Each female rat has a preferred pacing interval, and females develop conditioned place preferences for paced sex versus nonpaced sex.
While layer II/III neurons did not fire randomly, but had a preferred interspike interval of ∼60 ms, equivalent to a concentration of individual and population firing at 16.7 Hz (Fig. 4b,c), layer V/VI neurons lack this coordinated firing (Fig. 4e,f).
Isotherms are drawn normally as solid lines at a preferred temperature interval.
This suggests that sexual behavior is reinforcing to female rats when their preferred interval is achieved, whether or not they are actively controlling the rate of copulation.
The findings indicate that female rats develop conditioned place preferences for paced sex and for sex in which the male is removed at her preferred interval.
Furthermore, females who have males removed at their preferred intervals during a copulatory bout show extracellular dopamine concentrations comparable to females engaging in paced sex.
A perpetuity is a constant cash flow at regular intervals forever, for example, a preferred stock that pays $1000 a year for forever.
The binding curve was generated by fitting the data simultaneously to one-site and two-site competitive binding models, and the F test provided a preferred model for the mean IC50 values (confidence interval 95%).
These intervals defined the accessible area (A) in which the simulated bird used a preferred mesh (P).
The method is recommended as a preferred method for indirect comparison, 8 superior to informal methods such as comparison of confidence intervals.
Everyone has a preferred line.
