Semester 1 Module 11 - Bio Methods Flashcards

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1
Q

What is EEG?

A

Electroencephalography. Records postsynaptic voltage changes.

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2
Q

What are the EEG frequency bands from most to least tight?

A
Gamma = sensory processing, consciousness
Beta = alertness, anxiety, movement preparation
Alpha = relaxation, drowsiness, internal attention
Theta = memory, language
Delta = deep sleep, anaesthesia
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3
Q

What are some clinical applications of EEG?

A

Epilepsy, and various sleep issues such as narcolepsy and insomnia.

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4
Q

What are some pros and cons of EEG?

A

Pros- excellent temporal resolution, distinguish timing of different processes, low cost, mostly mobile
Cons- poor spatial resolution, number of individual trials needed for averaging, movement artefacts.

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5
Q

What is PET?

A

Positron Emission Tomography.

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6
Q

What are some pros and cons of PET?

A

Pros- widely used in oncology, identify areas of activity with cognitive processes, examination of neurotransmitter systems.
Cons- radiotracer is radioactive, high cost.

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7
Q

What is MRI?

A

Magnetic Resonance Imaging.

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8
Q

What are some pros and cons of MRI?

A

Pros- excellent spatial resolution, noninvasive and does not involve radiotracers.
Cons- informs structure not function, lengthy scanning time, expensive, not suitable for young children or people with metal implants.

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9
Q

What is an fMRI?

A

functional Magnetic Resonance Imaging.

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10
Q

What are some pros and cons of fMRI?

A

pros- excellent spatial resolution.

cons- poor temporal resolution, concerns over multiple comparisons.

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11
Q

What does an EEG measure?

A

postsynaptic voltage changes.

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12
Q

What EEG frequency is associated with memory?

A

Theta.

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13
Q

What did the London Taxi Driver Study find?

A

That the posterior hippocampus supported spatial navigation.

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14
Q

What does fMRI measure?

A

blood oxygenation.

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