6.5.6 CHAT Standardized Recording Montage

The use of this recording montage requires the use of CHAT standardized sensors and placement.
The signals to collect do not have to be in any specific order but all must be present on recording.
All EOG, EEG signals must be collected to reference. When possible, Chin EMG, Leg EMG and ECG signals will be collected to reference.
Sampling rates for signal collection are minimum rates and may be exceeded depending on rates offered by the acquisition system. Sampling rates should be the same among like channels (i.e.: EEG, EMG, Respiratory signals).
Signals will be collected unfiltered (at hardware settings). This may vary according to the acquisition system.
Peak-to-Peak Range of Amplifier may not be adjustable, depending on acquisition system but must allow for adequate display of the signal.
60 Hz filter may be on for collection
Established names for respiratory signals may be preserved if the laboratory provides clear indication of its meaning

Signals (Type) to Collect	Name of signal	Minimum Sampling Rate (Hz) (may be exceeded)	Amplifier Peak-to-Peak (peak-peak must fit the expected size of signal)	Amplifier Polarity for Collection
Reference	REF	200
Ground		200
L eye movement	E1	200	1 MV to 6 MV	+↑
R eye movement	E2	200	1 MV to 6 MV	+↑
F3	F3	200	1 MV to 6 MV	+↑
F4	F4	200	1 MV to 6 MV	+↑
C3	C3	200	1 MV to 6 MV	+↑
C4	C4	200	1 MV to 6 MV	+↑
T3	T3	200	1 MV to 6 MV	+↑
T4	T4	200	1 MV to 6 MV	+↑
O1	O1	200	1 MV to 6 MV	+↑
O2	O2	200	1 MV to 6 MV	+↑
M1	M1	200	1 MV to 6 MV	+↑
M2	M2	200	1 MV to 6 MV	+↑
L Chin EMG	Lchin	200	1 MV to 6 MV	+↑
R Chin EMG	Rchin	200	1 MV to 6 MV	+↑
C Chin EMG	Cchin	200	1 MV to 6 MV	+↑
ECG1	ECG1	200	1 MV to 6 MV	+↑
ECG2	ECG2	200	1 MV to 6 MV	+↑
ECG3	ECG3	200	1 MV to 6 MV	+↑
RLeg1 EMG	RLeg1	200	6 MV to 20 MV	+↑
RLeg2 EMG	RLeg2	200	6 MV to 20 MV	+↑
LLeg1 EMG	LLeg1	200	6 MV to 20 MV	+↑
LLeg2 EMG	LLeg2	200	6 MV to 20 MV	+↑
Nasal/Oral Airflow	Airflow	32	40 uV to 2 MV	+↑
Nasal Pressure	CannulaFlow	128	20 uV to 2 MV	+↑
Thoracic IP	Chest	32	20 uV to 10 MV	+↑
Abdominal IP	ABD	32	20 uV to 10 MV	+↑
IP Sum	SUM	32	20 uV to 10 MV	+↑
Oximetry (SpO2) Plethysomnography wave form	SAO2 Pleth (or other quality indicator)	10 or highest allowable rate	Set (0 to 1 V)
Position	Position	1.0-10	Set (500 MV to5V)
Capnography waveform numerical	EtCO2-W	32	Set (0 to 1 V)
Capnography waveform numerical	EtCO2#	15	Set (0 to 1 V)
The following signal is not obligate for CHAT. Collect if done clinically.
Snore Mic	Snore	200	24 uV to 1 MV	+↑

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Childhood Adenotonsillectomy Trial