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Tobii And E-Prime Slideshow

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A simple presentation detailing the integration between Tobii eye tracking and E-Prime software.

A simple presentation detailing the integration between Tobii eye tracking and E-Prime software.

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    Tobii And E-Prime Slideshow Tobii And E-Prime Slideshow Document Transcript

    • 3/3/2009 Tobii & E­prime Tobii / E­Prime eye tracking integration • Combines E­Prime experiment design and control with Studio’s  powerful visualizations • Allows communication between the TET Server of the eye tracker and  E­Prime software 1
    • 3/3/2009 Tobii / E­Prime eye tracking integration • Dynamically generate, complex and randomly presented  stimuli • Create paradigms which change based on subject eye  gaze data, AOI hit tests, fixation, user interaction • Very accurate timing for measuring response times HARDWARE SETUPS 2
    • 3/3/2009 Using E­prime for presentation and for collecting eye movement data • E­prime is used to present the  stimulus and collect eye movement  data • Use the TET package call in E­prime • Use Tobii Studio for calibrating the  subjects before the test • Gaze contingency tests possible • Use only E­prime for analyzing the  data • No visualizations of eye movement  data possible Using E­prime for presentation and Studio for collecting eye movement data • E­prime presents the stimulus and Tobii  Studio collects the eye movement data. • Use ClearView package call in E­prime • Use VGA capture card and External video  stimulus in Studio • Events are sent from E­prime to Studio, use  segments and scenes for splitting up the  recording • VGA switch needed to change the source  image shown on the eye­tracker screen. • Use Tobii Studio to analyze and visualize eye  movement data 3
    • 3/3/2009 E­PRIME 4
    • 3/3/2009 E­Prime modules • E­Studio: design and create experiments. Graphical based. • E­Basic: design and create experiments. Script based. • E­Run: converts an E­Studio experiment into a script and runs the  experiment. • E­Merge: combines single session data files into a single multisession data  file • E­DataAid: data management application, allows to filter, edit and export  data to an external Statistical package. • E­Recovery: converts an incomplete E­Run text file into an E­prime data  file. E­Studio interface 5
    • 3/3/2009 E­objects and packages • E­objects are instructions that can be dragged onto the  procedure timeline  • Packages are sets of E­objects that are used to interact with the eye tracker E­PRIME EXTENSIONS SETUP 6
    • 3/3/2009 E­Prime Extensions for Tobii • Drag and drop Tobii eye tracker objects and stimuli on  timeline TET packagecall ­ control and collect data directly from the eyetracker 7
    • 3/3/2009 TET packagecall: • TET Open: tells the eye tracker to start collecting eye movement data • TET TrackStatus: displays the track status window, useful when setting up the  eye tracker. • TET OpenGazeDataFile: creates and opens a tab delimited raw gaze data file  (.gazedata) • TET StartTracking: tells eye tracker to start saving eye tracking data • TET WaitForFixation: halts the experiment until the participant fixates on an object  for a given amount of time in ms. • TET StopTracking: tells the eye tracker to stop collecting eye movement data • TET GazeReplay: replays the scanpath on top of the stimulus • TET CloseGazeDataFile: saves the gaze data file • TET Close: closes the connection to the eye tracker • WriteGazeDataFile: writes a line of data to the GazeData file ClearView packagecall: • Init: initializes the connection to Studio • SendGenericEvent: sends a generic event to Studio.  Interpreted as the keypress controlling event logging during  recordings • SendLogEvent: sends an event to Studio for example a  response or the stimulus name • StartRecording: triggers Studio to start recording the test • StopRecording: triggers Studio to end the recording • Uninit closes the connection to Studio 8