ALS	amyotrophic lateral sclerosis
BCI	brain–computer interface
c-VEP	code-modulated visual evoked potential
EA	number of extra actions
EEG	electro-encephalography
EOG	electro-oculography
ETI	eye-tracker interface
FSM	finite state machine
HCI	human–computer interaction
HR	hit rate
ID	index of difficulty
IP	index of performance
IR	infrared
ITR	information transfer rate
KW	Kruskal–Wallis test
LIS	locked-in syndrome
LSL	labstreaming layer
ME	movement error
MI	motor imagery
MO	movement offset
MT	movement time
MV	movement variability
NED	normalized effective distance
NM	NeuroSky Mindwave
SAM	self-assessment manikin
SSVEP	steady state visual potential
T	throughput