Thank you Stephen for the helpful comments. I will reconsider my design. greetings
David 2015-01-26 12:41 GMT+01:00 Stephen Smith <[email protected]>: > Hi - separate from your main question, in general I have a "better > feeling" about netmat analysis from the 50 and 200 node datasets than the > other options. Please don't ask me to defend that (or be correct about > it!) - because it's just a gut feeling from having played with the datasets > a lot. > > Wrt your main question - if your final analysis involves any > cross-subject modelling, then the analysis is *likely* to be most limited > by subject variability - and as a result probably the single most important > thing to maximise is subject numbers. > > More generally, I would say you should aim to use all the data (subjects), > even if you have to wait a bit longer for the results! > > Cheers, Steve. > > > > > On 26 Jan 2015, at 11:35, David Hofmann <[email protected]> wrote: > > Hi @all, > > I downloaded the node timeseries for the HCP subjects. There are different > amounts of "ICA-ROIs", that is 25,50,100,200,300. > > I have to make a trade-off between amount of computation time, amount of > persons to include and what might be generally "prefered" or accepted by > reviewers. > > For example, I thought of either using the 25 ROI's and analyse about 50 > people or use the 100 ROI's and analyse 10 people. Both would require > approximately the same amount of computation time. > > I personally prefer to use the 100 ROI's but on the other hand 25 ROI's > are easier to handle computationally. But then I'm wondering if 25 ROI's is > "enough". > > I know there is no general answer, but I just wanted to hear some opinions > on that from you. In other words which amount of ROIs and people (25/50 or > 100/10) would you choose and why? > > Thanks in advance > > David > > > > > > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > > --------------------------------------------------------------------------- > Stephen M. Smith, Professor of Biomedical Engineering > Associate Director, Oxford University FMRIB Centre > > FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK > +44 (0) 1865 222726 (fax 222717) > [email protected] http://www.fmrib.ox.ac.uk/~steve > --------------------------------------------------------------------------- > > Stop the cultural destruction of Tibet <http://smithinks.net> > > > > > _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
