EyeLink-Brain Products Integration

Experiment Builder Integration

Version 2.2 of SR Research Experiment Builder software has dedicated nodes that simplify integrating Brain Products EEG systems with EyeLink systems. Experiment Builder implements integration with Brain Products EEGs using Remote Control Server 2.0 (RCS 2.0), an interface between TCP/IP and OLE automation commands in the BrainVision Recorder.

Dedicated Experiment Builder nodes allow users to:

• Configure BrainVision Recorder workspace, experiment number
• Open/close experiment sessions
• Start, stop, pause, and resume EEG recordings
• Send event markers (through TTL) to mark stimuli and response onsets
• Set Recorder modes (Monitoring, Impedance, View Test Signal)
• Send annotations
• Check the state of BrainVision Recorder, application, and acquisition

Integration Detail

• During task performance, the stimulus presentation software (e.g. E-Prime, Presentation, PsychToolBox, etc.) simultaneously sends TTLs signals to the Brain Products equipment via a parallel port cable, and messages to the EyeLink Host PC via an ethernet link.
• The TTLs / Messages mark key trial events (such as stimulus onset / participant response etc), allowing data to be co-registered at the analysis stage.
• The TTL signals can either be sent from the parallel port of the Display PC or Host PC. If neither computer has a parallel port then a device such as the USB2TTL8 can be used.
• If Experiment Builder is used, control of the BrainVision Recorder PC is possible via an ethernet link.