Lars, We are recording with success from mouse V1 using the VisionEgg software. When using windows there is always the dilemma of timing. We trigger data collection using a photodiode on the screen to avoid the delay with data transmission to the videocard (40-90msecs). We also programmed a TTL through the parallel port but this appeared also around 100msec before the actual arrival of the stimuli on the screen. The stimuli are projected to the screen using a DLP beamer to maintain that RGB signals all converge at the same time. People use DLP beamers to present stimuli to in vitro retinal preparations, also with success. The graphics card that we use is a standard GeFORCE4 card. Good luck Damian -----Original Message----- From: visionegg-bounce@xxxxxxxxxxxxx [mailto:visionegg-bounce@xxxxxxxxxxxxx]On Behalf Of Lars van Ahrens Sent: Wednesday, October 29, 2003 4:56 PM To: visionegg@xxxxxxxxxxxxx Subject: [visionegg] Hardware for Vision Egg Hello! Our electrophysiological setup is currently working with simple white light-/flicker-stimulation and we are planning to upgrade it with complex visual stimuli using Vision Egg. Regarding the high flicker fusion frequency of mice we are looking for a CRT monitor with an appropriate high vertical refresh frequency - and bright should it be too. And the graphics card should work well with the other hardware components. Perhaps somebody can make a suggestion for a reasonable combination of hardware. Or maybe somebody can give us a short report of a combination which already works reliably. ====================================== The Vision Egg mailing list Archives: //www.freelists.org/archives/visionegg Website: http://www.visionegg.org/mailinglist.html ====================================== The Vision Egg mailing list Archives: //www.freelists.org/archives/visionegg Website: http://www.visionegg.org/mailinglist.html