Cormier Hannah, Tsang Christine D, Van Hedger Stephen C
Department of Psychology, Huron University College at Western: London, 1349 Western Road, London, ON, N6G 1H3, Canada.
Department of Psychology, Western University: London, London, ON, Canada.
Atten Percept Psychophys. 2025 Feb;87(2):480-497. doi: 10.3758/s13414-024-02985-5. Epub 2025 Jan 15.
Previous studies have reported visual motion aftereffects (MAEs) following prolonged exposure to auditory stimuli depicting motion, such as ascending or descending musical scales. The role of attention in modulating these cross-modal MAEs, however, remains unclear. The present study manipulated the level of attention directed to musical scales depicting motion and assessed subsequent changes in MAE strength. In Experiment 1, participants either responded to an occasional secondary auditory stimulus presented concurrently with the musical scales (diverted-attention condition) or focused on the scales (control condition). In Experiment 2 we increased the attentional load of the task by having participants perform an auditory 1-back task in one ear, while the musical scales were played in the other. Visual motion perception in both experiments was assessed via random dot kinematograms (RDKs) varying in motion coherence. Results from Experiment 1 replicated prior work, in that extended listening to ascending scales resulted in a greater likelihood of judging RDK motion as descending, in line with the MAE. In contrast, the MAE was eliminated in Experiment 2. These results were internally replicated using an in-lab, within-participant design (Experiment 3). These results suggest that attention is necessary in eliciting an auditory-induced visual MAE.
先前的研究报告称，在长时间暴露于描绘运动的听觉刺激（如上行或下行音阶）后会出现视觉运动后效（MAE）。然而，注意力在调节这些跨模态MAE中的作用仍不清楚。本研究操纵了对描绘运动的音阶的注意力水平，并评估了MAE强度随后的变化。在实验1中，参与者要么对与音阶同时呈现的偶尔的次要听觉刺激做出反应（注意力分散条件），要么专注于音阶（对照条件）。在实验2中，我们通过让参与者在一只耳朵中执行听觉1-back任务，同时在另一只耳朵中播放音阶，增加了任务的注意力负荷。在两个实验中，视觉运动感知均通过运动连贯性不同的随机点运动图（RDK）进行评估。实验1的结果重复了先前的研究，即长时间聆听上行音阶会增加将RDK运动判断为下行的可能性，这与MAE一致。相比之下，实验2中MAE被消除了。这些结果在实验室内、参与者内设计（实验3）中得到了内部重复。这些结果表明，注意力是引发听觉诱发视觉MAE所必需的。
