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You could take a look at free psychophysics toolbox (www.psychtoolbox.org), which is a set of Matlab tools. You can change priority level, timing is good (preloads images into memory), and it's easy to use. Depends what your visual stimuli are like. It's worked well for my experiments in fMRI. Just a thought. Phil Juanjo Lull (UPV) wrote: > Dear Mathieu, > Java is not a low-level language such as C. Thus, the time accuracy is > quite less stringent than the time accuracy present in other > programming languages. Furthermore, garbage collection (i.e. > destruction of variables because they are not being currently used) > can happen at any time by default. > So the short answer is that Java does not guarantee time accuracy. It > is an excellent programming language for object oriented programming, > but it is not the best option: Workarounds can be done, but it is very > difficult to work with Java when synchronization is of high priority > anyway. > I hope this helps. > Yours sincerely, > Juan J. > > Mathieu d'Acremont wrote: >> Dear All, >> >> I would like to use the Java Programming Language to display stimuli >> and record response in a fMRI study (and then of course use SPM to >> analyze the data). I wonder how synchronization with the scanner can >> be done with Java an if Java guarantee time accuracy. Does anybody >> have experience with Java in fMRI experiment? >> >> Best, >> >