What is most cost-effective and affordable EEG system for Event-related potentials?
Affordable EEG systems are mostly for polysomnography, and some products (like brain vision) are too expensive for me. Biopac ones looks fine, but I don't want to pay additional cost for wireless, because most of my experiments happens in the lab.
ERP researchers, any recommendations are welcomed : )
p.s. I already happen to have 2x EEG100C unit for my biopac amplifier. 2ch is enough without localization? I don't want to 10 EEG100C channels in the MP150...
The more important part is EMG and ECG for me, so I don't want to the system full-loaded.
I can recommend Mitsar EEG amplifiers. http://www.mitsar-medical.com/eeg-machine/ Their 201 amplifier is a 19-channel system and is normally bought as a bundle with WinEEG EEG analysis software, and Psytask ERP analysis software. The Open University UK use that system. I use the Mitsar 202 which is a 32 channel system - higher sampling rate (500/sec vs 250 for the 201; and expanded frequency coverage up to 150Hz. Not the cheapest, but far from the most expensive.
best for what? I couldn't discern from your questions exactly what you're trying to do. obviously, localization with 2ch is laughable in some fields, but perhaps less so in others. I also don't know what you meant by not wanting the system "fully loaded" - do you mean that you want to reserve more bandwidth for EMG/ECG? or do you mean you're trying to minimize the number of non-EMG/ECG channels?
I would suggest a Micromed system with a 32 channel headbox.
Micromed is an italian company producing biomedical devices for neurophysiology. We actually use Micromed for any clinical application (EEG, EP, EMG), but it could also be used for research purposes. Headbox can be connected to a USB box or to an acquiring board installed on a PCIexpress bus of a desktop pc. The software allows simple analysis but data can be exported in different formats and loaded into EEGLAB for further processing.
http://www.micromed.eu/index.asp?lng=1
I used a Biosemi Active Two system (with active electrodes) and I generally liked it. Now I am using Brain Vision which is also fine. Biosemi seems to be a bit more "user friendly" (it was easier & quicker to prepare the electrodes, compared to Brain Vision) but the data quality is a bit higher right now (with Brain Vision). But that may reflect the fact that I now spend more time on impedances, whereas I spent much less time on getting impedances down with Biosemi. Bottom line: both systems are quite nice. If you go for one of those, it should be a good investment.
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