Brains Scans

Question 1

How are neurostimulation tools safe and non-invasive

Answer 1

Because we sue a metal rod that hovers over scalp rather than piercing the skin

Question 2

How does a TMS or tDCS work

Answer 2

They manipulate the amount of firing neurons in a section of the brain to see the impact it has as they can decrease or increase the excitability

Question 3

What is the procedure of a TMS and tDCS

Answer 3

A electronic field coil is moved around the head to manipulate electrical current in the brain

Question 4

What are the problems with single cell recording

Answer 4

It’s invasive, can only be done on animals, not sure if findings would apply to humans

Question 5

What are the problems with lesion

Answer 5

People are affected differently - hard to identify a brain region, case studies don’t represent all of pop.

Question 6

What are the contributions of the neuroimaging techniques

Answer 6

It allows us to view the structure and processes of the brain, allows us to study animal brain which is important for the development of biological and psychological sciences that’s one based on animal models

Question 7

What is the deviation for psychological process

Answer 7

It is the changes in electrical supple and changes in blood supply

Question 8

What are MRI & EEG’s used for

Answer 8

Neuroimaging/mapping

Question 9

What kind of relationships does TMS and tDCS measure

Answer 9

Casual relationships

Question 10

What are sMRI’s

Answer 10

Static MRI’s

Question 11

What are fMRI’s

Answer 11

Functional MRI’s

Question 12

How much radiation does an MRI radiate

Answer 12

0

Question 13

What do MRI’s rely on to collect data from brain scans

Answer 13

Correlation between neural activity and cognitive processes so they can’t infer causal relationships

Question 14

What is the magnetic field measured in for MRI’s

Answer 14

Tesla

Question 15

What are the typical intensities of MRI scanners

Answer 15

1.5T, 3T and 7T

Question 16

What are hemodynamic changes

Answer 16

Blood flow changes

Question 17

What specifically in blood does an MRI measure

Answer 17

The amount of oxygen carried

Question 18

Do MRI’s directly or indirectly measure Brain activity

Answer 18

Indirectly, it assumes that firing neurons need more oxygen

Question 19

Do MRI’s have good spatial or temporal resolution

Answer 19

Spatial

Question 20

Do sMRI’s or fMRI’s have a better picture resolution

Answer 20

-sMRI’s

Question 21

How long does it take to do a sMRI’s

Answer 21

8 mins

Question 22

What do EEG’s measure

Answer 22

Significant voltage fluctuations from neuronal activity

Question 23

Do EEG’s have better spatial or temporal resolution

Answer 23

Temporal

Question 24

Are EEG’s based on correlation

Answer 24

Yes

Question 25

What is neural plasticity

Answer 25

The way the brain changes its structure due to experience

Question 26

What is neuronal flow

Answer 26

Strengthens or weakens nerve connections, adding new cells, increase in info = potentiation, decrease of info = depression

Question 27

Can neuroplasticity happen at the synapses

Answer 27

Yes

Question 28

How does TMS work

Answer 28

Picks up electrical currents using a electrical field

Question 29

Does the rotation make a difference in TMS

Answer 29

Yes

Question 30

What is MEPS

Answer 30

The primary motor cortex

Question 31

Can TMS modulate plasticity

Answer 31

Yes

Question 32

Can TMS fix depression

Answer 32

Yes

Question 33

What are the side effects of TMS

Answer 33

Headaches, painful, bad sounds, fatigue, seizures

Question 34

What does tDCS stand for

Answer 34

Transcranial current stimulation

Question 35

How is tDCS softer than TMS

Answer 35

It has a weaker threshold

Question 36

Does cathodal increase or decrease threshold

Answer 36

Increase

Question 37

What does the hippocampus exert strong regulation over

Answer 37

The HPA axis and cortisol output

Question 38

What is a larger amygdala associated with

Answer 38

Mental disorders and difficulties in emotional responding