lecture 14 extra striate: MT pathway

Question 1

The “motion after effect” was first noted by who:

A) Sir Isaac Newton
B) Aristotle
C) Hippocrates
D) Galileo

Answer 1

B) Aristotle

Question 2

What is the term for the phenomena in which a person can stare at a moving object (such as a waterfall) then look away and continue to see movement?

Answer 2

The “motion after effect”.

Question 3

True or false: people with normal vision CANNOT experience blindsight?

Answer 3

false

Question 4

Which lobe is responsible for the “motion after effect”

Answer 4

MT (medial temporal lobe)

Question 5

what is akinetopsia?

A) a lesion in the visual cortex that creates a defect in visual motion perception such that the world appears to be in stop-motion

B) a lesion in the visual cortex that creates a defect in visual color perception such that the world appears to exist in only blue and green (ideal for Seahawks fans)

C) a lesion in the visual cortex that creates a defect in visual depth perception such that farther objects appear closer than close objects

Answer 5

A) a lesion in the visual cortex that creates a defect in visual motion perception such that the world appears to be in stop-motion

Question 6

What are the cells called that are responsible for a person’s response to familiar faces (such as Jennifer Aniston)

Answer 6

MT image selective cells
(this seems counter-intuitive since the MT is the “where/motion” side and not the “what/color/shape” side, however this suggests that MT and V4 communicate.)

Question 7

Why is it thought that MT image selective cells are found in the MT?

Answer 7

Facial recognition happens in V4 and also communicated to the “magno/motion” side for quick response to danger. The hippocampus is also found in the MT which is responsible for organizing memories

Question 8

visual neglect happens due to injury to what lobe?

Answer 8

superior temporal lobe