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advice on Opensesame

edited January 2019 in OpenSesame

Hello,

I wish to reproduce task 2 of Sam J. Gilbert et al. in the article « Involvement of rostral prefrontal cortex in selection between stimulus-oriented and stimulus-independent thought » on Opensesame. I think I managed to develop it but I still have some concerns when I run it. The task is to visually follow a geometric shape and press a button when a turn is on the right and another button when a turn is on the left. After a while this form disappears and reappears (see below). My problem when I start the task is that on a given image Opensesame records a single button press and not the set that the subject can do and more the images are repeated constantly as in my block loop I put all the possible possibilities of answers, but the images pass 8 times instead of one. (if ever, I have attached my document)

« In Task 2 (external phase) subjects repeatedly pressed one of two buttons, as if navigating around the edge of a complex shape in a clockwise direction, to indicate whether the next corner would require a left or a right turn. The stimulus presented during this phase was white, ?7 ° tall and wide, and shaped similarly to the outlines of the letters H and F placed adjacent to one another, with the vertical line between them removed (see Fig. 1). A red arrow at the top-right corner of the shape indicated the position from which to start, at the beginning of each scanning session. Following the first button-press response this arrow was removed. During the internal phase the shape was replaced by a similarly sized white ‘thought-bubble’ shape; subjects were asked to imagine the shape that was presented in the external phase and continue navigating from their current position (see Brooks, 1968 for a related task). » Sam J. Gilbert and al, 2005.

Comments

  • Hi Mans,

    It is a little hard to imagine what the troubles are that you are encountering. Could you attach your experiment and a log file for us to have a look? I have a hunch what could be the problem and ideas how to solve it, but it's a little tricky to explain, so I'd like to make sure that I understand correctly :)

    Eduard

  • Hello Eduard,

    Thank you for your response. I have attached my document. If you have any others questions to understand my subject or the problem that I encounter do not hesitate to ask me. Thanks for your help.

  • Hi Mans,

    My problem when I start the task is that on a given image Opensesame records a single button press

    Attached an experiment that fixes that problem. Basically, add a inline_script after the stimulus in which all the keypresses are being collected in a list. How to properly log all of those depends on the shape you need your data to be in.

    As for the problem, of all the combinations, i am still not sure whether I understand. The way I read your description is that regardless of button presses, nothing changes on the screen. In this case I don't think you need all the sketchpads, a single one (or maybe two), should be sufficient.

    Eduard

  • Hi Mans,

    My problem when I start the task is that on a given image Opensesame records a single button press

    Attached an experiment that fixes that problem. Basically, add a inline_script after the stimulus in which all the keypresses are being collected in a list. How to properly log all of those depends on the shape you need your data to be in.

    As for the problem, of all the combinations, i am still not sure whether I understand. The way I read your description is that regardless of button presses, nothing changes on the screen. In this case I don't think you need all the sketchpads, a single one (or maybe two), should be sufficient.

    Eduard

  • edited February 2019

    Hi Mans,

    My problem when I start the task is that on a given image Opensesame records a single button press

    Attached an experiment that fixes that problem. Basically, add a inline_script after the stimulus in which all the keypresses are being collected in a list. How to properly log all of those depends on the shape you need your data to be in.

    As for the problem, of all the combinations, i am still not sure whether I understand. The way I read your description is that regardless of button presses, nothing changes on the screen. In this case I don't think you need all the sketchpads, a single one (or maybe two), should be sufficient.

    Eduard

  • edited February 2019

    @eduard Your post got flagged as spam. I verified your account so that doesn't happen again. But it seems the attachment to your discussion got lost.

    Buy Me A Coffee

  • Yeah, I expected that much. Luckily, I stored the file. Tomorrow I will upload it again.

    Thanks,

    Eduard

  • edited February 2019

    And here is the file. For some reason, I can't upload files. @sebastiaan: Can you check what is going on there?

    In the mean time, you can download the file here: http://www.filedropper.com/task2fix

    Eduard

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