 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. |
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 The system displays the acquired data on the screen for visual control and
stores the data to a flash memory. Each channel is sampled with 256 Hz.
Using a memory of 256 MB allows to acquire and store 8 channels of data for
17 h. With the 1GB storage it is possible to record about 70 h of data.
In addition to the data acquisition module, g.MOBIlab offers
paradigms used in biofeedback application based on EEG, EMG, respiration and
GSR data. An increasing/decreasing balloon e.g. allows the direct feedback
of the respiration. Another paradigm allows the regulation of cortical
DC-shifts or to compare 2 EMG channels. g.MOBIlab features also
brain-computer interface experiments.
The optional GPS module enables to record also
the actual location of the subject/coordinates simultaneously to the
biosignal data. This allows to track biosignal variations according to your
position and has its application e.g. in mountaineering. Depending on the
height, variations in the ECG and EEG can be logged. In telemonitoring
applications a GSM or WLAN module can be used to send the biomedical data
via the internet for remote analysis.Highlights
-
 acquire EEG, ECG, EOG, EMG, GSR, pulse and respiration
simultaneously on a standard Pocket PC
- on-line visualization and storage of up to 8 channels
- on-line feedback calculation
- download the data via a docking station
- transmit the acquired data with GSM or WLAN to your
hospital
- track your position with the GPS module simultaneously with the
biosignals
- can be combined with g.BSanalyze for off-line biosignal analysis
under MATLAB
Waterproof ruggedized Pocket PC (optional)
-
 for extreme
performance and reliability under extreme conditions
- 400 MHz CPU, 128
MB NAND Flash on board, 2xCF-slot, extra robust connectors
- tested for
millitary standards MIL-STD-810F: Methods 512.4 (IP67), 516.5, Procedure
IV, 507.4 and 510.4, Procedures I and II
- operation between
-30°C and +65°C
- 3800 mAh
rechargeable power pack for up to 30 hours operating time
Measure biosignals reliably even outside in the
Himalayas
 During an Austrian
expedition to Chulu Far West (6419 m) g.MOBIlab was used to measure
the effect of high altitude on the EEG and ECG parameters. The expedition
started in Besi Sahar at an altitude of 700 m near Annapurna I. The team
gained each day a height between 300 and 600 m and settled basecamp at 4800
m. After one night in BC the highcamp was established in 5600 m on the Chulu
glacier. At 3 p.m. in the morning the team started to climb Chulu Far West
(right picture) and reached the summit at 11 a.m. g.MOBIlab was used
to record 2 EEG channels over the sensorimotor areas and 1 ECG channel of 2
expedition members. The persons performed a self-paced finger movement every
10 seconds.The on-set and off-set of the movement was recorded by an
external switch connected to g.MOBIlab. EEG and ECG data recording at the Dachstein
glacier
 At the 2003 Nordic
Fitness Days at the Dachstein glacier organized by the Planaibahnen from
October 24th-26th g.MOBIlab was tested in measuring EEG and ECG data of
skiers and mountaineers going up the Dachstein summit with the cable car.
The study was part of the research program of the
ARGE Alpinmed. A total of 50 data sets were acquired within 3 days. Data
recordings started at a base station in 1200 m. Then physiological data of
subjects were measured in the cable car and at the top station in 2700 m.
The subjects had to perform a stimulus-reaction paradigm in order to test
the reliability of g.MOBIlab under bad weather and field conditions. In all
50 sessions data quality was excellent and even EEG data displayed high
signal-to-noise ratio. The g.MOBIlab system was rated excellent by the participants both for easy
handling, high data quality and reliability for performing physiological
measurements with experimental paradigms.
Excellent data quality
 g.MOBIlab is equipped
with low-noise biosignal amplifiers and a 16-bit A/D converter (256 Hz)
which guarantees excellent data quality and a high signal-to-noise ratio.
For sophisticated data analyses g.MOBIlab-data can be imported
directly into g.BSanalyze, the toolbox for advanced biosignal processing and
analyses.
Data can also be converted into ASCII-format for other programs like
MS-Excel or foreign toolboxes.
Package includes
- portable
biosignal analysis system g.MOBIlab
- pocket PC with charging device
- 1 switch for external triggering
- EEG/EOG connector box for 9
electrodes
- 5 lead ECG/EMG patient cable
Accessories
- piezoelectric respiration sensor
- photoelectric pulse sensor
- galvanic skin response sensor (GSR)
- GPS module
- GSM, WLAN
- CF data storage with 256 MB, 512 MB
or 1 GB
- Programming API for feedback and
data processing applications
- heavy-duty case (100 % water-proof)
- waterproof ruggedized Pocket PC
- battery extender
- electrode cap, electrodes
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