5-HT	5-hydroxytryptamine (serotonin)
6-OHDA	6-hydroxydopamine
AAV	Adeno-associated viral vector
AC1/Cg1	Anterior cingulate cortex, subdivision 1
AC2/Cg2	Anterior cingulate cortex, subdivision 2
AMPA	α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid
ATP8A1	ATPase phospholipid transporting 8A1
BDNF	Brain-derived neurotrophic factor
BOLD	Blood-oxygen-level-dependent
CADPS2	Calcium dependent secretion activator 2
Cg	Cingulate cortex
DA	Dopamine/dopaminergic
DLB	Dementia with Lewy bodies
dlPFC	Dorsolateral prefrontal cortex
DMN	Default mode network
E/I	Excitatory/inhibitory
EPSC	Electrically evoked excitatory postsynaptic current
GABA	Gamma-aminobutyric acid
GABARAP	Gamma-aminobutyric acid receptor-associated protein
GAD	Glutamic acid decarboxylase
Glu	Glutamate
GluA1/GluA2	AMPA receptor subunits 1 and 2
GluN1/GluN2A/B	NMDA receptor subunits 1, 2A, and 2B
IL	Infralimbic cortex
L5/6	Layer 5/Layer 6
LC	Locus coeruleus
LBDs	Lewy body dementias
LTP	Long-term potentiation
mEPSC	Miniature excitatory postsynaptic current
mPFC	Medial prefrontal cortex
MPTP	1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine
mTOR	Mammalian target of rapamycin
NA	Noradrenaline
NAC	Non-amyloid-β component
NMDA	N-methyl-D-aspartate
NSF	N-ethylmaleimide-sensitive factor
PD	Parkinson’s disease
PDD	Parkinson’s disease dementia
PD-MCI	Parkinson’s disease-associated mild cognitive impairment
PET	Positron emission tomography
PFF	Pre-formed fibril
PrL	Prelimbic cortex
PSD-95	Postsynaptic density protein 95
PV	Parvalbumin
rab27B	Ras-related protein
RN	Raphe nuclei
rs-fMRI	Resting-state functional magnetic resonance imaging
SN	Substantia nigra
SNc	Substantia nigra pars compacta
SNARE	Soluble N-ethylmaleimide-sensitive factor attachment protein receptor
SNCA	Synuclein alpha gene
SOC	α-Synuclein origin site and connectome
SPN	Striatal spiny projection neuron
SST	Somatostatin
SV	Synaptic vesicle
SV2A/2B	Synaptic vesicle glycoprotein 2A/2B
TrkB	Tropomyosin receptor kinase B
VAMP2	Vesicle-associated membrane protein 2
VGAT	Vesicular GABA transporter
VGLUT1	Vesicular glutamate transporter-1
VGLUT2	Vesicular glutamate transporter-2
vmPFC	Ventromedial prefrontal cortex
VTA	Ventral tegmental area
WT	Wild-Type
α-Syn	α-Synuclein
1H-MRS	Proton magnetic resonance spectroscopy