The Uniformed Services University of the Health and Sciences (USUHS), intends to negotiate on a sole source basis under the authority of FAR 13.106-1 (b) (1), with Sensorium, Inc. Charlotte, VT for a Digital Bio-Potential Amplifier (DBPA)-1 24 channel portable Electroencephalography (EEG) recording system ((16 bits) (event related potential)) acquisition system, E-Prime, Input Panel, and Integration of software that uses a new digital amplifier technology. These items are being procured as commercial items in accordance with the procedures in FAR Pt. 12, Acquisition of Commercial Items, and FAR Pt 13, Simplified Acquisition Procedures. The amplifier and the digitizer are on the same board. It will be compatible with the Sensorium equipment already in use in the research study conducted at USUHS. To limit the variables within the research study it is vital that all systems are compatible with the Sensorium equipment already in use. These are customized items and are set to USUHS requirements. Listed below are the features that are required:

· Bi-polar impedance matched differential input stage

· Electrode impedance testing of all inputs concurrently presented on a 2d map

· Electrode impedance results data files

· IEC-60601-1 BF compliance – medical grade power supplies

· Bessel low pass filter

· Transfer function linearization

· 17 bit INL, + to – 0.5 bits

· Isolated Ethernet transfer to host computer

· Synchronized and isolated 24 bit digital data logging with analog stream

· 100K mating cycle input connectors

· Programmable high pass, gain, impedance

· Servo high pass filter for increased resolution and dynamic range

· Multiple set-up default settings for ease of operation

· Data engine formatting files in Matlab, binary, EMSE, EDF, and Excel

· Post process filtering real time filtering

· Dynamically selectable data windows

· Serial handshake with E-Prime and Presentation

· Photodiode display logging option

· Expansion to 144 channels

· Stimulus display window

This is not a request for quote; however, all interested parties may contact the Contracting Officer. Sources interested in responding to this requirement must be able to provide convincing evidence that they can obtain/provide the DBPA-1 24 channel portable EEG recording system ((16 bits) (event related potential)) acquisition system, E-Prime, Input Panel, and Integration of software that uses a new digital amplifier technology as stated above. Responses must be in writing and must be received in the office by November 14, 2008.