2.4. Flexibility of the electrode system
An additional aspect you might want to consider is how affordable and versatile the equipment is. The good news is that most of our electrode technologies can be used with all Brain Products amplifiers, thus you could start with one technology and later expand your lab to others.
2.4.1. Use with different head sizes
Classical passive EEG caps usually come with electrodes and wires that are fixed into the cap fabric with optimized cable routing. This is the case for caps such as BrainCap, LiveCap, and R-Net. However, needing to purchase different caps for different head sizes of course has implications for your budget.
On the contrary, actiCAP slim/snap, actiCAP Xpress Twist or the CGX Mobile caps are equipped with holders that allow you to easily snap electrodes in and out of the cap between measurements. This way the same electrode bundle can be conveniently used across different cap sizes (ranging from 34 cm to 64 cm head circumferences).
Another option is the CGX Quick system. These dry electrode headsets follow an innovative one-size-fits-all concept, meaning that the same unit can be used on participants with different head sizes (range of head sizes from 52 to 62 cm).
2.4.2. Flexibility of choosing electrode positions
If you are using a cap with electrode holders, you will also be able to flexibly place your electrodes into any of the available standard positions on the cap. This means if you want to cover specific brain areas more densely than others, you can simply get a cap with additional holder positions (for example a 64-channel cap for a 32-channel electrode bundle). This will for example work great with the actiCAP snap.
2.4.3. Ease of repair
Even when working with very robust systems, single electrodes can become faulty with extensive use. For your convenience, we designed our systems to enable smaller and inexpensive repairs to be performed directly by you, without needing to send the whole bundle in for repair. Faulty electrodes can be replaced easily if you are working with actiCAP slim/snap or actiCAP Xpress Twist, and smaller in-house repairs can also be performed for BrainCap, LiveCap or R-Net with the help of dedicated repair kits.