Suggested solutions - multiple choice

[Ripe.Banana]

i lost 7 marks i think. 1 or two on massivly stupid things now that i read the question.

Hopefully i picked my game up in short answer but tbh i dont think i did :S

[ngRISING]

question 43 is C not D.

Sleep talking can only occur during stages 3 and 4 of NREM and never occurs in REM sleep

Sleep Talking does occer in REM

Google is your friend
http://books.google.com.au/books?id=vBg80wEOblIC&pg=PA86&lpg=PA86&dq=sleep+talking+in+REM&source=bl&ots=SfN-kmYRH2&sig=xA63vujtwUohC92AWXPIuP1Wju0&hl=en&ei=VVYvSuGAC5iNkAXLoc2aCg&sa=X&oi=book_result&ct=result&resnum=1

[Ripe.Banana]

Question 13 should be A.

CT uses X-rays.

It can't be PET because of injections, it can't be MRI due to MAGNETIC Resonance Imaging, and it can't be fMRI for the same reason, as well as the fact that injections are used in fMRI too.


Question 17 should be D. The patient MUST be conscious for it to be effective, so therefore mild electrical corrent is MOST correct.

Apart from that it is all good.

The only mark I dropped was on the camouflage question, I misread it and chose A instead of C.

Sigh.

Incorrect to be honest.

CT does not show function and the question asks for function not structure. fMRI does not use magnets, it just detects the oxyegen level in the blood flowing around the brain.  So as stated before the correct asnwer is D

for question 17. you need to read it.

its talking about ESB
D states: electroencephalograph (EEG not ESB) gives a electic current and therefore that asnwer is incorrect do u not agree>

[jess3254]

question 43 is C not D.

Sleep talking can only occur during stages 3 and 4 of NREM and never occurs in REM sleep

No, sleep talking occurs during NREM and REM sleep.

Question 13 should be A.

CT uses X-rays.

It can't be PET because of injections, it can't be MRI due to MAGNETIC Resonance Imaging, and it can't be fMRI for the same reason, as well as the fact that injections are used in fMRI too.

Refer to discussion above and here: http://vcenotes.com/forum/index.php/topic,14345.msg155620.html#msg155620

Question 17 should be D. The patient MUST be conscious for it to be effective, so therefore mild electrical corrent is MOST correct.

Apart from that it is all good.

Unfortunately it's not D. It says "electroencephalograph" in front of it.
Question 17
Which o f the following is the most correct statement about electrical stimulation o f the surface o f the brain?
A. It is a non-invasive method.
B. The patient may be conscious.
C. The electrical current cannot be precisely delivered.
D. The electroencephalograph delivers a mild electrical current.

[jds5350]

question 17 was B. (not D)

Question asks:
which of the following is the most correct satement about the electrical stimulation of the surface of the brain?
A)    it is non invasive
B)    The patient may be conscious
C)    The electrical current cannot be precisely delivered
D)    The electroencephalograph delivers a mild electrical current. -- *NOTE electroencephalogram

[jess3254]

Also, patients don't always need to be conscious during ESB
for e.g. when the primary motor cortex is stimulated, an individual's leg may twitch. They do not need to be awake for this to be observed.

Although yes, generally they are conscious.

[jsher098]

25 is C as that is the best possible answer.

13 is A- can't be c or d due to pacemaker. cant be b due to injection of radioactive glucose solution. so A is the best possible answer.
otherwise all the other answers are good!

[Nelle]

JessieO could question 39 be D?
Because there can be some very slight muscle movement during REM sleep

[jsher098]

JessieO could question 39 be D?
Because there can be some very slight muscle movement during REM sleep

That is correct. It cannot be A because NEVER any movement is incorrcect.
The EMG shows LITTLE activity not completely no activity. You are correct!

[jessie_111]

Ohh I'm so mad i completely misread question 39 hahaha.
Looks like I did ok.. Mainly dropped marks in research methods!
Grrrrrrrr

[jds5350]

i agree that 39 could be D

muscles undergo partial paralysis during REM sleep, therefore less muscular movemennt

[jess3254]

JessieO could question 39 be D?
Because there can be some very slight muscle movement during REM sleep

Yeah, you're right.

[jessie_111]

25 is C as that is the best possible answer.

13 is A- can't be c or d due to pacemaker. cant be b due to injection of radioactive glucose solution. so A is the best possible answer.
otherwise all the other answers are good!

But a CT scan doesn't show function so how can it be a?
And with q 25, it is about size constancy so the viewers perception would not change. so it would be a.

[jsher098]

Question 17 should be D. The patient MUST be conscious for it to be effective, so therefore mild electrical corrent is MOST correct.

No alternative D stated the EEG delivers a mild electrical current.
Thats incorrect... it did not say ESB!!!
so the answer has to be B!



[/quote]

[Ripe.Banana]

LOL at some of you do you read the above posts?

@ jsher. 25 is not C. The perception does not change due to the perceptual constancy of shape and/or size.  It is A

Also as stated before, CT DOES NOT give details about Function which the question is asking so it is fMRI which does not use magnets like MRI.