ABVN	auricular branch of the vagus nerve
ACC	anterior cingulate cortex
ACS	alternating current stimulation
AD	Alzheimer’s disease
AP	area postrema
ASD	autism spectrum disorder
BDNF	brain-derived neurotrophic factor
BF	basal forebrain
CREB	cAMP response element-binding protein
DBS	deep brain stimulation
DCS	direct current stimulation
DLB	dementia with Lewy bodies
DMN	dorsal motor nucleus of the VN
DNMT	DNA methyltransferase
ECT	electroconvulsive therapy
5-caC	5-carboxylcytosine
5-mC	5-methyl cytosine
5-fC	5-formylcytosine
5-hmC	5-hydroxymethylcytosine
GABA	γ-aminobutyric acid
Gadd45	growth arrest and DNA damage 45
GluR1	glutamatergic receptor 1
LC	locus coeruleus
LTP	Long- term potentiation
L-VGCC	L-type voltage-gated calcium channel
MCI	mild cognitive impairment
MeCP2	methyl-CpG-binding protein 2
MWM	Morris water maze
NA	nucleus ambiguus
NCoR	nuclear co-repressor
NEDD8	neural precursor cell-expressed developmentally down-regulated gene 8
NMDAR	N-methyl-D-aspartate receptor
NORT	novel object recognition test
Nrp1	neuropilin-1
NST	nucleus of the solitary tract
NT	neurotrophin
PD	Parkinson’s disease
PFC	prefrontal cortex
PKA	protein kinase A
PPN	pedunculopontine nucleus
PrL	prelimbic cortex
PSD95	postsynaptic protein 95
RN	raphe nuclei
SAMP8	senescence-accelerated mouse prone 8
SNT	spinal nucleus of the trigeminal nerve
TaVNS	transcutaneous auricular vagus nerve stimulation
TBRS	Tatton-Brown Rahman syndrome
Tet	ten-eleven translocation
TMS	transcranial magnetic stimulation