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In 2008 Psychology Software Tools, Inc. achieved ISO 13485:2003 certification for its quality management system related to the design, development, production, assembly, integration, installation, sales and servicing of computerized systems, specialty equipment, and hardware/software accessories for human clinical assessment of psychological, physiological, and neuropsychological function using computerized stimulus presentation, accuracy and response time measures, MRI/fMRI, EEG/ERP, MEG, fNIR, and related techniques.
The PowerLab 4/35 is connected to E-Prime through its digital input socket using an AD Instruments E-Prime cable. In this instance, we use Task Events to send trigger information to LabChart Pro.
As part of this research, I am using EEG to analyse brain activity during hazard perception and risk analysis tasks. As EEG involves traditionally static stimuli, in order to eliminate ocular artefacts and to have accurate event markers to produce a stereotyped Event Related Potential (ERP), I was faced with the option of reducing ecological validity by using static imagery or finding another approach. I turned to other areas in psychology for an alternative methodology and stumbled across the use of Eye Fixation Related Potentials (EFRP) in the reading literature. Reading suffers the same issues as driving in that looking at single words presented in the centre of the screen is not “reading” (Baccino, 2012).
This involves participants watching a rendered driving scene where they must press a button when they observe an evolving hazard. An evolving hazard is one that requires the driver to take evasive action, either slowing down or altering their direction. If participants identify the hazard within a specific scoring window, they will be awarded 5 points through to 1 point. Participants are allowed to press the “Hazard” button as many times as they like – all of which is necessary to record.
At present, we the EEG triggers the old fashioned way but intend to upgrade to the E-Prime Extensions for Brain Products on the basis of how simple the EETs are to integrate.
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