wk 2 VISION

Question 1

What do areas MT and MST have in common?

Answer 1

They both generate motion percepts

Question 2

Which stream includes V1 and the inferior temporal lobe, and is associated with vision for perception?

Answer 2

The ventral ‘what’ stream

Question 3

Which stream includes V1 and the parietal lobe (and other visual areas), and is associated with vision for action?

Answer 3

The dorsal ‘where’ stream

Question 4

Name the order of cells at the back of the eye beginning w photoreceptors

Answer 4

Photoreceptors, horizontal cells, bipolar cells, amacrine cells and ganglion cells

Question 5

Which stream (ventral or dorsal) is associated with spatial relationships?

Answer 5

Dorsal stream

Question 6

Which stream (ventral or dorsal) is associated with form and colour perception?

Answer 6

Ventral stream

Question 7

The fMRI effect described below is known as:

“if the 2nd repetition causes suppression, then the stimulus must share a process supported by that region”

Answer 7

fMRI adaptation

Question 8

The LGN is in which part of the brain?

Answer 8

The thalamus

Question 9

V1- which layer receives axons from the thalamus?

Answer 9

Layer 4

Question 10

V1- which layers project to occipitol, parietal and temporal extrastriate cortical areas and back to the thalamus?

Answer 10

Layers 1 &5

Question 11

Visual topographic information is present at which levels of the visual pathway?

Answer 11

Retina, thalamus and V1

Question 12

What is the objective physical

correlate of lightness and brightness?

Answer 12

Luminance

Question 13

Which 3 percepts combine to create what we think of as colour?

Answer 13

Hue, saturation (degree to which grey is approached) and brightness

Question 14

Which technique measures radiowaves as protons gradually return to their original configuration within the magnetic field, releasing the energy?

Answer 14

MRI

Question 15

How often does sampling occur during fMRI?

Answer 15

Every 2-3 seconds

Question 16

A patient is unable to name objects but can accurately put a letter in the postage slot. She likely has damage to her____, with lesions directly over the____

Answer 16

ventral stream, LOC (lateral occipital cortex)

Question 17

Which part of the visual cortex features retinotopic (topographic) mapping and orientation-preference (respond to ‘low level’ stimulus)?

Answer 17

V1

Question 18

Reflectance, illumination and transmittance all result in _______, which represents the inverse problem.

Answer 18

Luminance

Question 19

The same reflected wavelengths appear to be different in colour depending on surroundings, this is called colour ______

Different w.lengths appear to be the same colour, this is called _________

Answer 19

Colour contrast, constancy

Question 20

Neural interactions of CNS which happen before activity reaches the cerebral cortex is called _______ processing

Answer 20

subcortical

Question 21

Arrange in the correct order: optic chiasm, superior colliculus (orients head & eye m.ments), V1, optic tract, LGN, retina, optic radiation, optic nerve

Answer 21

Retina, optic nerve, optic chiasm, optic tract, superior colliculus, LGN, optic radiation, V1

Question 22

fMRI adaptation experiments are looking at which part of the brain? (Think object form processing)

Answer 22

LOC- Lateral occipital complex