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BMS248 Neural Circuits > Stimulus Recognition > Flashcards

Stimulus Recognition Flashcards

1
Q

LGN

A

lateral geniculate nucleus

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2
Q

Layer LGN

A

6 layers

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3
Q

Function of layers in LGN

A

alternate input from each eye

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4
Q

LGN organisation

A

retinotopically

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5
Q

Ganglion cell axon connections

A

1:1 with LGn projection neurons

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6
Q

Thalamic relay station

A

LGN

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7
Q

Receptive fields of LGN neurons

A

similar to receptive fields of retinal ganglion cells

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8
Q

Local interneurons present in

A

LGN

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9
Q

Local interneurons in LGN means

A

processing is occuring

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10
Q

Ventral stream identifies

A

object identity

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11
Q

Dorsal stream identifies

A

object where location

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12
Q

Object recognition includes

A

scale invariance, orientation invariance

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13
Q

How is object recognition studied

A

modeling, electrophysiology, lesions

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14
Q

Complexity neurons ventral stream

A

complexity of responses increases along the ventral stream

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15
Q

Key features of cortical structure

A

layering, columns and blobs

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16
Q

Different layers of cortical neurons corresponds to

A

different neurotransmitter release

17
Q

Columnar organisation in the cortex

A

ocular dominance column, orientation columns, blobs

18
Q

How were ocular dominance columns in visual cortex identified?

A

inject radioactive proline in one eye

19
Q

Ocular column visual cortex input

A

each column receives input from either ipsilateral or contralateral eye

20
Q

Hypercolumn

A

three types of column shown together

21
Q

Hubel Wiesel experiment

A

moving bar

22
Q

TRUE or FALSE - neuron only responds if stimulus in correct orientiation

A

true

23
Q

hypercomplex

A

end stopped complex cell

24
Q

Why is layering important in the cortex

A

process of information

25
Q

Receptive fields downstream of V1 characteristics

A

increased size, increased complexity

26
Q

No of columnar organisation in cortex

A

4

BMS248 Neural Circuits (9 decks)

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