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Assuming you still have access to the scanner-- the most straightforward solution is to scan you/a coworker the same way you did all your subjects, but put a vitamin E behind one of your ears (and remeber WHICH one of course!)--- then work out your processing pipeline for the subject where you are 100% sure of the L/R (i.e. follow the vitamin E capsule)--- then you can just apply the same set of preprocessing to all your other subjects that were acquired with the same scanning protocol dg On Sat, May 23, 2009 at 4:38 AM, huangpy py <[log in to unmask]> wrote: > Hi Michael, thanks for you answer.The problem is, I have a set of > images to be processed from a GE scanner (without the E capsule) , how could > I know the left-right? > > btw: It seems that I made a mistake, I just replied your letter to send > mine to FSL. It's under your topic now.....sorry for that~ > > yours, > Ethan > > > 2009/5/23 Michael T Rubens <[log in to unmask]> > > There are no consistent anatomical differences if that's what you're >> asking. We tape a vitamin E capsule to the right side of all our subjects >> heads for this purpose. >> >> Cheers, >> Michael >> >> >> On Fri, May 22, 2009 at 7:37 PM, huangpy py <[log in to unmask]> wrote: >> >>> Hi everybody: >>> I'm a greenhand in data processing. I don't know how to identify the left >>> brain and the right brain. For original axial images acquired in MR scanner, >>> is it always left part-right brain? And, we can flip the images at some >>> steps in data conversion and preprocessing, which sometimes makes me >>> confused at last. Is there a way I can clearly know which is left or right? >>> >>> Thanks >>> >>> Ethan >>> >>> >>> 2009/5/12 Michael Milham <[log in to unmask]> >>> >>>> COGNITIVE NEUROSCIENCE POST-DOCTORAL POSITION >>>> Institute for Pediatric Neuroscience, NYU Child Study Center, NYU
 >>>> School
 of Medicine
 >>>> >>>> The Institute for Pediatric Neuroscience is currently recruiting >>>> a
 post-doctoral
 fellow >>>> interested in identifying and/or characterizing abnormalities
 >>>> in
 the
 neural substrates of >>>> fundamental cognitive processes, as related to
 substance use >>>> disorders (e.g., nicotine, >>>> cocaine) and psychiatric disorders that increase their risk (e.g., >>>> ADHD).

 The fellow will >>>> work as part of a multidisciplinary team, integrating
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 >>>> findings of a broad spectrum of >>>> approaches including:
 >>>> >>>> - resting state functional MRI
 >>>> - task-based functional MRI
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 >>>> - completed PhD in cognitive neuroscience, cognitive psychology, >>>> neuroscience, or related >>>> fields
 >>>> - significant prior neuroimaging experience with functional MRI
 >>>> (prior
 experience with >>>> EEG is a plus, but not required)
 >>>> - strong skills in usage of one or more common functional >>>> neuroimaging
 (FSL, SPM, >>>> AFNI) packages
 >>>> >>>> Programming experience in Matlab, C/C++ or similar platform is a >>>> plus

 >>>> >>>> Anticipated start date: summer, 2009.
 >>>> >>>> If interested, please contact me at [log in to unmask] >>>> >>> >>> >> >> >> -- >> Research Associate >> Gazzaley Lab >> Department of Neurology >> University of California, San Francisco >> > > -- David A Gutman, M.D. Ph.D. Department of Psychiatry & Behavioral Sciences Emory University School of Medicine