Within-session response rate analysis in FR5-UC and PR4. a Changes in response rate in the first session of FR5-UC. b Peak response rate in FR5-UC. c Decay rate in FR5-UC. d Changes in response rate in the first session of PR4. e Peak response rate in PR4. f Decay rate in PR4. WT group n = 10 and mGluR5 KO group n = 10, unpaired t test; ***p < 0.001. All data are presented as means ± s.e.m.