It would be useful for the authors to also include lever press data for the sucrose self administration task, in case there is a strain difference in responding on the active lever during the 20s timeout periods between trials.
Additionally, this condition provides information about whether there is an observed difference in responding in comparison to what was predicted by the baseline condition.
A Kruskal Wallis test revealed no significant difference in responding between the ArchT or eNpHR3.0 animals, and thus, the data from these groups were pooled for analysis (Friedman statistic = 18.17, P < 0.001, n = 12).
The difference in responding between the S+/CS+ and S−/CS− conditions was confirmed by a significant main effect of "stimulus condition" [F 2,23) = 44.66 p <.001].
The neutral stories elicited no difference in responding between the engagement compared to the distraction condition (t 33) = −1.31, p = 0.199).
Following thirty days of abstinence, no difference in responding between groups was found when animals were reintroduced to the self-administration environment alone, indicating habitual behavior.
Reinstatement of instrumental responding was determined by calculating the difference in responding during the reinstatement session and responding during the final day of extinction, and analyzed using paired Student's t-tests.
We also assess the difference in responding to medical treatment and the need for maintenance therapy between patients in whom helicobacter pylori (HP) has been eradicated for other indications and those who are still HP positive.
We used bivariate (chi square, Wilcoxon rank-sum) analysis to assess differences in responding and non-responding physicians' number of years in practice and census region.
