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首页> 外文期刊>The European Journal of Neuroscience >Absence of direction-specific cross-modal visual-auditory adaptation in motion-onset event-related potentials
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Absence of direction-specific cross-modal visual-auditory adaptation in motion-onset event-related potentials

机译：运动发作事件相关电位中没有特定方向的交叉模态视觉听觉适应

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摘要

Adaptation to visual or auditory motion affects within-modality motion processing as reflected by visual or auditory free-field motion-onset evoked potentials (VEPs, AEPs). Here, a visual-auditory motion adaptation paradigm was used to investigate the effect of visual motion adaptation on VEPs and AEPs to leftward motion-onset test stimuli. Effects of visual adaptation to (i) scattered light flashes, and motion in the (ii) same or in the (iii) opposite direction of the test stimulus were compared. For the motion-onset VEPs, i.e. the intra-modal adaptation conditions, direction-specific adaptation was observed - the change-N2 (cN2) and change-P2 (cP2) amplitudes were significantly smaller after motion adaptation in the same than in the opposite direction. For the motion-onset AEPs, i.e. the cross-modal adaptation condition, there was an effect of motion history only in the change-P1 (cP1), and this effect was not direction-specific - cP1 was smaller after scatter than after motion adaptation to either direction. No effects were found for later components of motion-onset AEPs. While the VEP results provided clear evidence for the existence of a direction-specific effect of motion adaptation within the visual modality, the AEP findings suggested merely a motion-related, but not a direction-specific effect. In conclusion, the adaptation of veridical auditory motion detectors by visual motion is not reflected by the AEPs of the present study.
机译：对视觉或听觉运动的适应会影响模态内的运动处理，如视觉或听觉自由场运动发作诱发电位（VEP，AEP）所反映。在这里，视觉听觉运动适应范式被用来研究视觉运动适应对左向运动发作测试刺激对VEP和AEP的影响。比较了视觉适应（i）散射光闪烁以及在测试刺激的（ii）相同或（iii）相反方向上运动的效果。对于运动发作的VEP，即模态内适应条件，观察到了方向特定的适应-运动适应后，变化N2（cN2）和变化P2（cP2）幅度明显小于相反方向方向。对于运动开始的AEP，即交叉模式适应条件，仅在change-P1（cP1）中存在运动历史的影响，并且该影响不是特定于方向的-散布后cP1小于运动适应后的cP1向任一方向。未发现运动发作性AEP的后续成分有影响。虽然VEP结果提供了视觉模态内运动适应的特定于方向的效果的明确证据，但AEP的发现仅表明与运动相关，而没有特定于方向的效果。总之，本研究的AEP并未反映视觉运动对垂直听觉运动检测器的适应性。

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