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Brain–Computer Interfaces - Index of

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The First Commercial Brain–Computer Interface Environment 283<br />

Fig. 2 Development<br />

processes for product release<br />

Fig. 2 illustrate the effort and the development costs <strong>of</strong> the traditional approach,<br />

which are typically much higher than for the rapid prototyping process [4].<br />

Based on the discussed above requirements, a rapid prototyping environment for<br />

BCI systems has been developed and upgraded since 1996 [9]. The most important<br />

features <strong>of</strong> this BCI environment will be discussed in detail in the next sections,<br />

and the realization <strong>of</strong> important BCI applications based on this environment will be<br />

shown.<br />

2 Rapid Prototyping Environment<br />

2.1 Biosignal Amplifier Concepts<br />

One <strong>of</strong> the key components <strong>of</strong> a BCI system is the biosignal amplifier for EEG or<br />

ECoG data acquisition. Figure 3 illustrates 3 different devices with different specific<br />

Fig. 3 Left: 16 channel stand-alone amplifier g.BSamp. Mid: 8 channel wireless amplifier<br />

g.MOBIlab+. Right: 16 channel amplifier g.USBamp with USB connection

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