Beckmann Joshua S, Young Michael E
Department of Psychology, University of Kentucky, Lexington, KY 40536-0509, USA.
J Exp Psychol Anim Behav Process. 2009 Oct;35(4):525-37. doi: 10.1037/a0015891.
The purpose of the present study was to observe the functional relationship between stimulus dynamics and stimulus duration judgments in humans. Stimulus duration was defined as the length of time that a spinning sphere appeared on a computer screen. Stimulus dynamics were defined by how quickly the sphere rotated on its y-axis. Using a logarithmic scale, a psychophysical bisection task was used to divide stimulus durations into two categories, short and long. Across three experiments, participants' duration judgments were longer the faster the sphere was rotated. This effect was observed over both a long and short temporal scale and over a wide range of stimulus dynamics despite the fact that the reinforcement contingencies penalized participants for this effect. The results are discussed in terms of perceived change as the possible basis of temporal duration estimation. This hypothesis was investigated through applications of the leading quantitative models of temporal discrimination to the present data.
本研究的目的是观察人类中刺激动态与刺激持续时间判断之间的功能关系。刺激持续时间被定义为旋转球体出现在电脑屏幕上的时长。刺激动态由球体绕其y轴旋转的速度定义。使用对数尺度，采用心理物理学二分任务将刺激持续时间分为短和长两类。在三个实验中，球体旋转得越快，参与者对持续时间的判断就越长。尽管强化条件对这种效应会惩罚参与者，但在长和短的时间尺度以及广泛的刺激动态范围内都观察到了这种效应。研究结果从感知变化作为时间持续时间估计的可能基础的角度进行了讨论。通过将主要的时间辨别定量模型应用于当前数据对这一假设进行了研究。
