Si Brain Probe "Neuronode" series

Overview:
Electroencephalographic data-recording system and brain stimulator in a specific area at tiny cranial nerve level are strongly required for analytical researches of brain functions or development of medical treatments for brain diseases. For these purposes, the advanced microelectrode, which achieves deep brain stimulation and electroencephalographic signal acquisition without hurting cerebral cortices, is essential. Fig-1 shows the configuration of “Brain Signal Processing System (BSPS)”. In this system, LSI chips, such as amplifiers (AMPs), A/D converters (ADCs), and multiplexers (MUXs), are integrated on a microelectrode.

Fig-1: Brain Signal Processing System

In the past few decades various types of Si electrodes have been developed because Si is highly biocompatible material and the electrodes made from Si can be well manufactured by use of a general CMOS process. However, the number and area of cranial nerves, observed by the conventional electrode, is so small and less, not enough for observation of 3-D distribution in a targeted area. Furthermore, the conventional electrode might cause physical damages at cranial nerves. Now on further improvement is being aspired.

T-Microtec, by use of its proprietary 3D-Stacking LSI process and assemble technology utilizing fine-pitch Through-Silicon-VIA (TSV), develops advanced multichannel Si Brain Probe products, “Neuronode” series, which can reach from brain surface to basal ganglia, and acquire multi-dimensional electroencephalographic data, as well as three-dimensionally stimulate cranial nerves.

More info: info@t-microtec.com