Full Name	Abbreviation
Conductive hydrogel	CHs
Human–machine interfaces	HMI
Ionic liquids	ILs
Electroencephalogram	EEG
Electrocardiogram	ECG
Electromyogram	EMG
Polypyrrole	PPy
Polyaniline	PANI
Poly(3,4-ethylenedioxythiophene): polystyrene sulfonate	PEDOT: PSS
Bentonite	BT
Polyvinyl alcohol	PVA
1-butyl-3-methylimidazolium tetrafluoroborate	BMIMBF4
Polyacrylic acid	PAA
Phase-separated dual ionic channels	PSDIC
Scanning electron microscopy	SEM
Conductive polymer hydrogels	CPHs
Cellulose nanofibrils	PPy@CNF
Tannic acid	TA
Graphene oxide	GO
Functionalized carbon nanotubes	fCNTs
Polyethylene glycol diacrylate	PEGDA
SF/GO/PEGDA	SGP
Graphene composite hydrogel	GTH
Electromagnetic interference	EMI
PVA-AgNWs-LM	PAL
Acrylamide	AAm
N-acryloyl-11-aminoundecanoic acid	A-11
Poly(N-isopropylacrylamide)	PNIPAM
Silk fibroin-functionalized MXene	MXene-SF
Polyacrylamide	PAM
Brain–computer interface	BCI
Elastic conductive composite	ECC
Polyvinylpyrrolidone	PVP
Polydopamine nanoparticles	PDA NPs
Liquid metal@silk fibroin peptide	LM@SF
Sodium caseinate	SC
Obstructive sleep apnea syndrome	OSAS