This preamplifier and DSP card set consists of 64 channels of
differential amplification, A/D conversions, and digital filters on a
single PCI card.
We have designed three successively faster and denser
generations of these circuits for use in mapping he brain, controlling
experiments, and as the article in Scientific American shows, eventually
these circuits can control prosthetic arms and legs in physically
challenged individuals. Our circuits have four times the
number of circuits on each card as used in Belle's interface, and are of
considerably higher density than the 'Harvey box' design.
The Harvey box is capable of only 128 neurons in a 19" rack, while
our system can support up to 1024 neurons in a PC. The Biographics
card also records the entire waveform in real time so that the
researcher can view any neuron within a few microns of the electrode
tip, greatly expanding the availability of the few probes that are
implanted.
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Control Panel with neuron traces
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9 DSP's on a PCI card for high performance
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