Brain Blood Flow and Exercise W6

Question 1

How is a stroke caused?

Answer 1

Over or under perfusion

Question 2

What are the functional consequences of blood flow to and within the brain?

Answer 2

Performance
Cognitive function
Impairment linked with disease/conditions
Prognostic value

Question 3

What offsets the natural age-related decline in brain blood flow?

Answer 3

Habitual exercise

Question 4

What are brain perfusion imaging techniques?

Answer 4

Arterial spin labelling (ASL)
Phase Contrast Angiography
MRI

Question 5

What does a transcranial doppler measure?

Answer 5

Measures blood velocity as an index of the flow

Question 6

What does NIRS (Near-Infrared Spectroscopy) measure?

Answer 6

Measures the balance of oxygen supply and oxygen demand directly at a capillary level in the cerebral cortical tissue

Gives us a measure of brain activation (neurovascular coupling)

Is portable and robust

Question 7

What is brain blood flow highly sensitive too?

Answer 7

Changes in arterial partial pressure of carbon dioxide (PaCO2)

Question 8

NEED TO FINISH