EEG-labs

Please note that the EEG labs currently have different presentation setups. It is important that you realize that for most experiments you will want to make a choice about which lab to use beforehand and stick to that lab. Otherwise you will have different presentation settings for different subjects!

• lab K2D-30 has a 3D monitor (22" size, resolution of 1680x1050 running at 120 Hz), and which is more suitable if a high refresh rate is more critical than a large field of view or high resolution (specifications here).
• lab K2D-34 has a 3D monitor AND an Ultra HD monitor (28" size, resolution of 3840x2160 running at 60Hz). The latter is meant for experiments that require a large field of view with high resolution, but for which a high refresh rate is less critical (specifications here). You should follow the instructions for switching between monitors in K2D-34 when switching between them.

General instructions: 1) Turn off all cell phones (also outside the subject cubicle), when the speakers are turned on (when you use sound in your experiment or your predecessor has left them on). 2) Close the lab entrance door to make optimal usage of the faraday cage http://en.wikipedia.org/wiki/Faraday_cage 3) Turn the occupied light on when you’re running an experiment and turn it off when you finish running. 4) Write the number of electrodes you use in your reservation. Example reservation: “John Doe J.Doe@vu.nl 0612345678 128channels” 5) Bring broken electrode bundles to Jarik (BioSemi doesn’t want us to put stickers or tape one them). 6) Inform me when there’s a now-show, so I can use all free office hours to do maintenance and bundle testing/repairs. 7) Use the passive mouse buttons instead of normal mouse or keyboards for high precisions response timing. http://itmwiki.psy.vu.nl/index.php/EEG_LPT_sync_triggers

Manuals and forms (everybody who measures EEG in one of the labs should read and adhere to these!):

• File:Quick reference guide.pdf (a quick reference guide when measuring EEG)
• File:EEG manual BioSemi Vu 2015.pdf (a more detailed reference guide, also important to use when learning EEG for the first time)
• Information and forms for running EEG experiments

Data analysis:

• Scripts for processing EEG data

Equipment:

Unless otherwise noted, all labs have a BioSemi acquisition system. Our FPP IT department maintains the labs, including the BioSemi system. They maintain a page about the system (including information about how to send triggers and which caps we have):

• BioSemi system on ITMwiki
• How to scale monitors on ITMwiki
• An Excel file that will help you to compute visual angle for your configuration: File:VisualAngle.xlsx

If you want more information about EEG and/or the labs, you can contact one of the research assistants and/or one of the staff members:

• RA: Jonathan van Leeuwen
• Staff: Artem Belopolsky
• Staff: Johannes Fahrenfort
• Staff: Joram van Driel