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Response Duration and Interresponse Time under FR5 and VR5 Schedules and Subsequent Extinction

机译：FR5和VR5时间表及后续灭绝的响应持续时间和响应时间

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With respect to press duration, t, and interresponse time, i rats under FR 5 and VR 5 schedules and subsequent extinction behaved similarly. During acquisition days, mean t and mean i decreased, and mean response rate increased. Compared with acquisition, in extinction (a) the relative fre?quency of short t s decreased, (b) either the relative frequency of short is decreased or the relative frequencies of both short and long is increased. Variations in several central tendency and variability measures of t and i within the first extinction day were greater than variations within the last ac?quisition day. Median duration of the first press or of the first interresponse time following water-dipper operation was relatively long ("post-reinforcement pause"). Thereafter, both median t and median i, as a function of ordinal number following dipper operation, tended to remain relatively constant. With?in an FR5 or VR5 cycle, response rate changed abruptly from zero to a constant rate. During extinction, periods of responding at a normal or slightly sub?normal rate alternated with periods of little or no responding.

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