Olimex OpenEEG: Difference between revisions
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Signal quality depends on several factors, including electrode placement, electrical interference, and the user's environment. While results may vary, many users have successfully used this device to monitor sleep stages. | Signal quality depends on several factors, including electrode placement, electrical interference, and the user's environment. While results may vary, many users have successfully used this device to monitor sleep stages. | ||
Generally, sleep stages follow a distinct pattern, as illustrated in the figure on the right. For more details, see section Sleep Stage Identification. | Generally, sleep stages follow a distinct pattern, as illustrated in the figure on the right. For more details, see section [[Olimex_OpenEEG#Sleep_Stage_Identification|Sleep Stage Identification]]. | ||
[[File:Sample Olimex data.jpg|thumb|Sleep stages in Olimex]] | [[File:Sample Olimex data.jpg|thumb|Sleep stages in Olimex]] | ||
== Components == | == Components == | ||
=== Hardware === | |||
The main component that has to be acquired is the '''EEG-SMT device'''<ref name="eegsmt" />, which can be ordered directly from the Olimex website. | |||
Next, you will need '''electrodes'''. There are two options: | |||
* 5 passive electrodes (EEG-PE)<ref name="eegpe" /> | |||
* 4 active electrodes<ref name="eegae" /> + 1 passive electrode | |||
The second option is slightly more expensive but is the recommended choice. Active electrodes provide better performance under imperfect conditions and require no skin preparation.<ref name="openeeg" /> | |||
Finally, you will need to purchase a '''USB A to B cable'''. <ref name="eegcable" /> It is recommended to get a long cable, such as 1.8 meters, since you will be sleeping with the EEG connected to a laptop (in the default setup). The cable should be long enough to allow comfortable movement. | |||
Lastly, you will need a way to secure the electrodes to your head while sleeping, which can be done using an elastic headband or other methods. The hardware setup section provides more details. | |||
== Hardware Setup == | == Hardware Setup == | ||
[[File:Olimex.jpg|thumb|The Olimex EEG device<ref name="bakerdh" />]] | |||
== Software Setup == | == Software Setup == | ||
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{{reflist|refs= | {{reflist|refs= | ||
<ref name="eegsmt">{{cite web |url=https://www.olimex.com/Products/EEG/OpenEEG/EEG-SMT/open-source-hardware |title=Low Cost Open Source EEG Device Completely Assembled USB Interface |website=Olimex |access-date=2025-06-21}}</ref> | <ref name="eegsmt">{{cite web |url=https://www.olimex.com/Products/EEG/OpenEEG/EEG-SMT/open-source-hardware |title=Low Cost Open Source EEG Device Completely Assembled USB Interface |website=Olimex |access-date=2025-06-21}}</ref> | ||
<ref name="eegpe">{{cite web |url=https://www.olimex.com/Products/EEG/Electrodes/EEG-PE/open-source-hardware |title= Low cost open source EEG device passive electrodes with 1m shielded cable to be used for the DRL connection |website=Olimex |access-date=2025-06-21}}</ref> | |||
<ref name="eegae">{{cite web |url=https://www.olimex.com/Products/EEG/Electrodes/EEG-AE/open-source-hardware |title= Low cost open source EEG device active electrodes with 1m shielded cable |website=Olimex |access-date=2025-06-21}}</ref> | |||
<ref name="eegcable">{{cite web |url=https://www.olimex.com/Products/Components/Cables/USB/CABLE-USB-A-B-1.8M/ |title= USB A to B cable 1.8m |website=Olimex |access-date=2025-06-21}}</ref> | |||
<ref name="openeeg">{{cite web |url=https://www.olimex.com/Products/EEG/ |title= OpenEEG |website=Olimex |access-date=2025-06-21}}</ref> | |||
<ref name="bakerdh">{{cite web |url=https://bakerdh.wordpress.com/2013/01/31/a-first-look-at-the-olimex-eeg-smt/ |title= A first look at the Olimex EEG-SMT |website=Daniel's Visionarium |access-date=2025-06-21}}</ref> | |||
}} | }} | ||
