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About Cogniscan
CogniScan: A Multichannel Recording and Data Analysis System for Cognitive Electrophysiology Experiments
CogniScan provides Data Acquisition and Data Reduction functions for use in a variety of EEG/ERP studies. The system
supports up to 128 channels utilizing standard, PC based data acquisition interfaces. Data acquired is streamed to
specially formatted disk files. Software tools permit evaluation of contact impedance to subject's head. A serial
interface is supported to coordinate the actions of computers used in the experiments. A marker channel is provided to
accurately record stimulus event timing. The data reduction tools help researchers with artifact rejection, epoch
windowing, and averaging.
The system was orignially developed for Princeton University’s Imaging Electrophysiology Laboratory. Created in LabView,
the program is flexible and may be modified for custom applications. Various universities and institutions are using
CogniScan with National Instruments data acquisition boards, Sensorium amplifiers, and Source Signal Imaging's EMSE
source locaization software. Stimulus presentation software such as PST's E-Prime and Neurobehavioral System's
Presentation have been sucessfully interfaced with CogniScan.
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Data Reduction System
Review / Display acquired data
Definition of marker conditions and epoch windows
Artifact rejection with configurable range checking
Data baselining function
Epoch selection / rejection rules
Epoch averaging
Manual deletion functions
Flexible file save operation
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Data Acquisition System
16 - 128 Input Channels
Sampling rates to 5,000 samples / second
Setup configurations saved as experiment protocols
Event marker channel provides accurate Stim/Acquisition timing
Configurable display screen of up to 32 channel traces
Graphical impedance display simplifies setup
Power spectrum mode for noise evaluation
Slave mode via RS-232 or Digital inputs
Output file flexibility
Use with E-Prime stimulus presentation software
Compatible with EMSE Suite functional imaging software
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Data Acquisition System >> |
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