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PSY 654 > Lecture 2 > Flashcards

Lecture 2 Flashcards

1
Q

What does the brain do?

A
  • controls everything we do
  • regulates sleep wakefullness
  • regulates breathing, eating
    -sense/cognition/behaviour
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2
Q

What does the Pons nucleus do?

A

keep our bodies paralyzed as we dream, so we dont act out our dreams

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3
Q

Which part of the brain is earliest to evolve?

A

The brain stem

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4
Q

What is the pons nuclues?

A

Bundle of neurons that regulat sleep and wakefullness

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5
Q

What is temporal lobe responsible for?

A

Memory

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6
Q

What does the parietal lobe do?

A

creates a mental representation of physical space

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7
Q

what happens if you have parietal legions

A
  • you only do stuff half way
  • eat half of your plate
  • dress half of your body
  • shave half of face
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8
Q

What is Visual negelct

A
  • When you see half of a mental image
  • bump into things
  • patient can’t deal with left side of the world
  • affects memory
  • unintionally ignoring one part of the space around them.
  • “focus too hard on one side”
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9
Q

Basic organization of brain

A
  • 100 billion neurons
  • communicate using neuro chemical info
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10
Q

Are neurons connected to each other?

A

No!

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11
Q

What does the Cell body do?

A

“The brain of the neuron”
- controls its activities
- keeps it alive.

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12
Q

What are dendrites?

A
  • receive signals from other neurons
  • bring the information into the cell body
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13
Q

What does the Axon do?

A
  • Sends messages away from the neuron to other neurons, muscles, or glands
  • The message travels down the axon like an electrical signal.
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14
Q

What is the synpase?

A

tiny gaps that the message passes through

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15
Q

Who was santiago Ramon Y cajal?

A

Cajal showed that the brain is made up of individual cells called neurons.
known as the “neuron doctrine.

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16
Q

Who was Edgar Adrian?

A

Used Microelectrodes to discover the action potential and length of axon

17
Q

What rate do axons fire at?

A

They all fire at the same rate (1 milliisecond, just diffrent frequency

18
Q

When a neuron is activated what happens?

A
  • Sodium (Na⁺) rushes into the cell, making it temporarily positive inside. - This is the “flip” in charge, called depolarization.
19
Q

What happens AFTER a neuron is activated

A

Afterward, potassium (K⁺) flows out, making the inside negative again, called repolarization.

20
Q

representation of the brain

A
  • Diffrent Neurons are sensitive to diffrent aspects of out experiences

ex. ther are individual neurons that process every hue, linear orientation.

21
Q

Who discovered Brain representation

A

David Hubel, Thorsten wiesel)

22
Q

What did Felleman and Van Essen discover?

A
  • each box is a subregion
  • occipital lobe; proces seperate things
  • each line is a pathway
23
Q

What happens when the brain recieves information? (complex stimuli)

A
  • information is pushed in bits to temporal lobe
  • the temporal lobe puts it all together
24
Q

Who discoevered the complex stimuli theory?

A

Charles Gross

25
Q

What is the fusiform bundle?

A

a bundle of neurons that helps us recognize faces

26
Q

What are the three theories for recognizing faces?

A
  • specificity
  • population coding
  • space coding
27
Q

What does specificty ?

A

For each face, there’s a specific neuron.

28
Q

What is population coding?

A
  • each neurons picks up specific feutures in face, whole bundle finds out together
29
Q

What is space coding?

A
  • similar to population coding
  • expcept not all the neurons have to envoloved
    because of diffrent charactersitics
30
Q

What is prosopognosia?

A
  • inability to recognize faces
31
Q

Where is the general knowledge of the world located?

A

In the anterior temporal lobe

32
Q

What does MRI have the ability to do?

A
  • Measure the bloodflow in the brain
  • blood rushes to the part of the brain that was used

PSY 654 (10 decks)

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