Lights off : checkbox If selected, all lights will be turned off at the end of each routine. Discard previous : checkbox If selected, any previous responses will be ignored (typically this is what you want). Store correct : checkbox If selected, a correctness value will be saved in the data file, based on a match with the given correct answer. Events and the response times are saved, with RT being recorded by the button box (not by |PsychoPy|). Store : (choice of: first, last, all, nothing) Which button events to save in the data file. This field lets you specify which buttons (None, or some or all of 0 through 7). Responses on non-active buttons are ignored by the box, and never sent to |PsychoPy|. Active buttons : None, or an integer, list, or tuple of integers 0-7 The ioLabs box lets you specify a set of active buttons.
Psychopy store correct how to#
What information to save, how to lay it out and when to save it. Force end of Routine : checkbox If this is checked, the first response will end the routine. stop : The duration for which the stimulus is presented. start : The time that the stimulus should first appear. The name should contain only letters, numbers and underscores (no punctuation marks or spaces). Properties name : string Everything in a |PsychoPy| experiment needs a unique name. The ioLabs button box also has a built-in voice-key, but |PsychoPy| does not have an interface for it. It might be possible for you to obtain a correction factor for your computer + button box set up, if the timing delay is highly reliable. If this takes a while, then the RT timing values are not likely to be high precision.
This is what makes it capable (in theory) of high precision timing.Ĭheck the log file to see how long it takes for |PsychoPy| to reset the button box's internal clock. The time taken is determined by a clock on the device itself. seealso::ĪPI reference for :class:`~ button box is a hardware device that is used to collect participant responses with high temporal precision, ideally with true ms accuracy.īoth the response (which button was pressed) and time taken to make it are returned. Use box timer : true/false Set this to True to use the button box timer for timing information (may give better time resolution). Device number: integer This is only needed if you have multiple Cedrus devices connected and you need to specify which to use. Discard previous : true/false If selected, any previous responses will be ignored (typically this is what you want). Store correct : true/false If selected, a correctness value will be saved in the data file, based on a match with the given correct answer. Allowed keys : None, or an integer, list, or tuple of integers 0-7 This field lets you specify which buttons (None, or some or all of 0 through 7) to listen to.
Force end of Routine : true/false If this is checked, the first response will end the routine. Stop : Governs the duration for which the button box is first read. Start : The time that the button box is first read. Properties Name : string Everything in a |PsychoPy| experiment needs a unique name.
Psychopy store correct code#
As a workaround, you need to insert the start-routine and each-frame code from the button box into a code component for a second routine. Otherwise |PsychoPy| tries to initialise it twice which raises an error. Note that there is a limitation currently that a button box can only be used in a single Routine. This component allows you to connect to a Cedrus Button Box to collect key presses.
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