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VasudevThanksDear Sir,In my case i have 50 patients with Vestibular failure and 50 healthy controls, From structural analysis i have found significant atrophy in Subiculum ( Right hemishere), With Subiculum as seed and vestibular nuclei as termination point with pons,midbrain as waypoints i have computed Probtrackx for both groups ( healthy and patients ) , Now i would like to calculate streamline counts for both ipsilateral ( Right subiculum to Right Vestibular nuclei with Right pons and mid brain) and contralateral pathways in both groups ( healthy and patients ) and see if there is any difference in anatomical connectivity btw the groups.On 9 February 2018 at 04:55, Anderson M. Winkler <[log in to unmask]> wrote:Hi Vasudev,What exactly would you like to compare?All the best,AndersonOn 30 January 2018 at 16:26, Dev vasu <vasudevamurthy.devulapally@gmail.com > wrote:VasudevThanksDear all,After computing Probtracx , I would like to perform Group differences in Tractography , how should i create a GLM for computing post hoc tractography for Group studies ( i.e. Healthy controls and Patients ) .