added APPLES, and new POPS v1

7c9c93df · Purcell, Shaun M.,Ph.D. · d1a407e8 · 7c9c93df · 7c9c93df · 7c9c93df
Commit 7c9c93df authored Nov 18, 2022 by Purcell, Shaun M.,Ph.D.
--- a/common/resources/canonical/apples/apples.sigs
+++ b/common/resources/canonical/apples/apples.sigs
+
+let volt  = V,volt
+let mvolt = mV,millivolt,milli-volt,mvolt,m-volt
+let uvolt = uV,microvolt,micro-volt,uvolt,u-volt
+
+%
+% EEG 
+%
+
+C3_M2
+ req:
+  sig = EEG_C3_A2
+  unit = volt
+  unit = mvolt	
+  unit = uvolt
+  unit = unknown,.
+ set:
+  unit = uV
+  sr = 128
+
+C4_M1
+ req:
+  sig = EEG_C4_A1
+  unit = volt
+  unit = mvolt
+  unit = uvolt
+  unit = unknown,.
+ set:
+  unit = uV
+  sr = 128
+
+O1_M2
+ req:
+  sig = EEG_O1_A2
+  unit = volt
+  unit = mvolt
+  unit = uvolt
+  unit = unknown,.
+ set:
+  unit = uV
+  sr = 128
+
+O2_M1
+ req:
+  sig = EEG_O2_A1
+  unit = volt
+  unit = mvolt
+  unit = uvolt
+  unit = unknown,.
+ set:
+  unit = uV
+  sr = 128
+
+
+%
+% Respiratory channels
+%
+
+abdomen <- Effort_Abd
+
+thorax <- Effort_Tho
+
+
+%
+% Oxygen
+%
+
+SpO2 <- SpO2
+
+
+%
+% Chin EMG
+%
+
+EMG <- EMG_Chin
+
+
+%
+% EOG
+%
+
+LOC <- EOG_Left
+
+ROC <- EOG_Right
+
+%
+% Leg EMGs
+%
+
+LEG <- Leg_LAT_RAT Leg_LAT.RAT Leg_LEGS
+
+%
+% Pulse
+%
+
+pulse <- pulse
+
+%
+% Snore
+%
+
+snore <- snore
+
+%
+% ECG
+%
+
+ECG <- ECG
--- a/common/resources/canonical/emg.txt
+++ b/common/resources/canonical/emg.txt
@@ -2,9 +2,9 @@
 % -------------------------------------------------------------------------
 %
 % Surface electromyography (EMG) 
+%   - assumes 1,2,3 = C,L,R
+%   - assumes L-R and R-L are equivalent
 %
-% assumes 1,2,3 = C,L,R
-% assumes L-R and R-L are equivalent, etc
 % -------------------------------------------------------------------------

 let central_chin=EMG1,Chin1,Chin1_EMG,Chin-C,EMG/C,C_Chin,CCHin,Chin-Ctr
@@ -20,7 +20,7 @@ let chin_right_central=Chin3-Chin1,Chin_3-Chin_1,EMG3-EMG1,EMG_Chin3-Chin1,RChin
 let chin_left_right=chinIII,Chin2-Chin3,Chin_2-Chin_3,EMG2-EMG3,EMG_Chin2-Chin3,LChin-RChin,L_Chin-R_Chin,EMG_Chin2_Chin3
 let chin_left_right=chinIII=Chin3-Chin2,Chin_3-Chin_2,EMG3-EMG2,EMG_Chin3-Chin2,RChin-LChin,R_Chin-L_Chin,EMG_Chin3_Chin2

-let chin=chin,EMG,EMG_chin,Chin_EMG,Chin_EMG_Gnd
+let chin=chin,EMG,EMG_chin,Chin_EMG,Chin_EMG_Gnd,EMG_sm

 EMG
 req:

--- a/common/resources/canonical/eog.txt
+++ b/common/resources/canonical/eog.txt

-
 % -------------------------------------------------------------------------
 %
 % EOG channels; preferred both referenced against M2
@@ -21,15 +20,18 @@ let right_eog=EOG_R_Ref
 let left_eog_right_mastoid_ref=E1_M2,E1-M2,E1_M2,E1_A2,E1-A2
 let left_eog_right_mastoid_ref=EOG_LOC-M2,EOG_LOC_M2,LOC/M2,LOC-M2,LOC_M2,EOGL-M2
 let left_eog_right_mastoid_ref=EOG_LOC-A2,EOG_LOC_A2,LOC/A2,LOC-A2,LOC_A2,EOGL-A2
+let left_eog_right_mastoid_ref=LOC_A2,LOC_M2

 let right_eog_right_mastoid_ref=E2_M2,E2-M2,E2_M2,E2_A2,E2-A2
 let right_eog_right_mastoid_ref=EOG_ROC-M2,EOG_ROC_M2,ROC/M2,ROC-M2,ROC_M2,EOGR-M2
 let right_eog_right_mastoid_ref=EOG_ROC-A2,EOG_ROC_A2,ROC/A2,ROC-A2,ROC_A2,EOGR-A2
+let right_eog_right_mastoid_ref=ROC_A2,ROC_M2

 % also include right EOG against left ref.
 let right_eog_left_mastoid_ref=E2_M1,E2-M1,E2_M1,E2_A1,E2-A1
 let right_eog_left_mastoid_ref=EOG_ROC-M1,EOG_ROC_M1,ROC/M1,ROC-M1,ROC_M1,EOGR-M1
 let right_eog_left_mastoid_ref=EOG_ROC-A1,EOG_ROC_A1,ROC/A1,ROC-A1,ROC_A1,EOGR-A1
+let right_eog_left_mastoid_ref=ROC_A1,ROC_M1

 %% rules
 % AASM standard has LOC and ROC both referenced against M2
@@ -41,7 +43,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -53,7 +55,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -64,7 +66,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -77,7 +79,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -89,7 +91,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -102,7 +104,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -114,7 +116,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -129,7 +131,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -140,7 +142,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
--- a/common/resources/canonical/harm.txt
+++ b/common/resources/canonical/harm.txt
@@ -526,7 +526,6 @@ OZ_LM
 set:
  unit = uV

-
 % -------------------------------------------------------------------------
 %
 % EOG channels; preferred both referenced against M2
@@ -548,15 +547,18 @@ let right_eog=EOG_R_Ref
 let left_eog_right_mastoid_ref=E1_M2,E1-M2,E1_M2,E1_A2,E1-A2
 let left_eog_right_mastoid_ref=EOG_LOC-M2,EOG_LOC_M2,LOC/M2,LOC-M2,LOC_M2,EOGL-M2
 let left_eog_right_mastoid_ref=EOG_LOC-A2,EOG_LOC_A2,LOC/A2,LOC-A2,LOC_A2,EOGL-A2
+let left_eog_right_mastoid_ref=LOC_A2,LOC_M2

 let right_eog_right_mastoid_ref=E2_M2,E2-M2,E2_M2,E2_A2,E2-A2
 let right_eog_right_mastoid_ref=EOG_ROC-M2,EOG_ROC_M2,ROC/M2,ROC-M2,ROC_M2,EOGR-M2
 let right_eog_right_mastoid_ref=EOG_ROC-A2,EOG_ROC_A2,ROC/A2,ROC-A2,ROC_A2,EOGR-A2
+let right_eog_right_mastoid_ref=ROC_A2,ROC_M2

 % also include right EOG against left ref.
 let right_eog_left_mastoid_ref=E2_M1,E2-M1,E2_M1,E2_A1,E2-A1
 let right_eog_left_mastoid_ref=EOG_ROC-M1,EOG_ROC_M1,ROC/M1,ROC-M1,ROC_M1,EOGR-M1
 let right_eog_left_mastoid_ref=EOG_ROC-A1,EOG_ROC_A1,ROC/A1,ROC-A1,ROC_A1,EOGR-A1
+let right_eog_left_mastoid_ref=ROC_A1,ROC_M1

 %% rules
 % AASM standard has LOC and ROC both referenced against M2
@@ -568,7 +570,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -580,7 +582,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -591,7 +593,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -604,7 +606,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -616,7 +618,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -629,7 +631,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -641,7 +643,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -656,7 +658,7 @@ LOC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -667,7 +669,7 @@ ROC
  unit = volt
  unit = mvolt
  unit = uvolt
-  sr-min = 100
+  sr-min = 50
  scale = AC
 set:
  unit = uV
@@ -675,9 +677,9 @@ ROC
 % -------------------------------------------------------------------------
 %
 % Surface electromyography (EMG) 
+%   - assumes 1,2,3 = C,L,R
+%   - assumes L-R and R-L are equivalent
 %
-% assumes 1,2,3 = C,L,R
-% assumes L-R and R-L are equivalent, etc
 % -------------------------------------------------------------------------

 let central_chin=EMG1,Chin1,Chin1_EMG,Chin-C,EMG/C,C_Chin,CCHin,Chin-Ctr
@@ -693,7 +695,7 @@ let chin_right_central=Chin3-Chin1,Chin_3-Chin_1,EMG3-EMG1,EMG_Chin3-Chin1,RChin
 let chin_left_right=chinIII,Chin2-Chin3,Chin_2-Chin_3,EMG2-EMG3,EMG_Chin2-Chin3,LChin-RChin,L_Chin-R_Chin,EMG_Chin2_Chin3
 let chin_left_right=chinIII=Chin3-Chin2,Chin_3-Chin_2,EMG3-EMG2,EMG_Chin3-Chin2,RChin-LChin,R_Chin-L_Chin,EMG_Chin3_Chin2

-let chin=chin,EMG,EMG_chin,Chin_EMG,Chin_EMG_Gnd
+let chin=chin,EMG,EMG_chin,Chin_EMG,Chin_EMG_Gnd,EMG_sm

 EMG
 req:
@@ -752,8 +754,8 @@ let RA_electrode=RA,ECG1,EKG1,ECG_R,ECGR,EKGR,ECG1-REF,ECG1_REF
 let LA_electrode=LA,ECG2,EKG2,ECG_L,ECGL,EKGL,ECG1-REF,ECG2_REF
 let LL_electrode=LL,ECG3,EKG3,ECG_LL,ECG1-REF,ECG2_REF

-% leads; if a single ECG channel present, assume is lead I bipolar  
-% othewise, create explicitly from the existing channels
+% leads; if a single ECG channel present, assume lead I is bipolar  
+% otherwise, create explicitly from the existing channels

 let ecg_lead1=ECG_LA-RA,ECG1-ECG2

@@ -829,70 +831,104 @@ ECG
 %
 % -------------------------------------------------------------------------

-let abdomen=abdomen,ABD,Abdmn,Abdo,ABDOM,Abdomen,Abdomen.1,Abd.1,Abd2,Abdominal
-let abdomen=Effort_ABD,ABDO_EFFORT,A-Effort,Abdomen_EG,Resp_Abdominal,Abdo_Res,Resp_Abdomen,EEG_Abd
+let abdomen=abdomen,ABD,Abdmn,Abdo,ABDOM,Abdomen,Abd2,Abdominal
+let abdomen=Effort_ABD,ABDO_EFFORT,A-Effort,Abdomen_EG,Resp_Abdominal,Abdo_Res,Resp_Abdomen
+let abdomen=EEG_Abd,AbdDC,ABDM

-let thorax=thorax,Thorax.1,Thoracic,THOR_RES,Thor,Thorax_EG,THO,THOR_EFFORT,Effort_THO,Resp_Thoracic
-let thorax=Chest,Chest1,Resp_Chest,EEG_Chest,RIB_CAGE
+let thorax=thorax,Thoracic,THOR_RES,Thor,Thorax_EG,THO,THOR_EFFORT,Effort_THO,Resp_Thoracic
+let thorax=Chest,Chest1,Resp_Chest,EEG_Chest,RIB_CAGE,ChestDC

-let sum=sum,Subm,THOR+ABDO,Sum_
+let sum=sum,THOR+ABDO,Sum_

 % rules (note: variables are not expanded for canonical channel labels)

 abdomen
 req:
  sig = abdomen
+  unit=mV,uV,V,Volts,.,none
+ set:
+  unit=mV

 thorax
 req:
  sig = thorax
+  unit=mV,uV,V,Volts,.,none
+ set:
+  unit=mV

 sum
 req:
  sig = sum
-
+  unit=mV,uV,V,Volts,.,none
+ set:
+  unit=mV
+  
 % -------------------------------------------------------------------------
 %
-% Airflow: thermister & nasal pressure cannula
-%
+% Airflow: thermistor & nasal pressure cannula
+%Stages St. Luke's uses Nasal_therm term for thermistor
 % -------------------------------------------------------------------------

 % thermistor
+%chat uses PVDF, we decided to map to thermistor

-let therm=therm,TERM,Thermistor,Oral_Thermistor,Nasal/Oral,Aux_AC,EEG_Therm,Thermistor_EG
+let thermistor=therm,Thermistor,EEG_Therm,Thermistor_EG,AIRFLOW,nasalflow
+let airflow=air,Airflow1,AIR_FLOW,Flow_EG,NasalSn,Nasal_Therm
+let thermistor=oralflow,AIR,airlfow,NasOr,NasOr2


 % nasal pressure transducer
+% removed N_Pres and N.Press they were in the Stages cohort and were not legitimate signals

-let nas_pres=CannulaFlow,CanulaFlow,Cannula,Cannula_Flow,CannulaFow,CannnulaFlow,CannlulaFlow,CannualFlow
-let nas_pres=CannulaNasal,Nasal_Cannula,NASAL_PRES,Nasal_Pressure
-let nas_pres=Nasal,Nasal.1,NasalP,NASAL_PRESS,PNasal,NASAL_FLOW,Nasal_EG,nFlow
-let nas_pres=NPAF,NP,NPV,NPV_flow,PN,NAF,PNEUMFLOW,PTAF,Ptrans,Prongs,Pressure,Pres
+let nasal_pres=CannulaFlow,CanulaFlow,Cannula,Cannula_Flow,CannulaFow,CannnulaFlow,CannlulaFlow,
+let nasal_pres=CannualFlow,CannulaNasal,Nasal_Cannula,NASAL_PRES,Nasal_Pressure
+let nasal_pres=Nasal,NASAL_PRESS,Nasal_EG, PTAF
+let nasal_pres=NP,Pressure,Pres,nas_pres,DC_Nasal_Canual


 % Unspecified airflow channels (info may be in the transducer fields)

-let airflow=airflow,flow,Airflow,Flow_A10,Flow_CU,Flow_Patient
-let airflow=air,Airflow1,AIR_FLOW,Flow_EG,Flo
-let airflow=Resp_Airflow,Resp_Flow,Resp_FLOW-Ref,Resp_Airflow+-Re
+let airflow=flow,Flow_Patient
+let airflow=Resp_Airflow,Resp_Flow,Resp_FLOW-Ref,Resp_Airflow+-Re,NasalDC
+let airflow=Flow_Aux4
+

 % rules
 % TODO: add in transducer rules for generic airflow channels

-therm
+thermistor
 req:
-  sig = therm
+  sig = thermistor
+  unit=mvolt
+  unit=uvolt
+  unit=unknown,.,*
+  

-nas_pres
+nasal_pres
 req:
-  sig = nas_pres
+  sig = nasal_pres
+  unit=mvolt
+  unit=uvolt
+  unit=mbar
+  unit=ubar
+  unit=unknown,.
+
+nasal_pres
+ req:
+  sig = airflow
+  unit=mbar
+  unit=ubar

 airflow
 unless:
-  therm
-  nas_pres
+  thermistor
+  nasal_pres
 req:
  sig = airflow
+  unit=mvolt
+  unit=uvolt
+  unit=unknown,.
+ 


 % -------------------------------------------------------------------------
@@ -901,13 +937,23 @@ airflow
 %
 % -------------------------------------------------------------------------

-let SpO2=SpO2,SAO2,SAT,SpO2_EG,SA02,SO02,PaO2
+let SpO2=SpO2,SAO2,SAT,SpO2_EG,SA02,SO02,PaO2,SPO2__2_,Sa02masimo,SA02nonin,SAO2External,Nonin_sat
+let SpO2=SAO2masimo,SAO2Nellcor,SAO2ninon,SAO2noin,A_SpO2,SAO2nonin,SA02nonin,SpO2Sta,SpO2x,SpO2xx

 SpO2
 req:
  sig = SpO2
+  unit = percent,.,*

+let Pleth=pleth,plethmasimo,plethmasino,plethnellcor,plethwv,pletmasimo,PPG

+Pleth
+ req:
+  sig = Pleth
+  unit=V
+  unit=uV
+  unit=mV
+  unit=none,.
 % -------------------------------------------------------------------------
 %
 % (Derived) Heart rate (BPM) 
@@ -925,8 +971,8 @@ HR
 % Plethysmography (volume of blood, from oximetry signal)
 %
 % -------------------------------------------------------------------------
-
-let pleth=pleth,Plethysmogram,Plesmo,PlethWV,RD-Pleth,RD-Pleth_EG
+let pleth=pleth,Plethysmogram,Plesmo,PlethWV,RD-Pleth,RD-Pleth_EG,Plethmasimo,PlethMasino
+let pleth=PlethNellcor,PletMasimo

 pleth
 req:
@@ -945,105 +991,328 @@ pulse
 req:
  sig = pulse
 % -------------------------------------------------------------------------
+
 %
+
 % Surface EMG monitoring of limb muscles
+
 %
+
 % -------------------------------------------------------------------------

-let left_leg1=EEG_LLeg1,LLEG1,LEFT_LEG1,L_LEG1,L_LEG_1,LLeg3,LegsL_Leg1 
-let left_leg2=EEG_LLeg2,LLEG2,LEFT_LEG2,L_LEG2,L_LEG_2,LLeg4
-let right_leg1=RLEG1,RIGHT_LEG1,EEG_RLeg1,R_LEG1,R_LEG_1,RLeg5
-let right_leg2=RLEG2,RIGHT_LEG2,EEG_RLeg2,R_LEG2,R_LEG_2,RLeg6
-let left_right_leg=lleg_r,lleg1_2

-% pre-computed bilateral LATs and RATs
-let left_leg=LLEG,L_LEG,LLeg1_LLeg2,LEFT,Leg_Ltibial,L_Legs,lleg1_2,EMG_LLEG_LLEG2,EMG_LLEG__LLEG_, EMG_LAT1_LAT2,LAT1_LAT2

+% generate LAT and RAT, allowing for three transducer types

-let right_leg=RLEG,R_LEG,RLEG1_RLeg2,Leg_Rtibial,RIGHT,R_Legs,rleg1_2,EMG_RLEG_RLEG2,EMG_RLEG__RLEG_,EMG_RAT1_RAT2, RAT1_RAT2
+%  EMG, piezo and unknown

-%piezo monitoring of limb muscles
-let left_leg_piezo=L_Leg, lleg,Leg_L,LegL
-let right_leg_piezo=R_Leg, rleg,Leg_R,LegR
-let leg_piezo=Leg
+%

-let left_leg1_unknown=LLeg1,leg_1,Leg_12
-let left_leg2_unknown=LLeg2,Leg_2,Leg_22
-let right_leg1_unknown=rleg1
-let right_leg2_unknown=RLeg2
-let left_leg_unknown=LLeg1,LLEG,L_Leg,LAT,Leg_L_LEG
-let right_leg_unknown=RLeg,R_Leg,RAT
-let left_right_unknown=lleg_r,EMG_LLeg_RLeg
+% expected EMG signals typically either have two channels per leg (which

-% rules
+% will need to be re-referenced to each other) or one bipolar signal
+
+% per leg (i.e. already re-referenced). Piezo will only have one
+
+% signal per leg
+
+
+
+
+
+%
+
+% Channel   + Transducer         --> Inferred type
+
+% -------------------------------------------------
+
+% EMG       + any/none           --> EMG
+
+% generic   + EMG                --> EMG
+
+% piezo     + any/none           --> piezo    (no current examples/rules)
+
+% generic   + piezo              --> piezo
+
+% generic   + unknown/none       --> unknown
+
+
+
+
+
+% EMG has two leads per leg, versus piezo only has one,
+
+% assume that channels indicating >1 lead == EMG
+
+
+
+
+
+%
+
+% Define generic left/right leg fields
+
+%  (i.e. presumably piezo OR bipolar EMG)
+
+%
+let left_leg=LLEG,L_LEG,LEFT,Leg_L,LegL,Leg_Ltibial,L_Legs,LATl,LegsL_Leg1,L_Leg1,L_LEG_1
+let left_leg=LLeg3,L_Leg2,L_LEG_2,LLeg4,Leg_L_LEG,LAT
+
+let right_leg=RLEG,R_LEG,RIGHT,Leg_R,LegR,Leg_Rtibial,R_Legs,RAT,R_LEG1,RLEG1,RLeg5,RLEG_2
+let right_leg=RLEG2,RLeg6
+
+let leg=leg
+
+let leg1=leg_1
+
+let leg2=Leg_2
+
+%
+
+% EMG-specific rules (indicated by presence of >1 channel per leg in labels)
+
+%
+
+% 4-lead EMG channels (2 channels per leg: implies EMG)
+
+let left_leg1_emg=LLEG1,LEFT_LEG1,L_LEG1,L_LEG_1
+let left_leg1_emg=EEG_LLEG1,EEG_LEFT_LEG1,EEG_L_LEG1,EEG_L_LEG_1
+let left_leg1_emg=EMG_LLEG1,EMG_LEFT_LEG1,EMG_L_LEG1,EMG_L_LEG_1
+let left_leg2_emg=LLEG2,LEFT_LEG2,L_LEG2,L_LEG_2
+let left_leg2_emg=EEG_LLEG2,EEG_LEFT_LEG2,EEG_L_LEG2,EEG_L_LEG_2
+let left_leg2_emg=EMG_LLEG2,EMG_LEFT_LEG2,EMG_L_LEG2,EMG_L_LEG_2
+
+let right_leg1_emg=RLEG1,RIGHT_LEG1,R_LEG1,R_LEG_1
+let right_leg1_emg=EEG_RLEG1,EEG_RIGHT_LEG1,EEG_R_LEG1,EEG_R_LEG_1
+let right_leg1_emg=EMG_RLEG1,EMG_RIGHT_LEG1,EMG_R_LEG1,EMG_R_LEG_1
+let right_leg2_emg=RLEG2,RIGHT_LEG2,R_LEG2,R_LEG_2
+let right_leg2_emg=EEG_RLEG2,EEG_RIGHT_LEG2,EEG_R_LEG2,EEG_R_LEG_2
+let right_leg2_emg=EMG_RLEG2,EMG_RIGHT_LEG2,EMG_R_LEG2,EMG_R_LEG_2
+
+% 2-lead EMG channels (pre-computed bilateral LATs and RATs)
+
+%  assumption: requires that channel labels make referencing explicit
+
+let left_leg_emg=LLeg1_LLeg2,lleg1_2
+let left_leg_emg=EMG_LLEG_LLEG2,EMG_LLEG__LLEG_,EMG_LAT1_LAT2,LAT1_LAT2
+