Brodbeck D R, Hampton R R, Cheng K
Department of Psychology, University of Toronto, Toronto, M5S 1A1, Canada.
Behav Processes. 1998 Dec;44(2):183-95. doi: 10.1016/s0376-6357(98)00048-5.
In Experiment 1 the behaviour of black-capped chickadees timing intervals of 12.5 or 37.5 s was studied using the peak procedure. Average rate of responding peaked near the trained FI on test trials, while the spread of the response distribution was larger for the longer FI. On individual trials, chickadees showed a break-run-break pattern of abrupt changes in rate of responding. These results, plus the pattern of means, standard deviations, and correlations found in start times, stop times, and durations of runs, were similar to those found in pigeons and rats. This suggests that birds and rodents use similar timing mechanisms. In Experiment 2, chickadees were tested with an interrupted FI signal. On such 'gap' trials, the chickadees, like pigeons but unlike rats tested under similar parameters, ignored the signal time elapsed prior to the FI interruption and reset the interval clock.
在实验1中，使用峰值程序研究了黑头山雀对12.5秒或37.5秒时间间隔的计时行为。在测试试验中，平均反应率在接近训练的固定间隔时间处达到峰值，而对于较长的固定间隔时间，反应分布的离散程度更大。在个别试验中，山雀表现出反应率突然变化的中断-运行-中断模式。这些结果，加上在开始时间、停止时间和运行持续时间中发现的均值、标准差和相关性模式，与在鸽子和大鼠中发现的结果相似。这表明鸟类和啮齿动物使用相似的计时机制。在实验2中，对山雀进行了带有中断固定间隔信号的测试。在这种“间隙”试验中，山雀与鸽子一样，但与在类似参数下测试的大鼠不同，忽略了固定间隔中断之前经过的信号时间，并重置了间隔时钟。
