Concepts of brain function Flashcards

1
Q

Explain the nervous system of simple creatures

A

Reflexes only

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2
Q

How has increased complexity come about?

A

Evolution

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3
Q

What does the brain allow for?

A

Modulation of reflexes

Independent sensory and motor function

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4
Q

Describe the sensory function of the brain?

A

Reception vs. perception
Giving information meaning
Storage of information (memory)

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5
Q

Describe the motor function of the brain?

A

Decision-based activity

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6
Q

How does information get in and out of the brain?

A
Individual pathways (tracts) for sensory and motor
Multiple pathways for sensory and motor
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7
Q

Where in the brain does information go?

A

To the relevant cortex

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8
Q

How do cortexes and sides of the body relate?

A

The left side of the body is controlled by the right cortex of the brain

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9
Q

What is decussation?

A

The crossing of neurones from the left side of the body to the right and vice versa

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10
Q

What is a cortical heirarchy?

A

The CNS is organised into a cortical heirarchy. The cortex of the brain is the highest in the hierarchy as it has the highest level of function

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11
Q

What is unimodal association?

A

One area of the brain has one role, it deals with one sensory system or part of the body

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12
Q

Explain the relationship with primary and secondary cortex

A

The primary cortex receives information about one thing, e.g. vision
The secondary cortex interprets this information and makes sense of it

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13
Q

Tertiary regions are unimodal or multimodal?

A

Multimodal
They interpret many modalities (including memories and learnt behaviours)
e.g. creating depth and vision

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14
Q

What is cognition?

A

Higher function of the brain

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15
Q

What does cognition include?

A
Planning
Thinking
Language
Memory
Emotions
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16
Q

Where in the brain does cognition take place?

A

It is less obvious

Across the cortex and in subcortical structures

17
Q

How has the brain got the ability to do so much?

A

Multiple neurotransmitters
Multiple receptors
Vast number of input to neurones

18
Q

How many synapses does the average neurone in the brain have?

A

3000

19
Q

What is the connectome?

A

How neurones are connected together

Those that are communicating with one another