Chapter 1 Gsn Introduction; The Gsn 200 (Left) And The Hcgsn (Right) - Geodesic Sensor Net Technical Manual

chapter 1
GSN I
1
CHAPTER
E
GI's Geodesic Sensor Net (GSN) is designed to acquire dense-array EEG data
using a Geodesic EEG System (GES). This manual, the Geodesic Sensor Net
Technical Manual , describes the components of the Geodesic Sensor Net, their
integration, and use. It is also a maintenance and safety reference.
EGI currently offers two models of Geodesic Sensor Nets (Figure 1-1):
• GSN 200: the classic dense sensor array, available in densities of 64, 128, and 256
channels.
• HydroCel GSN (HCGSN): a sleeker dense sensor array, available in densities of
32, 64, 128, and 256 channels. The HCGSN features low-profile pedestals,
convenient wire management, shielded cables, and prominently marked sensor
tops. This model comes in two versions:
° with sponge inserts : each pedestal is installed with a sponge, allowing it to use
° without sponge inserts : each pedestal contains only an electrode (no sponge),
Geodesic Sensor Net Technical Manual
NTRODUCTION
EGI's HydroCel Saline electrolyte solution for 2-hour recordings.
which is individually filled by a syringe containing EGI's HydroCel HS
electrolyte formulation for 12-hour recordings.
Figure 1-1. The GSN 200 (left) and the HCGSN (right)
S-MAN-200-GSNR-001 • January 31, 2007
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