Cognionics CGX Mobile-128 매뉴얼 - 페이지 11

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Understanding Readings (20 Channels Shown For Clarity)

Muscle Artifact: Neck Tension

Headset Or Electrode Disruptions: Sensor Pops

Headset Or Electrode Disruptions: Head Movement

Neck tension may affect

channels on the back of the

head, predominantly O1/O2,

but also in parietal sensors

(Pz/P3/P4, P7/P8). Subjects

should be comfortably seated,

with appropriate bracing at

the back and neck. Avoid

slouching.

Brief disruptions in contact

between sensor and scalp

may cause "sensor pops" on

recordings. Occasional pops

can usually be ignored in

processing, but if the problem

persists, check the contact

between the sensor and

scalp. Wipe popping locations

with a small amount of alcohol

on the sensor.

Excess or quick movement

of the head may disrupt

connection between sensors

and scalp causing data

artifacts as shown.