Multi-modal data acquisition system with active electrodes

ActiveTwo is a powerful new high-resolution biosignal acquisition system that incorporates some revolutionary concepts.  Active electrode technology is just one of the significant innovations in the ActiveTwo system.  By placing active electronics within millimeters of the actual electrode contact, ActiveTwo virtually eliminates the need to prepare the scalp before applying electrodes.  This can cut measurement preparation time by an estimated 15 -30 minutes for most laboratories! 

ActiveTwo can also be equipped with additional sensors for respiration, skin conductance, temperature, plethysmograph (pulse) and other parameters.  An optional isolated analog input box makes it possible to acquire almost any type of signal synchronously with the signals sampled by the ActiveTwo A/D box.

As an added benefit, ActiveTwo comes with powerful data acquisition software developed in National Instruments' LabView.  We provide the compiled software so you do not need to own LabView, and you do not need to be a programmer to operate the system.  For those laboratories with programming resources, the source code is provided so that you can add any special features that you may need. 

Mobile biosignal acquisition and processing on the Pocket PC

g.MOBIlab - g.tec's portable biosignal acquisition and analysis system - is the perfect tool for recording multimodal biosignal data on a standard Pocket PC. This allows to investigate brain-, heart-, muscle-activity, eye movement, respiration, galvanic skin response and other body signals.  g.MOBIlab comes with 4 EEG/EOG, 2 ECG/EMG channels and 2 analog inputs which can be utilized for other sensors. A switch can be connected for external triggering of the data.

Multi-modal data acquisition under MATLAB

g.DAQsys is the perfect tool for all kinds of data acquisition from physiological research to applied industrial research. The system runs under MATLAB and provides data acquisition, online visualization and storage of up to 64 channels. In addition to the PC–version (with application dependent 16, 32 or 64 channels) we offer a portable version with 16 or 32 analog channels. g.DAQsys allows the simultaneous acquisition and analysis of biosignals and external signals.

A special connector box gives access to all inputs and outputs for communication with external devices such as g.BSamp and g.STIMunit.

Powerful EEG / ERP Post-processing and Dipole Source Modeling

BESA (Brain Electrical Source Analysis) is the most widely used software for source analysis and dipole localization in EEG and MEG research. BESA has been developed on the basis of 18 years experience in human brain research by Michael Scherg, University of Heidelberg, and Patrick Berg, University of Konstanz. BESA is a highly versatile and user-friendly Windows® program with optimized tools and scripts to preprocess raw or averaged data for source analysis. All important aspects of source analysis are displayed in one window for immediate selection of a wide range of tools. BESA provides a variety of source analysis algorithms, a standardized realistic head model (FEM), and allows for fast and easy hypothesis testing and integration with MRI and fMRI.  

Modular biosignal analysis and multimodal integration suite

EMSE Suite 5.1 is a superb, modular solution for the full range of EEG / MEG and multimodal neuroimaging applications, and the capabilities of the software lend themselves to analysis of ECG / BSPM data as well.  EMSE Suite includes a set of powerful tools for source localization and combination of biosignal results with other imaging modalities, such as MRI, CT, fMRI and PET.  EMSE's modular architecture allows modules to operate independently or as a tightly-integrated suite. 

Multi-modal off-line biosignal analysis under MATLAB

(PREREQUISITE: MATLAB 6.5, Signal Processing Toolbox !)

g.BSanalyze - gtec's Biosignal Analysis software is an interactive environment for multimodal biosignal data processing and analysis in the fields of clinical research and life sciences.  The investigation of patterns and signal features of biosignals allows to observe non-invasively brain, heart- and muscle functions and dysfunctions. 

Convenient 3D position measurement software

When used together with Fastrak or Patriot digitizing hardware, Locator allows you to measure accurately landmarks, electrode locations and external head/body shape in 3 dimensions. These data may then be used for coregistration of surface measured potentials with anatomical / functional image data and to improve the precision of mapping and source estimation.  

Accurate, inexpensive 3D position measurement

Finally, a solution for 3D electrode localization that everyone can afford - Patriot!

It's smaller, lighter, more compact and less expensive than previous models, yet the Patriot sports accuracy and resolution that are well matched to the task of electrode position measurement.

Best of all, Patriot, when coupled with the Locator software, is a very fast way to measure electrode positions.  Consider this -- your total time commitment for electrode position measurement is approximately 2 seconds per electrode (roughly 2 minutes for 64 channels or 4 1/2 minutes for 128 channels. 

Fast, accurate 3D position measurement and motion tracking

The Fastrak 3D Digitizer is the most accurate electromagnetic tracking system available, and it is the perfect solution for localization of electrodes and body landmarks in preparation for the coregistration of surface measured potentials with anatomical/functional images in EMSE Suite or BESA.  Fastrak is controlled by the Locator software, which acquires and displays 3D position measurements for electrodes, fiducial landmarks and other points on the body surface.

High-precision program for stimulus delivery and experimental control

Presentation is Windows 98/ME/2000/XP compatible, yet it provides sub-millisecond temporal precision and complete timing information for all stimulus and response events.  It operates on standard PC hardware, and handles multiple tasks including simultaneous video and auditory stimulus delivery, responses and interrupt registration, trigger input/output, etc.  The software is fully adaptive and easy to program.  Presentation is optimized for behavioral and physiological experiments using fMRI/ERP/MEG and single neuron recording.  Presentation development has been generously supported by NINDS.

Experimental lab software

SuperLab is a superb Windows- and Mac-based software application for stimulation and activation.  SuperLab is one of the the most widely-used computerized stimulation tools available.  SuperLab can display color graphics of your choice, play digital audio or video files and send event triggers to external devices such as other types of stimulators.  The software supports a variety of subject input devices, including RB-Series Reponse Pads, voice response device or keyboard.  SuperLab also incorporates precise mechanisms for triggering data acquisition systems for EEG / MEG studies.  The collected reaction time and response accuracy data are saved in text files which can be imported easily into spreadsheet, statistics and signal analysis software.  SuperLab Pro is the easiest stimulation software to use, bar none. The tutorial chapter in the manual helps new users come up to speed in less than an hour. 

Real-time visual, auditory and tactile stimulation unit

The g.tec MATLAB based multi-modal stimulation unit is a highly flexible and user-adaptable tool for application in all fields of brain and life sciences.  g.STIMunit provides standard paradigms for motor–, cognitive–, perceptual tasks and biofeedback. All standard paradigms can be modified with an integrated paradigm parser. Users can easily set up their own experimental sequences in different modalities (visual, auditory or tactile). The system has several analog input channels to read biosignals or external signals (pressure, acceleration, movement,...) into g.STIMunit. The system can be used to extract specific features and to present the results to subjects/patients on the computer display. Accessories include external switches/keyboard to log subject responses. g.STIMunit supports the setting of external triggers for communication with other systems. Use g.DAQsys to acquire biosignal data during paradigm presentation and g.RTsys to calculate specific parameters in real–time in order to integrate the results in your g.STIMunit paradigm.

For ERP and behavioral testing applications

We offer a variety of manual response pads that are compatible with both SuperLab,  Presentation and a variety of other commercial/freeware stimulus delivery software programs.  These response boxes use a state of the art, low-power microcontroller to detect button presses, encode them, and send them to the serial port.  Switch debouncing is performed by the microcontroller, guaranteeing that each button-press produces only one signal. 

Measure vocal reaction time precisely

SV-1 is a device designed specifically for experiments requiring a vocal response. SV-1 monitors the participant's voice level at all times, and when the level rises above a user-specified threshold, it reports this to the computer.  The first such device to be developed for over a decade, SV-1 packs some advanced features.

Battery powered constant current or constant voltage stimulators

Brief pulses of electricity are used in various biomedical research applications as a stimulus to excite nerve or muscle fibers.  In EP research, electrical stimulation is commonly used to elicit somatosensory evoked potentials.  Several factors need to be considered to choose the right stimulator for your application.

Useful tools to have around the lab

We offer a variety of general purpose instruments that can be useful to have around the laboratory for testing and troubleshooting.  For the most part, these utilities are for general purpose use, and they can be used with a variety of brands of lab equipment. 

One convenient source for lab supplies

We offer competitive prices on consumable supplies for all of the products we sell.  If you need something you don't find here, let us know, and we may be able to add it to the list of items we keep in stock for your convenience.  All consumable supplies orders may be ordered on-line and / or paid for by credit card.