Selective influences of cross-modal spatial-cues on preattentive auditory processing: A whole-head magnetoencephalography study
Selective influences of cross-modal spatial-cues on preattentive auditory processing: A whole-head magnetoencephalography study
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DOI：
10.1016/j.neuroimage.2005.06.030
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发表时间：
2005-11-15
期刊：
影响因子：
5.7
通讯作者：
Ackermann, H
中科院分区：
文献类型：
--
作者：
Mathiak, K;Hertrich, I;Ackermann, H
已知各种感觉模态的处理流在中枢神经系统内相互作用。这些相互作用取决于刺激表征和注意力的水平。本研究主要探讨在无人注意听觉加工过程中，跨感觉对刺激变化检测的影响。我们采用了一个古怪的范例，以评估皮质处理使用全头脑磁图（MEG）在20名志愿者。虽然受试者进行不同难度的分心任务，听觉持续时间偏差随机应用于左耳或右耳之前（200-400毫秒）的眼，静态视觉，或流场共刺激在任何一方。记录了两个半球的不匹配场。注视方向和静态视觉刺激的变化引起了最可靠的增强异常检测在同一侧（最突出的是在右侧听觉皮层）。在这两种情况下，偏侧的无人看管和不可预测的前线索的作用类似于选择性注意的转移，但不减少注意负荷。因此，声音的早期认知表征似乎反映了自动跨通道干扰。前注意的多感觉整合可能为空间物体的定向反应提供神经基础，从而为选择性注意的自愿控制提供神经基础。(c)2005年爱思唯尔公司All rights reserved.
The processing streams of the various sensory modalities are known to interact within the central nervous system. These interactions differ depending on the level of stimulus representation and attention. The current study focused on cross-sensory influences on stimulus change detection during unattended auditory processing. We employed an oddball paradigm to assess cortical processing using whole-head magnetoencephalography (MEG) in 20 volunteers. While subjects performed distraction tasks of varying difficulties, auditory duration deviants were applied randomly to the left or the right ear preceded (200-400 ms) by oculomotor, static visual, or flow field co-stimulation at either side. Mismatch fields were recorded over both hemispheres. Changes in gaze direction and static visual stimuli elicited the most reliable enhancement of deviance detection at the same side (most prominent at the right auditory cortex). Under both conditions, the lateralized unattended and unpredictive pre-cues acted analogously to shifts in selective attention, but were not reduced by attentional load. Thus, the early cognitive representation of sounds seems to reflect automatic cross-modal interference. Preattentive multisensory integration may provide the neuronal basis for orienting reactions to objects in space and thus for voluntary control of selective attention. (c) 2005 Elsevier Inc. All rights reserved.