L15- Parietal Lobe

Question 1

What are the learning objectives for understanding the parietal lobes?

Answer 1

Understand the behavioral effects of damage to the parietal lobe

*	Understand the mechanisms underlying contralateral neglect

Question 2

What are the effects of left parietal lobe damage?

Answer 2

Agraphia (difficulty in writing)

*	Acalculia (difficulty in mathematical calculations)
*	Right/left confusion
*	Dyslexia (difficulty in reading)
*	Difficulty in drawing (details)

Question 2

What clinical tests are used to diagnose contralateral neglect?

Answer 2

Line cancellation and letter cancellation tests

*	Line bisection test

Question 3

What are some general effects of damage to the parietal lobe?

Answer 3

Impairments in integrating sensory information

*	Impairments in the control of movement
*	Impairments in guiding movements to points in space
*	Impairments in abstract concepts
*	Impairments in directing attention
*	Impairments in processing spatial information

Question 3

What is contralateral neglect?

Answer 3

Contralateral neglect is a condition where a person neglects one side of their body or space, typically resulting from damage to the right parietal lobe.

Question 4

What are the effects of right parietal lobe damage?

Answer 4

Difficulty in recognizing unfamiliar views of objects

*	Difficulty in drawing (overall shape)
*	Contralateral neglect (neglect of the opposite side of the body/space)

Question 5

What did the Driver, Baylis, Goodrich, & Rafal (1994) study investigate?

Answer 5

The study investigated whether patients could recognize the direction triangles were pointing (e.g., 2 o’clock, 6 o’clock, or 10 o’clock) to understand object-centered neglect.

Question 6

Is neglect pre-perceptual or post-perceptual?

Answer 6

The debate includes the burning house anecdote and the Milan Piazza experiment, suggesting both ego-centered (based on the individual’s perspective) and object-centered (based on the object’s intrinsic properties) neglect.

Question 7

What is agraphia and which side of the parietal lobe is it associated with?

Answer 7

Agraphia is the difficulty in writing, associated with damage to the left parietal lobe.

Question 8

What is acalculia and which side of the parietal lobe is it associated with?

Answer 8

Acalculia is the difficulty in performing mathematical calculations, associated with damage to the left parietal lobe.

Question 9

What type of neglect results from right parietal lobe damage, and what does it involve?

Answer 9

Contralateral neglect results from right parietal lobe damage and involves neglecting the left side of the body or space.