Table 4.

Summary of effects of repeated phencyclidine and chronic metabotropic glutamate receptor 2/3 antagonist on performance in the 5-choice serial reaction time task.

Task measure	Phencyclidine main effect	LY341495 main effect	Phencyclidine × LY341495 interaction	Difference between LY341495 and vehicle groups during phencyclidine exposure (post hoc)
accuracy	⬇	↔	no	not significant
% correct responses	⬇	↔	no	not significant
% incorrect responses	⬆	↔	no	not significant
% omissions	⬆	↔	no	not significant
premature responses	⬆	↔	no	not significant
timeout responses	⬆	↔	yes	P < 0.05
latency to correct response	↔	↔	no	not significant
latency to reward retrieval	↔	↔	no	not significant
total trials	⬇	↔	no	not significant

The experimental groups did not differ significantly on any measure before minipump implantation and phencyclidine administration.

⬇: significant decrease; ⬆: significant increase; ↔: no change.