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. Author manuscript; available in PMC: 2010 Jun 24.
Published in final edited form as: Neurobiol Learn Mem. 2009 Feb 26;92(1):27–34. doi: 10.1016/j.nlm.2009.02.008

Fig. 1.

Fig. 1

Psychometric functions of nose poke rates over 10 different train durations (100–1000 ms in 100 ms increments). Each train duration was given for 30 s in randomized order. A Weibull function was fitted to the nose poke responses. (A) Example of a psychometric function from a single subject. (B) Average psychometric function from the last session of all experimental subjects prior to training.