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32 to 128 Channel Data Acquisition System
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The CEREBUS data acquisition system is a scalable embedded on-line system for
recording and processing neural signals for up to 128 extracellular electrodes.
The front-end modules amplify, pre-filter, and digitize the neural signals and
transmit them by fiber-optic data links to a central neural signal processing
module.
The neural signal processing unit contains an array of up to 8 data signal
processors for final filtering and
on-line analysis of the neural signals. The neural signal processor module then
transmits the processed data to a host PC system via Ethernet data link.
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- Up to 128-channels of unit responses to be stored as spike waveforms,
or continuous waveforms on a PC
- Additional analog and digital inputs can be used to record experimental
and environmental data, such as stimuli onset and offset or the position
of a joystick.
- The data acquisition provides user-friendly control interfaces with auto
or manual thresholding for spike extraction
Filtering and Noise Reduction
- High and low pass filters with cut-off frequencies at .3 Hz and 7.5
kHz
- The 5th order Butterworth filtering
aggressively rejects extrinsic noise
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- The Cerebus™ data acquisition software provides on-line or
off-line classification of single-units from multi-unit activity
on each electrode
- User-generated time-amplitude templates are used to
classify up to 128 channels of data
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The output provides the recorded data in the form of identified
time-stamped unit activity
- The Spike Panel, Raster Plot and Activity Map displays allow
the user to better visualize the experimental data
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| Sorting and classification of up to 128 spikes |
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- Ultra-compact design
- Fiber optic digital connections for flexible configurations and reduced
system noise
- Simultaneous spike and local field potential recordings from the same
electrodes
- On-line spike classification
- Analog and digital inputs for experiment information
- Parallel multi-user, multi-PC control and operation
- Interface with Neuroexplorer®, Matlab®, Spike 2® and others for analysis.
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Single Neural
Channel
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Single Neural
Channel Raster Plot
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Activity Map
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| 10 x 10 Cyberkinetics™ Array |
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Manufactured from biocompatible materials:
high puritysilicon, Parylene-C, platinum and glass
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- Up to 100 sharpened electrodes—1.0 to 1.5 mm
- long— projecting from a silicon substrate
with a thickness of 0.25 mm
- Each electrode is electrically isolated from its
neighbor by non-conducting glass and has an active
electrode tip approximately 50 µm in
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CerePort™128 Channel Connector |
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which is coated with platinum
- Spacing between the electrodes is 400 µm
- Electrode impedances range from 100 to 800 k
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