Suggested solutions - multiple choice

[anonuser0511]

so have we established answer to Q39?
A or D

[jsher098]

so have we established answer to Q39?
A or D

It's D as A isn't entirely correct. Never any movement of the muscles in too extreme.
Their is little activity of the muscles. It is not like you are 100% paralyzed. Muscles are atonic ... but there still is a bit of movement. I verified this with my teacher!

[travyc]

Couldn't 18 also be A) Justice? Several of the
patients cannot speak English. Dr Hart translates the consent document into the patients' first langua;ge and
ensures that it is fully explained to the patients before asking them if they wish to participate.

Since he is ensuring no one is being discriminated against and are allowed to partake in the experiment?

[anonuser0511]

so have we established answer to Q39?
A or D

It's D as A isn't entirely correct. Never any movement of the muscles in too extreme.
Their is little activity of the muscles. It is not like you are 100% paralyzed. Muscles are atonic ... but there still is a bit of movement. I verified this with my teacher!

damn -1

[jess3254]

No, all of them are incorrect in some way.

fMRI uses magnets. That's what the M stands for. An fMRI uses the same base technology as an MRI. An fMRI takes a lot of MRI, but it still uses the same magnetic principle.

This is on a fMRI safety warning.

"Safety is a very important issue in all experiments involving MRI. Potential subjects must ensure that they are able to enter the MRI environment. Due to the nature of the MRI scanner, there is an extremely strong magnetic field surrounding the MRI scanner (at least 1.5 teslas, possibly stronger). Potential subjects must be thoroughly examined for any ferromagnetic objects (e.g. watches, glasses, hair pins, pacemakers, bone plates and screws, etc.) before entering the scanning environment."

So technically they are all wrong and the question should be omitted.

Read the question carefully:

Zoe, an elderly woman with a pacemaker needs to have a brain scan to investigate a possible brain abnormality. If her neurosurgeon wants to investigate the funtion of Zoe's brain, but avoid using invasive injections, which would be the best technique:

CANNOT be MRI or fMRI due to pacemaker.
CANNOT be PET as it involves the injection of a radioactive glucose solution into the bloodstream.
brain scan to investigate a possible brain abnormality- CT provides information on the size and location of brain abnormalities- CT is the best possible answer- not the best question but my teacher is an examiner and she has told me its not being taken off the exam. the thing with some multiple choice questions is to select the BEST POSSIBLE ANSWER- might not be 100% correct- but it is more correct than the other three alternatives

Please note the question said FUNCTION.

But how would your teacher know? What tripe. She wouldn't know until the VCAA meeting next week. But, no it won't be taken off the exam, but they may have to accept 2 answers.

[EMILLY]

possible for short answer sggested responses???

[sophx]

i think there are many questions we will never be certain about untill we get our results unfortunately.

[Saraime2003]

according to your answers i got:
17/18 for Brain and Nervous System (if Q13 is ambiguous will they give us all the mark?- none of the answers are right)
13/13 for Visual Perception
10/13 for States of Consciousness (assuming Q39 is D lol)
i hate SOC. lol go die.
so thats like 40/44 - worse than my practice exams. thats poo. i hope i aced the SA. lol

Aimee

[sarahss_]

UGHH I wanna redo my exam thier were a few questions where I had the right answer but doubted myself and over complicated things!! Im just praying I didint change them and ended with the right answer.
4 MCQ wrong so far and I know for SA I stuffed up quite a bit.
Hoping for an A on this exam.

[Saraime2003]

i want atleast a B+ n this so hopefully i didnt drop too many marks in SA

Aimee

[Glockmeister]

No, all of them are incorrect in some way.

fMRI uses magnets. That's what the M stands for. An fMRI uses the same base technology as an MRI. An fMRI takes a lot of MRI, but it still uses the same magnetic principle.

This is on a fMRI safety warning.

"Safety is a very important issue in all experiments involving MRI. Potential subjects must ensure that they are able to enter the MRI environment. Due to the nature of the MRI scanner, there is an extremely strong magnetic field surrounding the MRI scanner (at least 1.5 teslas, possibly stronger). Potential subjects must be thoroughly examined for any ferromagnetic objects (e.g. watches, glasses, hair pins, pacemakers, bone plates and screws, etc.) before entering the scanning environment."

So technically they are all wrong and the question should be omitted.

Read the question carefully:

Zoe, an elderly woman with a pacemaker needs to have a brain scan to investigate a possible brain abnormality. If her neurosurgeon wants to investigate the funtion of Zoe's brain, but avoid using invasive injections, which would be the best technique:

CANNOT be MRI or fMRI due to pacemaker.
CANNOT be PET as it involves the injection of a radioactive glucose solution into the bloodstream.
brain scan to investigate a possible brain abnormality- CT provides information on the size and location of brain abnormalities- CT is the best possible answer- not the best question but my teacher is an examiner and she has told me its not being taken off the exam. the thing with some multiple choice questions is to select the BEST POSSIBLE ANSWER- might not be 100% correct- but it is more correct than the other three alternatives

CT can not examine function at all (on its own anyway). To be honest, I suspect they are going to have to give multiple correct answers or just get rid of the question altogether.

[jessek]

the definitive answer to question 13 is PET scan because the radioactive substance can be ALSO be taken ORALLY, and it's original purpose was looking at brain abnormalities.

too bad i only realized this after the exam..

[jsher098]

MY ANSWERS


Brain and Nervous System
1a 2b 3d 4c 5d 6d 7b 8d 9c 10c 11c 12c 13a 14d 15d 16a 17b 18d

Visual Perception
19b 20b 21d 22a 23d 24a 25a 26c 27d 28a 29b 30a 31a

States of Consciousness
32a 33a 34b 35b 36a 37d 38b 39d 40a 41a 42d 43d 44d

BRAIN AND NERVOUS SYSTEM

Question 1: Broca's area, left frontal lobe
Question 2
a- Cannot name the object as seen in the left hemisphere- corpus callosum is severed so cannot be sent over to the right hemispshere for recognition
b- Can point with their right hand
c- cannot name the object
d- can point with their left hand (as right hemisphere controls left side of the body)

Question 3
- Self inflicted pain during control questions can artificially elevate ones baseline level
-A guilty person will show similar physiological arousal when relevant questions are asked in comparison to control questions due to them self inflicting pain which increases physiological arousal.
- A guilty person could be considered innocent as they show similar physiological arousal to relevant and control questions.

Question 4
A- Sympathetic
B- Increased heart rate, increased blood pressure
C- More blood flow to arms and legs which prepares Alyse to either escape (flight) or confront (fight) the threat.

Question 5
A
- CT uses X-rays to take pictures of your brain from different angles
- Series of X-rays are then used to make a cross section (slice) of the brain
B- CT scan repeats are limited due to the X-rays. MRI scan repeats are ok.
C- Difficulty with complex mental functions. e.g. planning, analysing, reasoning

Question 6
A- David could feel depressed.
B- The sympathetic nervous system inhibits digestion as it directs its resources to the more important task of fighting and adapting to the stressor.

VISUAL PERCEPTION
Question 7
a- draw the second balloon closer to the horizon
b- Closer trees have more perceptible detail and the more distant trees have decreasing perceptible detail

Question 8
Size constancy is the tendency to perceive an object as maintaining its size despite any changes that occur to the size of the image cast on the retina.
When we are crossing a road, we perceive the cars in the distance as maintaining their size- remaining constant size and do not see them as just small objects and start walking.

Question 9
a- Perceptual set is the readiness to perceive a stimulus in a particular way which leads you to focus on some aspects while ignoring others (selection).
b i- Context
b ii- If you see a man running on the street with a gun you feel scared. But if you see a security guard with a gun outside of a bar, you feel safe and secure.

Question 10
a- Occurs when the actual perception is in conflict with the 'objective' reality.
b- The line with the feather tails is seen as longer than the line with the conventional arrowheads.
Perceptual compromise- overall lengths of the figures are unequal and distance between the tips is unequal.

Question 11

A- Selection of participants wasn't random- not every member of the population had an equal chance of being chosen to take part in the study. Not representative of the population.
B- Not done randomly. Participants did not have an equal chance of being placed into the experimental and control groups.

STATES OF CONSCIOUSNESS
Question 12
Cognitive change: Jim's thought processes may be disorganised and less logical.
Perceptual change: Jim's sensory thresholds including pain may either be heightened or lowered.

Question 13
A i- Detects, amplifies and records electrical activity in the muscles near the eye.
A ii- Detects, amplifies and records electrical activity in the brain.

B- Little or no electrical activity (Non Rapid Eye Movement Sleep)

C- Sleep spindles- brainwaves of high bursts of frequency
  - K Complexes-brainwaves of high bursts of amplitude

D- The time spent in REM increases as the night goes on.
  - Nightmares occur during REM sleep so are most likely to occur towards the morning as that is when we spend more time in REM Sleep than at the beginning of the night.

Question 14
A- Participants involved in both the experimental and control conditions.
Experimental- meditate before bed
Control- no meditation before bed

B- Eliminates the effects of individual differences. In an independent groups design, participant characteristics may cause bias between groups.

Question 14
C- Be informed of the nature of the research.
  - The risks and the requirements.

[vexx]

Question 41
Mel is suffering from hypersomnia.
He is likely to
A. fall asleep immediately upon going to bed.
B. have difficulty falling asleep upon going to bed.
C. experience sudden REM sleep episodes during wakeful periods of the day.
D. experience sudden NREM sleep episodes during wakeful periods of the day

To the above, the correct answer is A, the poster above me thought that it was B but that is actually insomnia not hyperinsomnia

[sir0004]

Q 35 is definitely not B; it is C....i asked my teacher that ....the more different the tasks are the more easy it is to carry out. Difficult and simple are opposites; hence easier to carry out.
everything else is correct. does everyone agree?