Object Recognition

Question 0

What percentage of the neurones in the parietal cortex have receptive fields that exclude the fovea?

Answer 0

60%

Question 1

What are the names of the two visual pathways?

Answer 1

Dorsal (where)

Ventral (what)

Question 2

What stimulus do neurons in the parietal cortex respond to?

Answer 2

Variety including large objects, small objects

Question 3

What do the receptive fields in the temporal cortex always encompass

Answer 3

Fovea

Question 4

What versus where in the monkey visual cortex (pohl, 1973)

Answer 4

They found that the inferotemporal cortex is the where

Parietal cortex is the where

Question 5

What do lesions to the inferotemporal cortex impair

Answer 5

Object recognition

Question 6

What do lesions to the parietal cortex impair

Answer 6

Spatial recognition

Question 7

What versus where: neuroimaging evidence (kohler et al (1995))
What did they do

Answer 7

Given two pics
Spatial location same/ different?
Object identity same/ different?

Question 8

What v where: kohler results: what did they find in those with parietal cortex lesions

Answer 8

Hemispatial neglect and optic atoxia

Question 9

What v where: kohler: results: what did they find in those with temporal cortex lesions

Answer 9

Visual agnosia

Deficit in recognising objects

Question 10

What is apperceptive agnosia

Answer 10

Can’t perceive objects
Need more info to identify an object
Don’t have object constancy

Question 11

What is object constancy

Answer 11

Can recognise objects from different angles

Question 12

Describe how that links to the miller lyer illusions

Answer 12

Not sure but know what it is

Question 13

What did the study by Henson et al (2002) look at?

Object recognition

Answer 13

FMRI adaptation > region in left fusiform cortex that represents objects in a viewpoint independent manner

Question 14

What is integrative agnosia

Answer 14

Can’t see objects as a coherent whole (2 triangles and a square)

Question 15

How would patients with integrative agnosia draw two squares and a triangle (kanwisher)

Answer 15

Lateral occipital complex combines features into shapes

Question 16

What is associative agnosia

Answer 16

Can’t access semantic knowledge of objects

Can’t represent objects by their function

Question 17

Describe the study by tanaka and Farrah (1993)

Looks at face perception

Answer 17

Faces are processed holistically

Question 18

What is prospoagnosia

Answer 18

Can’t recognise faces
Can recognise common objects
Can recognise people from their voices

Question 19

What did kanwisher suggest

Answer 19

The fusiform face area- a face processing module

Question 20

What would suggest that the FFA has within category distinction

Answer 20

Sheep farmer with prospoagnosia

• failed to recognise familiar faces
• could recognise individual sheep from his flock

Question 21

What are grandmother cells

Answer 21

Cells that respond preferentially to your grandmothers face

Computationally inefficient
Susceptible to error
Novel objects
Changed in the appearance if grandmother

Question 22

What are the criticisms of the quiroga Study about Jennifer Anniston neurons in temporal cortex

Answer 22

Small subset of neurons recorded from a small set of stimuli tested
Cell also responses to the word Jennifer Anniston

Question 23

What the ensemble theory

Answer 23

Object recognition results from activation across complex feature detectors
Granny recognised when these higher order neurons are activated

Question 24

What does the ensemble theory explain

Answer 24

Explains how we notice similarities among objects
Robust to kiss of individual neurons
Accounts for ability to recognise novel objects

Question 25

What does the extrastriate body area respond to - downing 2001

Answer 25

Pictures if human body

Question 26

What does the parahippocampal place area respond to - Epstein & kanwisher

Answer 26

Pictures of houses/ scenes