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--- biac:experimentalcontrol:biac6hardware [2024/02/12 16:28]
cmp12
+++ biac:experimentalcontrol:biac6hardware [2024/02/12 17:39]
cmp12 [BIAC6 Screen Configuration]
@@ Line 93: / Line 93: @@
 ==== BIAC6 Screen Configuration ====
-  * BIAC6 is equipped with NordicNeuroLab ( NNL ) [[https://www.nordicneurolab.com/product/visualsystem-hd|VisualSystemHD]] goggles
+  * BIAC6 is equipped with NordicNeuroLab ( NNL ) [[https://www.nordicneurolab.com/product/visualsystem-hd|VisualSystemHD]] goggles for stereoscopic display
+  * The individual eyes of the NNL headset are hard-wired to the graphics card on the display computer and not routed through the switcher
+  * because of this setup, the stimulus computer appears to have 4 monitors
+  * monitor 1,2 are connected to the switcher and can be switched around to all the different displays at the scanner suite
+  * 3,4 are directly connected to the googles and can only output there
+  * when configuring your tasks to display, please take account of which monitor you are sending the outputs since 3,4 will always be the googles only.
+One of the best ways to assure your configuration stays the same is to select a default display icon from the desktop ( ie: Clone or Extended displays )
+{{ :biac:display_graphics:display_icons.png?600 |}}
+Extended Displays will show up as 4 separate screens in the system information
+{{ :biac:display_graphics:extended_display_biac6.png?600 |}}
+Depending on your stimulus presentation software you may want to hard-code which display you are presenting your task.
+For instance PsychoPy the first screen would be #0
+<code python>
+import pyglet
+display = pyglet.canvas.get_display()
+screens = display.get_screens()
+screenNum = 0
+#get resolution of screen 0
+win_res = [screens[screenNum].width, screens[screenNum].height]
+#set the output to always go to screen 0
+win = visual.Window(size=win_res, screen=screenNum, allowGUI=True,
+                    fullscr=True, monitor=exp_mon, units='height',
+                    color=(0.2, 0.2, 0.2))
+msg1 = visual.TextStim(win, text=u"Hello world!", pos=(0,0)) #centered
+msg1.draw() #draw it
+win.flip() #put it on the screen
+core.wait(5) #wait 5 seconds
+win.close() #close it
+core.quit() #stop
+</code>
+matlab PTB the first screen would be #1 ( matlab is indexed starting at 1 instead of 0 ).
+<code matlab>
+%configure the first screen is psychtoolbox
+screenNumber = 1;
+[Window,var.winrect] = Screen('OpenWindow',screenNumber,0);
+</code>

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