Olimex OpenEEG: Difference between revisions
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Additionally, you can use DatPlot to view the raw EEG data, for example, to visualize REM movements or detect K-complexes. | Additionally, you can use DatPlot to view the raw EEG data, for example, to visualize REM movements or detect K-complexes. | ||
== Hardware | == Hardware setup == | ||
[[File:AE PE.webp|thumb|Active vs passive electrodes]] | [[File:AE PE.webp|thumb|Active vs passive electrodes]] | ||
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Plug the electrodes into the main device: connect the PE to the DRL socket, and plug the remaining electrodes into the other four input sockets. Note: It’s recommended to avoid unplugging the electrodes from the device, as this can risk damaging the electrode jacks. Try to keep them plugged in at all times. | Plug the electrodes into the main device: connect the PE to the DRL socket, and plug the remaining electrodes into the other four input sockets. Note: It’s recommended to avoid unplugging the electrodes from the device, as this can risk damaging the electrode jacks. Try to keep them plugged in at all times. | ||
=== Electrode | === Electrode positioning === | ||
There are several ways to position the electrodes on the head. The main configurations are discussed below. | There are several ways to position the electrodes on the head. The main configurations are discussed below. | ||
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The simplest configuration places the DRL electrode in the middle (FPZ), with CH1+ and CH2+ above the right eyebrow (FP1), and CH1– and CH2– above the left eyebrow (FP2). This setup is reliable and allows both channels to record the same data, providing redundancy and improving data reliability. | The simplest configuration places the DRL electrode in the middle (FPZ), with CH1+ and CH2+ above the right eyebrow (FP1), and CH1– and CH2– above the left eyebrow (FP2). This setup is reliable and allows both channels to record the same data, providing redundancy and improving data reliability. | ||
==== DRL on the ear ==== | |||
As a variation of the setup above, the DRL electrode can also be placed on the ear instead of the center of the forehead. | |||
==== CH2 around the eyes ==== | |||
It's also possible to sacrifice redundancy in favor of collecting more data. The first channel is used as before, but CH2 can be repurposed, for example, by placing it near or around the eyes to capture more detailed REM data. | |||
=== Electrode placement solutions === | |||
The electrodes need to remain attached to the head during sleep to record data. There are several ways to keep them in place, some of which are described below. | |||
==== Elastic headband ==== | |||
The easiest way to attach the electrodes is by wearing an elastic headband across the forehead, with the electrodes placed inside. It should be snug enough to keep them from slipping out. For added convenience, the electrodes can also be sewn into the headband to avoid repositioning them manually each time. | |||
== Software Setup == | == Software Setup == | ||
