under construction 11/05
Typically, the design of an fMRI experiment is completely fixed in advance. Dynamically Adaptive Imaging allows the task, stimuli, MRI acquisition parameters or the subject’s behaviour to be contingently modified online, making imaging studies more sensitive and more robust. The system is currently in the piloting stages. This page includes SOPs for the pilot experiments which have been successfully run.
For comments or questions please contact RhodriCusack or MicheleVeldsman.
DAI set up
attachment:hardware.PNG
A simple overview of the current hardware and software set-up is illustrated above. Overall control and processing is handled by the stand-alone Linux machine.
Configuring the Siemen's console
Enable Advanced User. Using ctrl+esc access 'run' in the start menu and input <ideacmdtool>. attachment:ideacmdtool.jpg
Check the 'send IMA' switch (option 5) is turned on (if not, option 8 will switch it on). This allows the Siemens machine to send images to the real-time machine. Ensure the correct network drive is mapped by accessing 'My Computer' and double clicking on the network drive <MRI on Samba...> (password access only). Set an experimental protocol on the Siemens machine, specifying slice numbers, TR, measurements etc.
After running a real-time protocol, ensure you switch off the 'send IMA' switch and disconnect the mapped drive to prevent all following scanning sessions being slowed down.
Configuring the DAI Linux machine and Stimulus Delivery machines
On the DAI linux machine log in (uname and password needed), and start the CburtPortWatcher (double click watchport icon). On the stimulus delivery machine (currently configured to stim 5) run the cbu_portwatcher (PUTYOURFILESHERE/michele/cbu....). You will see the following messages...
DAI linux machine
{{{ Received HELLO_REALTIME stim05 Received HELLO_REALTIME, responded with HELLO_STIM }}}
Stimulus Delivery Machine