Deck 6: Spatial Cognition and Attention

Question 1

What is the distinction between attention and intention?

Answer 1

not answered

Question 2

To what visual properties are place cells sensitive?

Answer 2

The organism's location in an environment

Question 3

How does extinction in neglect provide evidence for competition?

Answer 3

not answered

Question 4

What is unilateral neglect? List three symptoms that might accompany this disorder.

Question 5

Give an example of a coordinate transformation that might take place to guide action.

Question 6

In what way are H₂¹⁵0 PET imaging and fMRI different?

A)PET is typically based on measuring an intrinsic signal, blood oxygenation, whereas fMRI is based on the uptake of a contrast agent
B)fMRI is typically based on measuring an intrinsic signal, blood oxygenation, whereas PET is based on the uptake of a contrast agent

Question 7

In attention, what is a "baseline shift"? Is it additive or multiplicative? What evidence is there for it?

Question 8

What is a saccade?

Question 9

Why is the posterior parietal cortex particularly well-suited for performing coordinate transformations between attention and intention?

Question 10

Gain modulation is additive.

Question 11

Contrast overt and covert attention

Question 12

The allocation of spatial attention is more closely associated with _____ ; whereas the allocation of object-based attention is more closely associated with _____.

A)A baseline shift in neural activity; a selection negativity
B)A selection negativity; a baseline shift in neural activity

Question 13

Physical space that is within reach is referred to as _____personal space.

Question 14

What region of the brain is most closely linked to allocentric representations of space?

A)Posterior parietal cortex
B)The frontal eye fields
C)Hippocampus

Question 15

In what way are H₂¹⁵0 PET imaging and fMRI similar?

A)Both can be used to measure changes in brain activity in response to performing a cognitive task
B)Both can be used to measure brain anatomy

Question 16

Name two of the three brain regions that have been implicated in hemispatial neglect.

Question 17

What is lateral inhibition? What role might it play in attention?

Question 18

If I look to an object in the process of attending to it, I am demonstrating _____ attention.

A)Overt
B)Covert

Question 19

In patients with unilateral neglect, what is extinction?

Question 20

What two types of saccades are coded by populations of neurons in the posterior parietal cortex (PPC)?

Question 21

What is the biased-competition mechanism of attention?