Comments on: Does Brain Scanning Show Just the Tip of the Iceberg? http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/ Fri, 24 May 2013 04:37:00 +0000 hourly 1 http://wordpress.org/?v=3.4.2 By: Nous. « Communion Of Dreams http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1106 Nous. « Communion Of Dreams Tue, 09 Oct 2012 16:25:25 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1106 [...] first, this was just a limited study, and the results are preliminary. And there are problems with trying to use fMRI to pin-point what portions of the brain are involved in [...] [...] first, this was just a limited study, and the results are preliminary. And there are problems with trying to use fMRI to pin-point what portions of the brain are involved in [...]

]]> By: UCLA Psychology in Action http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1105 UCLA Psychology in Action Wed, 30 May 2012 20:39:49 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1105 A UCLA psychology PhD student wrote a really interesting commentary on these findings as well. Check it out here... http://www.psychologyinaction.org/2012/04/18/the_lit_up_brain/#comment-8178 A UCLA psychology PhD student wrote a really interesting commentary on these findings as well. Check it out here… http://www.psychologyinaction.org/2012/04/18/the_lit_up_brain/#comment-8178

]]> By: practiCalfMRI http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1104 practiCalfMRI Fri, 27 Apr 2012 18:35:51 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1104 Hi Angela, Yes, MRI is very safe provided it is used properly, i.e. full screening for implants, and adherence to safety limits for RF and switching magnetic fields (gradients) exposure. People have now been working in and around MRIs for some three decades and the epidemiology is still in the clear; no adverse (health) effects from repeated exposure. (I leave it to the broader audience whether MRI offers career risks... ;-) MRI is demonstrably safer than X-rays and a host of other non-imaging modalities, like transportation (33K deaths per year on US roads alone). Personally, I would rather expose myself to an hour of MRI a day than expose myself to the chaos of Bay Area roads for the same amount of time! Hi Angela,

Yes, MRI is very safe provided it is used properly, i.e. full screening for implants, and adherence to safety limits for RF and switching magnetic fields (gradients) exposure. People have now been working in and around MRIs for some three decades and the epidemiology is still in the clear; no adverse (health) effects from repeated exposure. (I leave it to the broader audience whether MRI offers career risks… ;-) MRI is demonstrably safer than X-rays and a host of other non-imaging modalities, like transportation (33K deaths per year on US roads alone). Personally, I would rather expose myself to an hour of MRI a day than expose myself to the chaos of Bay Area roads for the same amount of time!

]]> By: Daniel http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1103 Daniel Thu, 26 Apr 2012 19:37:53 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1103 I think that what we will find in the final analysis is that a large part of the activity seen in large studies will be due to systematic motion effects. I think that what we will find in the final analysis is that a large part of the activity seen in large studies will be due to systematic motion effects.

]]> By: Anders Eklund http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1102 Anders Eklund Thu, 26 Apr 2012 09:29:22 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1102 According to my recent paper, http://www.sciencedirect.com/science/article/pii/S1053811912003825 , this may actually be due to bad software for fMRI analysis! According to my recent paper, http://www.sciencedirect.com/science/article/pii/S1053811912003825 , this may actually be due to bad software for fMRI analysis!

]]> By: Tom http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1101 Tom Thu, 26 Apr 2012 08:58:59 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1101 "The shouts and screams would be loud enough to reach your *eyes*; the normal conversations and whispers wouldn’t" Do you mean ears? <strong>Ed: Whoops! You're right, of course, Anders. Fixed now.</strong> “The shouts and screams would be loud enough to reach your *eyes*; the normal conversations and whispers wouldn’t”

Do you mean ears?

Ed: Whoops! You’re right, of course, Anders. Fixed now.

]]> By: Altostrata http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1100 Altostrata Wed, 25 Apr 2012 23:42:45 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1100 The URL for the above is http://www.danielbor.com/dilemma-weak-neuroimaging/ The URL for the above is http://www.danielbor.com/dilemma-weak-neuroimaging/

]]> By: Altostrata http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1099 Altostrata Wed, 25 Apr 2012 23:42:20 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1099 Also see "The dilemma of weak neuroimaging papers" on neuroscientist Daniel Bor's blog, with comments from other neuroscientists. Also see “The dilemma of weak neuroimaging papers” on neuroscientist Daniel Bor’s blog, with comments from other neuroscientists.

]]> By: Angela http://blogs.discovermagazine.com/crux/2012/04/25/does-brain-scanning-show-just-the-tip-of-the-iceberg/#comment-1098 Angela Wed, 25 Apr 2012 14:44:19 +0000 http://blogs.discovermagazine.com/crux/?p=1443#comment-1098 !!! One study used 3 people performing a single act 500 times while being scanned?? Do we really know enough about safety of MRI's to support that level of exposure? I hope that study was done over a period of time. !!! One study used 3 people performing a single act 500 times while being scanned?? Do we really know enough about safety of MRI’s to support that level of exposure? I hope that study was done over a period of time.

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