Lecture 8: Structural brain changes in sz

Question 1

What is the difference between grey matter and white matter?

Answer 1

Grey matter: cell bodies that make up the cortex

White matter: cell axons that connect neurons

Question 2

Nuclei are groups of ______ which are important as sites of _______ production

Answer 2

• groups of cell bodies

- neurotransmitter production

Question 3

What are tracts?

Answer 3

bundles of axons connecting different regions

Question 4

What are the two types of images that can be produced with a Structural Magnetic Resonance Imaging (MRI)?

Answer 4

1) T1 images show grey and white matter

2) DTI images show white matter connections

Question 5

What are the two measurements from an MRI?

Answer 5

FA and Trace

Question 6

What does FA measure?

Answer 6

how thick or dense are connections

Question 7

What does Trace measure?

Answer 7

how spread out are connections

Question 8

When FA numbers are high, is that good or bad?

Answer 8

High numbers are good

Question 9

When Trace number are high is that good or bad?

Answer 9

High numbers are bad