1: GSN Introduction
This manual discusses the GSN 200 and HCGSN together because they share many
similarities. References to Geodesic Sensor Net or GSN apply to both models, unless
otherwise noted. General information about their individual properties is provided in
Chapter 2, "HCGSN," and Chapter 3, "GSN 200." The models also have different
sensor layouts (see Appendix B, "Net Sizing and Sensor Layouts") because the
HCGSN is designed to provide more coverage of lower sections of the head.
Consequently, EEG files acquired with the older GSN 200 are incompatible with those
acquired with the newer HCGSN.
Safety
A complete list of safety cautions and warnings for the GSN is given in Chapter 4,
"Safety." You should read Chapter 4 while learning to use the Net and not use the Net
unless you understand all the cautions and warnings.
Intended Use
The Geodesic Sensor Net is intended for use in clinical and research settings, by
trained technicians, to measure and record the electrical activity of the brain. It is
designed to be used on adults, children, and infants. Its intended use is strictly
limited to EGI Geodesic EEG Systems, as stated in the applicable regulatory filings.
GSN Environmental Conditions
The GSN has been designed for use under the environmental conditions given in
Table 1-1.
Storage temperature
Operating temperature
Relative humidity
Maximum altitude
22
Table 1-1. Overall operating environment
0° to 47° C (32° to 116° F)
10° to 35° C (50° to 95° F)
5% to 95% noncondensing
3,048 m (10,000 feet)
Geodesic Sensor Net Technical Manual
S-MAN-200-GSNR-001 • January 31, 2007
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