CEBL: CSU EEG Brain-computer interface Lab

One of the objectives of our project is to demonstrate that inexpensive components and custom, open-source software can be assembled to perform experiments in the on-line analysis of EEG signals. Our focus for such a system is brain-computer interfaces.

Software

The CEBL software and documentation is available at www.cs.colostate.edu/~bratman. It is written in C++ for Linux. The code includes functions to interface with the EEG amplifier listed below using the Linux generic SCSI interface.

The CEBL code will be available here soon. Here is a preliminary video of CEBL in action, showing real-time monitoring and artifact removal for 19 channels of EEG.

Hardware

We are using the following off-the-shelf components with an approximate total cost of $ 6,800, or $ 5,800 if you already have a computer.

Electrode cap	ElectroCap International, Inc	$ 500
EEG impedance meter	General Devices Prep-Check Plus Multi-Lead Meter	$ 600
EEG amplifier with SCSI interface	NeuroPulse-Systems LLC	$ 4,500
SCSI adapter	Adaptec	$ 200
Notebook computer		$1,000

The notebook computer can be connected to the NeuroPulse EEG amplifier either through a SCSI PCMCIA card, such as Adaptec Adaptec SlimSCSI 1480, or through Adaptec's USB2xchange product. The USB2xchange is very useful for newer notebooks that do not have a PCMCIA slot.