CGX Quick-20r - Page 14

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The most important aspect of EEG recording is that
output data is only as good as the recording input. While
algorithms exist to remove artifacts, poorly recorded data
cannot be xed in post processing.
Recording good EEG data requires preparation of the
participant for optimal sensor contact:
1. Participants should have their hair recently washed
and fully dried before recording. Wet hair, hair gel,
conditioners, and hair spray may cause interference and
degrade signal quality.
2. Clean each sensor location on the head with a cotton
swab soaked with alcohol.
3. In the event of diculty establishing good contact, apply
a small amount of water between the sensor and scalp
to create an electrical bridge.
4. It is important for subjects to reduce tension in the
head, neck, and shoulders during readings.
ObtainingCleanEEGData
TypicalCleanDataRecording
This is a representation of a
clean data recording.
Quick-20r sensor locations
lie within 1.0 centimeters on
the vast majority of hand-
measured enhanced 10-20
placements on heads sized
from 52-62 centimeters. See
sizing chart on Page 27.