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E-Prime® Extensions for SMI Overview

E-Prime® Extensions for SMI adds eye gaze and eye movement capabilities to existing and novel E-Prime experiments. Create new paradigms with E-Studio's graphical design interface and connect with flexible Remote Eye Tracking technologies by SensoMotoric Instruments.


  • Create interactive or passive eye tracking paradigms
  • Create paradigms which change based on participant eye gaze data, AOI hit tests, fixation and user interaction
  • Combine eye gaze data with E-Prime condition data for powerful analysis
  • Train participants to fixate and control eye movements
  • Give feedback on vigilance or attentive behaviors
  • Supports diagnostic and interactive studies:
    • Face perception and recognition
    • Infant studies
    • Reading (sliding window)
    • Attention patterns and behavior
    • Visual search
    • Scene recognition


SMI Eye Trackers


SensoMotoric Instruments (SMI) provides remote and wearable eye tracking solutions for studies in the laboratory, in real-life and in virtual environments. 





SMI RED250mobile - Portable, contact-free 250 Hz eye tracking laboratory






SMI REDn Scientific - Portable, contact-free eye tracker with extra large headbox






SMI RED500 - Contact-free eye tracker with high speed capabilities






SMI Eye Tracking Glasses 2w - Mobile eye tracking for daily life scenarios






SMI Eye Tracking HMD Upgrade for the Oculus Rift DK2 - Eye tracking in virtual reality






SMI Experiment Suite Scientific - Dedicated software for eye tracking research

E-Prime® Extensions for SMI Features

  • Allows for the use of SMI Remote Eye Tracking as straightforward input device for E-Prime
  • Supports multiple AOIs; regions are defined dynamically as stimuli are drawn to the screen
  • Supports dynamic definitions of fixation and dwell time
  • Enables current paradigms to use eye tracking to corroborate participant compliance, fixation, and cognitive strategies
  • Enables paradigms to show feedback for training purposes
  • Start and stop trials contingent on eye gaze, fixation, or eye movement criterion
  • Adds SMI eye tracking control directly to the E-Studio experiment design environment
  • Provides script library to allow additional run time processing of data
  • Enables calibration inside or outside of E-Prime
  • Allows the overlay of eye gaze data with your E-Prime stimuli
  • Start and stop eye tracker to collect data selectively
  • Filter participant data based on eye gaze, fixation, validity, and eye movements

E-Prime® Extensions for SMI Requirements

  • E-Prime 2.0 Professional SP1 ( or SP2 (
  • SMI eye tracker (e.g., REDn Scientific, RED-m, RED250mobile, RED250, RED500)

E-Prime® Extensions for SMI Pricing

 Please email us at sales@pstnet.com for more information or request a quote.

E-Prime® Extensions for SMI Support

Support is provided through the PST Product Service and Support site. The site provides the latest updates, Knowledge Base section, Samples, Downloads, and a personal support forum to communicate with PST support representatives. Additional FAQs are also provided in the E-Prime product pages.

Click here for Support Plan details.

Click here to vist the PST Product Service and Support site.


Users are also encouraged to use the PST User Forum (a free service provided by PST for end users) to share information about any of PST's products.


In addition, an independent discussion list has been set up for E-Prime users (http://groups.google.com/group/e-prime/). Although this service is not run or moderated by PST, we wanted to inform you of its existence. We encourage you to participate in either or both forums as a means to share information about E-Prime and obtain assistance from a growing and experienced group of E-Prime users.


An archive of past discussions is maintained by Anthony Aristar's Linguist List systemhttp://listserv.linguistlist.org/archives/eprime.html.

E-Prime® Extensions for fMRI Gallery

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