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Flashcards in Afferent Feedback Deck (10)
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1
Q

Where is the primary sensory cortex located?

A

The anterior parietal cortex (input)

2
Q

What part of the parietal cortex is output?

A

The posterior parietal cortex

3
Q

Who is Picard?

A

A scientist that found neurons sensitive to certain stimuli (eg. texture, weight or grip force)

He found that some neurons were sensitive to more than one stimulus

4
Q

What properties of the primary sensory layer and association layer of the cortex lead to phantom limbs?

A

The primary sensory layer is plastic but the association layer is hard-wired

This means that even though the primary sensory layer has changed, the association layer still has inputs from the removed part of the sensory layer

5
Q

How is proprioception learnt?

A

The body’s various positions are encoded in neurons in the association cortex of the parietal cortex

6
Q

What are the two pathways of low level visual processing from the retina (in order)?

A
  1. LGN
  2. Primary Visual Cortex
  3. Dorsal stream to posterior parietal cortex or ventral stream to infero-temporal cortex
  4. Superior colliculus
  5. Pulvinar nucleus
  6. Posterior Parietal cortex
7
Q

Is the macula (central vision, contains fovea) binocular or monocular?

A

Binocular

8
Q

What are two myths of vision?

A
  1. You don’t see in 3D (it is created in the brain)

2. You don’t see motion (brain creates it in the visual area MT)

9
Q

What visual processing area of the brain processes motion?

A

MT ( in dorsal stream)

10
Q

What stream of visual processing processes motion?

A

The dorsal stream processes location and motion