Geodesic Sensor Net - Infant Nets; Elefix Gel; Infant HCGSN Outrider Sensors

2: HCGSN
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Geodesic Sensor Net Technical Manual S-MAN-200-GSNR-001 • January 31, 2007
Infant Nets
Infant GSNs feature a slightly different structure from
the pediatric and adult models. Infant HCGSNs and
GSN 200s do not contain built-in inferior orbital
sensors but are made so that you can use optional,
separate outrider orbital sensors (Figure 2-10). The
orbital sensors plug into the special GSN
Hypertronics plug that is part of every infant GSN.
If used, orbital sensors are attached to the face of the
infant by means of medical tape or a gel such as
Elefix (Figure 2-11), which is supplied by EGI.
The Hypertronics connector for an infant GSN has jacks for connecting outrider
sensors. Table 2-1 lists the number of jacks for each infant HCGSN model and the
channels to which they map.
When you use an infant GSN, short to isolated common any jack on the connector that
does not have an outrider sensor plugged into it.
Caution!:
EGI recommends limiting recordings of infants to only 1 hour to
decrease the risk of skin irritation or breakdown. Constant monitoring of the infant
is required to prevent choking or strangling, and to allow for frequent examination for
skin irritation. EGI recommends checking for skin pressure points, overturned sensors,
and redness under the chin strap every 15 minutes to maximize infant comfort.
Table 2-1. Infant HCGSN outrider sensors
GSN model Number of jacks Map to channels . . .
32 channel infant HCGSN 4 29, 30, 31, and 32
64 channel infant HCGSN 4 61, 62, 63, and 64
128 channel infant HCGSN 4 125, 126, 127, and 128
Figure 2-10. Outrider sensor
Figure 2-11. Elefix gel