Deck 5: The Visual System

Question 1

What is a double dissociation of function? How has it been important in cognitive neuroscience?

Answer 1

not answered

Question 2

If an individual had a difficult time following directions on a map, but could point to the locations on his own body corresponding to the analogous part of a mannequin, his impairment would be with an _____ frame of reference.

Answer 2

Allocentric

Question 3

Describe the difference between a type and a token. Give an example of each.

Answer 3

Type = object category (e.g., "cats"); token = specific exemplar (e.g., your mother's cat). See Electrophysiological recordings in temporal cortex

Question 4

Name two properties of neurons in IT that make them particularly well-suited for involvement in object recognition.

Question 5

What is the binding problem?

Question 6

What is the "aperture problem" in early visual areas? How might it be solved by feedback?

Question 7

Between the inferotemporal cortex and posterior parietal cortex, which is more likely to process information about what an object is?

Question 8

What is the STP and why is it given that name?

Question 9

Describe the theory of a hierarchy of stimulus representation in the visual system.

Question 10

Describe an alternative, distributed view to higher-level object recognition that does not invoke specific feature detectors for individual people, such as your grandmother.

Question 11

Name two side effects of lesioning the magnocellular pathway.

Question 12

Which anatomical pathway sends information through the following regions:
V1 -> V2 -> V4 -> IT?

Question 13

What is the "grandmother cell theory," and why is it problematic?

Question 14

Why are large receptive fields beneficial to object recognition?

Question 15

In terms of object categorization, your pet cat is a token.

Question 16

Which is NOT characteristic of invariances that are typically observed in neurons in IT cortex?

A)Invariance to an object's location in the visual field
B)Invariance to the size of the object as projected on the retina
C)Invariance to the identity of the object
D)Invariance to changes in illumination of the visual scene

Question 17

Visual illusions provide evidence that the visual system must include what during processing?

Question 18

In vision, the _____ pathway is also referred to as the "where" pathway and the _____ is also referred to as the "what" pathway.

A)Dorsal-stream; ventral-stream
B)Ventral-stream; dorsal-stream

Question 19

What is the difference between an egocentric and an allocentric frame of reference?