Unit 3

Question 1

what is a null hypothesis

Answer 1

the hypothesis that there will be no statistical results from an experiment.

Question 2

what is effect size?

Answer 2

how meaningful the relationship of the variables is based on what size of the group is influenced.

Question 3

what is the scale of effect size?

Answer 3

0 - 1 where 1 is very significant

Question 4

CT

Answer 4

2D x-ray image of the brain that uses radiation. good at detecting abnormalities i.e. stroke, clots

Question 5

MRI

Answer 5

magnetic field that takes clear, 3D image

Question 6

DTI

Answer 6

measures white matter (pale brain tissue) to identify injuries

Question 7

fMRI

Answer 7

identifies oxygen in the brain, since the brain requires oxygen to undergo processes. a higher oxygen level indicates greater activity.

Question 8

EEG

Answer 8

electrodes are externally attached to non-invasively examine brain on surface level

Question 9

PET

Answer 9

examines radioactive glucose to see what areas of the brain are active during tasks

Question 10

TMS

Answer 10

electromagnetic pulse disrupts brain to see what areas are affected

Question 11

name methods of neuroimaging

Answer 11

CT, MRI, fMRI, DTI, TMS, PET, EEG

Question 12

afferent neurons vs efferent neurons

Answer 12

afferent: moves signal from peripheral system to central system

efferent: move signal from central system to peripheral system

Question 13

what parts are in the hindbrain?

Answer 13

medulla, pons, cerebellum, reticular formation

Question 14

what parts are in the midbrain?

Answer 14

substantia niagra

Question 15

what parts are in the forebrain?

Answer 15

thalamus, hypothalamus, hippocampus, amygdala, pituitary gland, basal ganglia

Question 16

how does an electrical signal move?

Answer 16

signal moves to the dendrite. if strong enough, it moves down the cell body to the axon. then, it moves to the terminal button.