question 1

Where does the ventral visual path go?

Answer 1

Inferotemporal (IT) cortex

Question 2

Where are faces recognised?

Answer 2

IT cortex

Question 3

What are gnostic cells?

Answer 3

Grandmother cells, only fire to a specific stimulus

Question 4

What is the local coding theory?

Answer 4

Gnostic cells

Question 5

What is wrong with the local coding theory?

Answer 5

• Need lots of cells
• Susceptible to damage
• How to perceive new objects
• Probability of finding right cell in study
• Can’t generalise
• No pattern completion

Question 6

Why do we need to be able to finish patterns?

Answer 6

So can tell what an object is even if we can’t see the whole thing

Question 7

What is Gestalt law of closure

Answer 7

Can see whole image even when not complete, e.g. WWF logo

Question 8

What is pareidolia?

Answer 8

See faces and things in objects when they’re not actually there

Question 9

Why do we need to be able to generalise visual stimuli?

Answer 9

So can tell an object is the same thing even when it is at different angles etc.

Question 10

What is the dense/ensemble/distributed coding theory?

Answer 10

Each cell recognises a certain aspect of an object and the pattern is recognised

Question 11

What did Quian et al. (2008) do?

Answer 11

First found Jennifer Anniston cells

Question 12

What did Chang and Tsao (2017) do?

Answer 12

Looked at how people reacted to facial landmarks and recreated faces based on neural firing activity