Presentation 5th week

Question 1

hemispheres

Answer 1

cortex, highly develop area of the brain (in the forebrain) cortex is outer level of collebrum. collebrum has two halfs we call them hemispheres. each hemisphere has 4 lobes

Question 2

corpus callosum

Answer 2

connecting left hemisphere to right hemisphere.

Question 3

lobes of cortex

Answer 3

frontal lobe, parietal lobe, occipital lobe, temporal lobe

Question 4

frontal lobe

Answer 4

initiates motor activity, responsible for speaking, consciously thinking. most higly developed area of cortex, personality aspects

Question 5

temporal lobe

Answer 5

interprets auditory information, comprehends language, language skills, perceptual judgement

Question 6

parietal lobe

Answer 6

interprets sensory information from skin

Question 7

Occipital lobe

Answer 7

processes visual information

Question 8

primary motor area

Answer 8

between frontal and perietal lobes, initiates motor activity

Question 9

primary somatosensory area

Answer 9

between frontal and perietal lobes, information comes from skin

Question 10

brain imaging techniques

Answer 10

MRI, FMRI, PET, EEG

Question 11

MRI

Answer 11

Compare brain regions magnetic fields, radio frequency energy, structure of the brain

Question 12

FMRI

Answer 12

to compare brain regions when they are actively doing some task, function of the brain, uses oxygen stedus to image to brain. measures how quickly oxygen is consumed by brain cells. Its slower than eeg

Question 13

EEG

Answer 13

which records electric activity in the brain, sleep disorders epilepsy. inexpensive and fast but it cant determine where. measures radioavtiv elements introduced into brain. how drugs affect the brain, alzeheimer

Question 14

PET

Answer 14

Radioavtive substance which is injected to person

Question 15

depression

Answer 15

it is a mood disorder, deep sadness lack of motivation, over active amygdla, smaller hippocampus (effecting the memory and stress regulation)

Question 16

anxiety

Answer 16

large hyperactive amygdla, over active lymbic system. selective serotonin reuptake inhibitors

Question 17

addiction

Answer 17

dopamine releasing on reward pathway, also memory and movement remembering what is good makes it easier to do it again, brain reduces the number of receptors that are able to respond to dopamine, tolerance state in order to reach same level of dopamine you use more