Set both switches for the desired protocol, then press the Reset switch briefly. The use of time stamped button responses means that your application does not have to check the serial port so often to get accurate response timing. A bit is set 1 when a button is not pressed and clears 0 when a button pressed. There’s much bigger issues in the world, I know. Also, it would be strange if OpenSesame recognizes the button presses, but doesn’t respect the allowed responses list. OpenSesame is among them. This would typically be done at the time a stimulus event occurs.
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August edited 4: Two final remarks probably obvious: I looked on the Cedrus website, and they claim to offer support for Python. It respknse also be reset to zero by sending a command e5 from the computer through the serial port. The final 4 characters give the time of the press or release since the Reaction Timer cedruz last reset in milliseconds. The response box appears as COM4 on our control room paradigm computers. For example in Matlab use the bitget function to test if a specific button was pressed:.
Thanks and best wishes, Merle.
It has a Cedrus RB board inside for processing response button presses. The way to define the allowed responses is by typing 1;3 in the boc labelled ‘Allowed responses’.
Cedrus Response Box (RB)
OpenSesame is among them. Bits 5,6,7 indicate which button was pressed. I’m afraid I cannot reproduce this problem. This makes it the easiest mode to read in user developed software and should be used for Neurobehavioral Systems Presentation which is installed on all paradigm computers.
The bits of each character indicate the current state of the buttons. Set both switches for the desired protocol, then press the Reset switch briefly.
I have defined the buttons 1 and 3 as Allowed responses 1;3but all the 8 buttons are active and collect responses. Also, it would be strange if OpenSesame recognizes the button presses, but doesn’t respect the allowed responses list.
Any assistance would be greatly appreciated.
[open] SR Box
July edited July July edited July in OpenSesame. I use the responsebox “Cedrus RB”. Besides input from a mouse or a keyboard, would it be possible to record responses from a USB gamepad, for example using the SR Box plugin?
What is the correct syntax for this I have set the allowed keys to “1;5” on the SR box so, ideally, I would like to limit the duration keypress to those buttons. Please see the following topic: Please see the following topic:.
Hi Madjid, The script looks fine, yes. With this mode, the button box can be used to time experiment events rather than relying on the timers in the computer. There is no way to tell if 2 buttons are held down at the same time – you will never get any response other than the 6 shown below. Because this protocol sends this stream of characters, it should be used only with the E-Prime software.
Cedrus Response Pad RB-840
A bit is set 1 when a button is not pressed and clears 0 when a button pressed. Framing should be set to 8 bits, 1 stop, no parity. It looks like you’re new here. When a button is pressed cedruz 6 character response is send through the serial port. But then again, I’d need a Cedrus box to actually test it. Second, there have been problems with the SR box plug-in in the past, so please make sure that you’re running the stable 0.