tag:blogger.com,1999:blog-640858365694464089.post478855310533240579..comments2022-11-07T16:02:47.430-08:00Comments on The Neurocomplimenter: A New Slant on Frontal Connectivity: the Frontal Aslant TractThe Neurocritichttp://www.blogger.com/profile/08010555869208208621noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-640858365694464089.post-36654652344930522712013-07-09T15:42:31.366-07:002013-07-09T15:42:31.366-07:00Hi NC, thanks for posting. I am finding that the v...Hi NC, thanks for posting. I am finding that the vast majority of tractography settles on the large associational tracts set out my Mori et al., when there are so many other tracts that will have implications in health and sickness. I will see if I can chew the FAT on my subjects :)Anonymoushttps://www.blogger.com/profile/12220085896849814382noreply@blogger.comtag:blogger.com,1999:blog-640858365694464089.post-16288187882635059142013-07-08T11:01:41.083-07:002013-07-08T11:01:41.083-07:00Rob - Thanks for the correction! Usually all three...Rob - Thanks for the correction! Usually all three are studied, no? The authors actually stated: <br /><br /><i>"Radial diffusivity measures the diffusivity along directions orthogonal to the eigenvector of the diffusion tensor. Radial diffusivity is generally considered a sensitive measure for axonal/myelin damage, although interpretation of their changes in regions with crossing fibres is not always straightforward (Dell’Acqua et al., 2012)."</i>The Neurocritichttps://www.blogger.com/profile/08010555869208208621noreply@blogger.comtag:blogger.com,1999:blog-640858365694464089.post-18033398697875996722013-07-08T08:33:54.757-07:002013-07-08T08:33:54.757-07:00Interesting post! Just a minor point: in the liter...Interesting post! Just a minor point: in the literature, radial diffusivity is most often interpreted as a measure of myelination where as axial/longitudinal diffusivity is thought to reflect axonal damage. However, as you pointed out, these interpretations are somewhat controversial in the diffusion imaging literature given the limitations of the method. <br /><br />(See: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3062747/ and <br />http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2673458/ ) <br /><br />Cheers. Robhttps://www.blogger.com/profile/12357367556269530514noreply@blogger.com