Mid-year assistance thread

[jess3254]

Question 1 - I was wondering with Ame's Room. Is pretty much everything slanted.... ? Like the floor, roof, and walls.

My understanding is that:
-The floor is slants downwards from the individual who is in the closer corner, to the individual in the corner which is further away (so that the individual who is closer appears more giant.)

-The roof slants upwards from the individual in the closer corner, to the individual which is further away (so it appears that the closer individual is touching the ceiling and is unable to fit.)

Hi,
I'm really confused with the apparent distance theory in explaining ames room, I understand its application in the Muler-Lyer illusion but not ames room,
Could you please explain it... in like really simple terms?
Thanks heaps

They're notoriously difficult to understand, these explanations for visual illusions.
-Both lines produce an image of the same size on the retina
-The attachments to the lines, for some reason or another, cause us to perceive the line with the feather tail as being 'further away' from us than the arrow head line (this is why it's called 'the apparent distance theory' - because we believe the lines are at different distances)
-Remember that both lines produce an image of the same size on the retina. However, we are programmed to know that objects which are further away from us produce an image on the retina which is smaller than the object is in reality.
-Thus, we perceive the line with the feather tail as being larger.

hey jessie0, there was a question about what is the first stage of visual perception and i wrote "selection" because the first stage of visual sensation is "reception" but the answer was "reception"

so how do we know is theyr asking visual perception in general or ..?

thankyou.

Yeah, if they're asking you what the first stage of visual perception is on a VCAA exam, always answer reception. I just realised they don't make a distinction between visual perception and sensation in the 2005 onwards study design, and just call it 'the stages of visual perception'.

Although they may still ask questions which ask you to distinguish/ list processes which occur in the eye and those which occur in the brain. Who knows.

[Poppy M]

Hey Jessie0,
thanks for the reply but could you specify the apparent distance theory to the ames room?
I think you were talking about the Muler-Lyer in that explanation!
Lol it's just that this is the one concept im truely stumpted on and im freaking out!
ta!

[jess3254]

Hey Jessie0,
thanks for the reply but could you specify the apparent distance theory to the ames room?
I think you were talking about the Muler-Lyer in that explanation!
Lol it's just that this is the one concept im truely stumpted on and im freaking out!
ta!

Hahaha! Oh whoops. I'm so sorry. I read that as Muller Lyer *hits self*.

I'll type up an explanation ASAP, check back here shortly

[samikk]

hello im just wondering how would i explain the ames room and muller lyer illusion in the exam to get full marks

[Poppy M]

Also, just to extra particular, would it be okay to say that (as two examples) of Braca's area:

1) Responsible for the articulation and pronounciation of speech

2) Used for understanding complex grammatical functions for example in understanding sentences in which the meaning depends on the grammer

It's just that they seem to primarily focus on the articulation side of Broca's area but as a second feature can u talk about grammer?

just trying to make my answers as accurate (sp?) as possible!

[clauudia]

thanks jessie0,
and regarding the muler lyer post: Theory 1 is because we use closer and therefore the feather tail one is longer compared to the arrow heads
and the apparent distant theory is  perceiving the feather tail as being longer because it is further away ?

ty

[clauudia]

Also, just to extra particular, would it be okay to say that (as two examples) of Braca's area:

1) Responsible for the articulation and pronounciation of speech

2) Used for understanding complex grammatical functions for example in understanding sentences in which the meaning depends on the grammer

It's just that they seem to primarily focus on the articulation side of Broca's area but as a second feature can u talk about grammer?

just trying to make my answers as accurate (sp?) as possible!

yer that looks fine, ive pretty much memoried the same thing
1)articulation of speech
2)analysing grammatical structure of sentences

but i was wondering for the aphasia bit, if the opposite meaning would be right
1)difficulty articulating speech
2)difficulty analysing grammatical structure of sentences

for wernicke:
1) comprehending language
2) locating words frm memory to express a particular meaning.

and for wernickes aphasia im jus gonna put "difficulty" in front.

can someone please check if thats fine?
ty

[d0minicz]

Broca's aphasia would result in slow, deliberate speech, and sentences that make sense and are meaningful, but are not grammatically correct and usually only consist of verbs and nouns.

Werneckie's aphasia would result in difficulty comprehending human speech and language, and would result in grammatically correct sentences, but they make no sense (which has got to do with not being able to select words from memory as you said).

[clauudia]

while your there can you please check the following, my teacher said it was fine but id like a second opinion

PET- radioactive substance (glucose) is injected into the bloodstream then the PET maps out the level of blood flow around the brain while cognitive tasks are performed.

fMRI-Computer generated image that provides info about the working brain during cognitive tasks by tracking oxygenated blood flow around the brain.

ESB- electrodes are attached to specific areas of the brain. If a stimulation of those electrodes causes a response, then it is assumed that that specific area is involved in that function.

ty

[Glockmeister]

while your there can you please check the following, my teacher said it was fine but id like a second opinion

PET- radioactive substance (glucose) is injected into the bloodstream then the PET maps out the level of blood flow around the brain while cognitive tasks are performed.

fMRI-Computer generated image that provides info about the working brain during cognitive tasks by tracking oxygenated blood flow around the brain.

ESB- electrodes are attached to specific areas of the brain. If a stimulation of those electrodes causes a response, then it is assumed that that specific area is involved in that function.

ty

yep, sounds ok to me

[clauudia]

and when im asked for what happens when the sympathetic NS is in action, i can say: pupils dilate to allow more light into the eyes. and Heart rate increases to allow more bloodflow in the body?

[d0minicz]

ummm best to be safe and state that it activates the Fight-flight response, which in turn dilates the pupils, increases the heart rate, increases the activity of the muscles and so on...

[mypurpleundercracka]

can anyone please tell me the exact frequencies and amplitudes for alpha and theta waves

i believe alpha is medium-high frequency, medium-low amplitude and theta medium-low frequency and higher amplitude

is this correct?

[Poppy M]

Um Im pretty sure theta waves are described as having both high and low amplitude as a specific characteristic of theirs... and as for alpha waves, every text iv read has something different for their freq and amp

[d0minicz]

theta waves = medium freq , medium amplitude