VL 2 - The Eye, Visual, Color And Depth Perception at Leuphana Universität | Flashcards & Summaries

Lernmaterialien für VL 2 - The eye, visual, color and depth perception an der Leuphana Universität

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The rods are receptor cells in the retina that account for vision in bright light.


Is this true

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False

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The cones mainly concern color and detail perception.


Is this true

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True

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The retinal ganglion cells provide the output signal from the retina. 


True or false? 

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True 

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The retinal ganglion cells provide the inout signal to the retina. 


Is this true or false?

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True 

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What is the rod-cone-break

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The threshold/point where change is noticeable in visual sensation in the dark.

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What is the receptive field?

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Part of the eye. 

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What are on center cells

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They fire when the light is only on the cell's center.

They don't react when the surrounding is lit

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What are off center cells

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They fire rapidly when the light is on the surrounding

However, they don't fire when the light is directly on the center

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What are the three steps from the eye to the cortex

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Reception 

Absorption of physical energy 

Transduction 

Physical energy is converted into an electrochemical signal in the neurons 

Coding 

One-to-one correspondence between aspects of physical stimulus and neuronal activity 

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Why does the ganglion cell receive input only from rods in dim-light conditions? 

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Because the rods are situated better in order to still extract some light, even from dim light. 

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What is the binding-problem

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"How the brain brings together what it has processed".


The problem of how information that are processed in different brain areas are brought together. 


-- also see: Functional specialization theory -- 

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What is an influential approach to solve the binding problem

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The binding-by-synchrony hypothesis

- It hypothesizes, that different detectors fire in synchrony 

- However, it remains unclear how and why this occurs

- It is somewhat implausible that a precise synchrony is achievable across visual processing areas 

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Q:

The rods are receptor cells in the retina that account for vision in bright light.


Is this true

A:

False

Q:

The cones mainly concern color and detail perception.


Is this true

A:

True

Q:

The retinal ganglion cells provide the output signal from the retina. 


True or false? 

A:

True 

Q:

The retinal ganglion cells provide the inout signal to the retina. 


Is this true or false?

A:

True 

Q:

What is the rod-cone-break

A:

The threshold/point where change is noticeable in visual sensation in the dark.

Mehr Karteikarten anzeigen
Q:

What is the receptive field?

A:

Part of the eye. 

Q:

What are on center cells

A:

They fire when the light is only on the cell's center.

They don't react when the surrounding is lit

Q:

What are off center cells

A:

They fire rapidly when the light is on the surrounding

However, they don't fire when the light is directly on the center

Q:

What are the three steps from the eye to the cortex

A:

Reception 

Absorption of physical energy 

Transduction 

Physical energy is converted into an electrochemical signal in the neurons 

Coding 

One-to-one correspondence between aspects of physical stimulus and neuronal activity 

Q:

Why does the ganglion cell receive input only from rods in dim-light conditions? 

A:

Because the rods are situated better in order to still extract some light, even from dim light. 

Q:

What is the binding-problem

A:

"How the brain brings together what it has processed".


The problem of how information that are processed in different brain areas are brought together. 


-- also see: Functional specialization theory -- 

Q:

What is an influential approach to solve the binding problem

A:

The binding-by-synchrony hypothesis

- It hypothesizes, that different detectors fire in synchrony 

- However, it remains unclear how and why this occurs

- It is somewhat implausible that a precise synchrony is achievable across visual processing areas 

VL 2 - The eye, visual, color and depth perception

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