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FP5

NEUROBIT Report Summary

Project ID: IST-2001-33564
Funded under: FP5-IST
Country: France

A modular and programmable acquisition/stimulation system for standard micro-electrodes arrays

A modular and programmable acquisition/stimulation system for standard Micro-Electrodes Arrays has been designed; specific boards plugged in a rack and PC controlled run analogue acquisitions and stimulation from and to MEAs.

The rack receives from the MEA 4 to 60 analogue signals. The signals are processed (programmable amplification, filtering), digitised and transferred to the PC system via a PCI bus. The rack is also in charge of the generation of programmable stimulation signals, triggered by the PC. The rack functions are controlled by the user via an i2C bus from the computer. The signal channels are processed in parallel; the complete set-up of 60 channels requires 2 Neurobit racks, as each manages 32 channels for the acquisition and 16 channels for the stimulation.

Specifications list:
Acquisition (from MEA):
Number of input channels: 4/Board
Input Voltage: +/-1V
Gain: 1 to 127000
Noise density at: 1kHz en =13nv/
Input impedance: >1010_ – 6pF

Stimulation (to MEA):
Number of output channels: 4/Board
Input triggers: 4/Board
Output voltage range: +/- 15V
Waveforms: monophasic, biphasic, square pulses
Operation mode: Digitally triggered
Communication bus: i2c

Reported by

ÉCOLE NATIONALE SUPÉRIEURE D' ÉLECTRONIQUE, INFORMATIQUE ET RADIOCOMMUNICATIONS DE BORDEAUX
1, AVENUE DU DOCTEUR ALBERT SCHWEITZERBP 99
33402 TALENCE
France
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