I know. I reflecting and sharing a bit more than usual, but in my defense I'm
off during our stupid two days Fall Break, and I'm getting myself in the
groove for presentations at Georgia Southern and Lilly-Oxford in November.
Anyway, the discussion between me and this professor at Lilly-North
Since my experience with brain scans is limited, can someone tell me if I have
the following correct:
CT scan: uses xrays, the scan is good for revealing the structure of the ear
perhaps, but very little detail of the brain
MRI: uses magnets, reveals more detail of the brain's structure
fMRI:
Michael - Actually, lots of accessible discussions of this issue are available
on the web. Here are two, but there are many others:
http://www.brainybehavior.com/blog/2007/07/pet-scans-and-fmri-compared/
http://users.fmrib.ox.ac.uk/~stuart/thesis/chapter_3/section3_1.html
...Scott
Scott
Mike Wiliams wrote (among other observations):
We routinely reject applicants for grad school who have the publication
credentials of people we recently hired as assistant professors.
From my personal experience, I know that from the first institution at
which I worked, I achieved the rank of
Bob Wildblood sez:
I think we are facing a qualifications inflation as well as a possible grade
inflation problem.
-
Of course the two are probably related. Perhaps in the past as well as now the
requirements for a position have always been having the credentials that
indicate you
Excellent sources Scott - thank you. So I'll add these key points as
differences between fMRI and PET:
PET: adv: patient can move during the scan, disadv: expensive and invasive
(injection of radioactive isotope)
fMRI: adv: higher resolution than PET, non-invasive, disadv: patient cannot
I believe that PET is X-ray (building up a three dimensional image using
'slices')
while fMRI (functional MRI or magnetic resonance imaging) uses magnets to
stimulate emissions from the brain structure.
Since the actual images depend on the computer processing program that
generates them, I'm
CT: X-rays - sees bone best. Used mostly to show subdural hematomas or
ventricular enlargement.
MRI: Extremely strong magnetic fields align hydrogen molecules. When
magnet is turned off, the hydrogen relaxes back to it's normal state and
give off radiation. Good for seeing water and fat.
Differences between the way PET and fMRI look:
fMRI looks like it is superimposed on a MRI image of the brain
PET is just the PET data and a wire frame sketch of the brain may be
superimposed on it.
fMRI: http://pnrc.cchmc.org/images/hearing/hearing1.jpg
PET:
On Oct 24, 2011, at 5:37 AM, Michael Britt wrote:
Question: fMRI and PET scans look very similar.
In the Psychiatric Times a couple of years ago, John J. Medina published a
series of articles on fMRI that I found very helpful in understanding the
results of research using this technology. He
But can they predict _before hand_ which half of the players will in fact have
hot streaks?
On Oct 24, 2011, at 11:42 AM, Jeffry Ricker wrote:
The hot hand exists in volleyball and is used for allocation decisions.
Raab, Markus; Gula, Bartosz; Gigerenzer, Gerd
Journal of Experimental
Esteemed members of TIPS
I could use your help with social psychology books for our library. Short
version of the story is, I was informed today that my department have not spent
their library budget for this year and today is the deadline. I would like to
ask for your help as we have a
The Danes are reporting that cell phones do not cause cancer.The researchers
are reporting that they followed over 360,000 residents
who were 30 years plus since the 1990s and did not find the link to cancer as
purportedly found by some U.S researchers.I am curious as to the extent
Also, the resolution of CT scans is variable. How much detail is dependent
partly on what is being looked at/for and the computer program that determines
the output but it is generally true that most of the time they will order MRI
for the increased structural detail- but that depends somewhat
I was always skeptical about the initial findings from basketball. Or to
clarify, I am not surprised a hot-hand COULD be established statistically.
Successive shots from people are not purely independent events the way a coin
toss is - the coin has no memory for prior outcomes, nor would the
Athletes perceive a hot hand and may adapt passing and other strategy
decisions based on their belief (which I think this article provided
evidence for in volleyball players). But the belief in a hot hand does not
mean that the belief is valid.
Evidence for a hot hand (in basketball or other
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