Sentence examples for vi extinction from inspiring English sources
Finally, we determined (vi) extinction frequencies of the different types of protocols.
Before testing, rats were given two additional instrumental training sessions to re-establish instrumental lever pressing (VI-30 sec schedule), followed by two instrumental extinction days (days 34 and 35) with levers present but no sucrose to habituate animals to the extinction condition.
Extinction sessions began the day after the final VI training session.
It is unlikely that the particular order in which VI schedules were presented in the last maintenance session influenced extinction performance, because such order was randomized in every multiple-VI session.
Therefore, it is likely that, after operant conditioning on VI schedules, the absence of decay in bout length in SHR during extinction is indicative of a slower updating of the response-reinforcer association.
Prior to extinction testing, all subjects were trained for 54 days on a multiple variable interval (VI) schedule of food reinforcement, operative on a single lever, with schedules ranging between VI 12-s to VI 192-s.
Extinction sessions were 65-min long (excluding the preceding 5-min acclimation period), and were identical to VI maintenance sessions in all respects except that only the tone signaling the VI 192-s schedule was sounded and lever pressing had no programmed consequences.
