Ryan Horsfall, Neil Harrison, Georg Meyer, Sophie Wuerger
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引用次数: 0
摘要
在判断视听信号是否来自同一事件时,一个重要的启发式方法就是各信号的时间重合性。以往的研究强调了一个过程,即同时性感知会迅速重新校准,以考虑刺激物物理时间偏移的差异。本文研究了快速重新校准是否也会因中心到达潜伏期的不同而发生,而中心到达潜伏期是由视觉强度相关的处理时间驱动的。在一项行为实验中,观察者完成了时序判断(TOJ)、同时性判断(SJ)和简单反应时间(RT)任务,并对前面带有明亮或昏暗视觉刺激的其他视听试验做出了反应。结果发现,在 TOJ 任务中,主观同时性点会因前面刺激的视觉强度而移动,但在 SJ 任务中不会,而在 RT 数据中,前面刺激的强度没有影响。因此,我们的数据提供了一些证据,证明同时性感知会根据刺激强度迅速重新校准。
Perceived Audio-Visual Simultaneity Is Recalibrated by the Visual Intensity of the Preceding Trial.
A vital heuristic used when making judgements on whether audio-visual signals arise from the same event, is the temporal coincidence of the respective signals. Previous research has highlighted a process, whereby the perception of simultaneity rapidly recalibrates to account for differences in the physical temporal offsets of stimuli. The current paper investigated whether rapid recalibration also occurs in response to differences in central arrival latencies, driven by visual-intensity-dependent processing times. In a behavioural experiment, observers completed a temporal-order judgement (TOJ), simultaneity judgement (SJ) and simple reaction-time (RT) task and responded to audio-visual trials that were preceded by other audio-visual trials with either a bright or dim visual stimulus. It was found that the point of subjective simultaneity shifted, due to the visual intensity of the preceding stimulus, in the TOJ, but not SJ task, while the RT data revealed no effect of preceding intensity. Our data therefore provide some evidence that the perception of simultaneity rapidly recalibrates based on stimulus intensity.
期刊介绍:
Multisensory Research is an interdisciplinary archival journal covering all aspects of multisensory processing including the control of action, cognition and attention. Research using any approach to increase our understanding of multisensory perceptual, behavioural, neural and computational mechanisms is encouraged. Empirical, neurophysiological, psychophysical, brain imaging, clinical, developmental, mathematical and computational analyses are welcome. Research will also be considered covering multisensory applications such as sensory substitution, crossmodal methods for delivering sensory information or multisensory approaches to robotics and engineering. Short communications and technical notes that draw attention to new developments will be included, as will reviews and commentaries on current issues. Special issues dealing with specific topics will be announced from time to time. Multisensory Research is a continuation of Seeing and Perceiving, and of Spatial Vision.