C	center
CF	cognitive flexibility
CODOP	changeover delay after other-port response
conc RI x s RI y s	concurrent random-interval random interval schedule at with a mean of x seconds inter-reinforcement times at the left choice port and a mean of y seconds at the right
D2	D2-receptor
DA	dopamine
dB SPL	decibel Sound Pressure Level
Eti	eticlopride
GABA	gamma-aminobutyric acid
GABA-A	GABA receptor type A
Hz	Hertz
L	left
mPFC	medial prefrontal cortex
OCD	obsessive-compulsive disorder
PFC	Prefrontal cortex
P(RL), P(RfL)	relative rate of operant L responses and relative rate of reinforcements from L responses, respectively
Qnp	quinpirole
R	right
RI	random interval
RfL, RfR	reinforcement (water delivery at the center port) triggered by nose-poking into the left and right choice port, respectively
RL, RR	responses by nose-poking into the left and right choice port, respectively
Sal	saline