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首页> 外文期刊>The European Journal of Neuroscience >Visual mismatch negativity for changes in orientation - a sensory memory-dependent response.
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Visual mismatch negativity for changes in orientation - a sensory memory-dependent response.

机译：视觉不匹配阴性导致方向改变-取决于记忆的反应。

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摘要

It remains unclear whether the mismatch negativity of event-related potentials (ERPs) in vision resembles its auditory counterpart in terms of memory relatedness. We recorded ERPs to visual bars in adult humans engaged in an auditory task. In one condition, a bar ('standard') repeated at 400- or 1100-ms non-stimulated intervals was rarely (P = 0.1) replaced by another bar of a different orientation ('deviant'). In the other condition (400-ms intervals), the occurrences of the standards were replaced by 10 (P = 0.1 each) bars of different orientations, including that of the deviant ('control-deviant'). Deviants shifted ERPs towards negative polarity relative to standards in occipital electrodes and towards positive polarity in frontal electrodes at 185-205 ms post-stimulus but only when 400-ms non-stimulated intervals were applied. Furthermore, the shift existed even relative to ERPs to control-deviants. The findings suggest that, as in audition, vision supports the detection of voluntarily unattended changes per se within the constraints of sensory memory. The findings also pave the way for the future exploration of both intact and impaired memory-based visual processing and memory capacity.
机译：尚不清楚在记忆相关性方面，视觉中与事件相关的电位（ERP）的失配阴性是否类似于其听觉对应物。我们将ERPs记录到从事听觉任务的成年人的视力棒中。在一种情况下，以400或1100毫秒的非刺激间隔重复出现的条形（“标准”）很少（P = 0.1）被另一个方向不同（“偏差”）的条形代替。在其他条件下（间隔为400毫秒），标准的出现被10个不同方向的条形图（每个P = 0.1）替换，包括偏差（“控制偏差”）。在刺激后185-205 ms时，偏差会相对于枕电极中的标准将ERPs移向负极，并在额电极中将ERPs移向正极，但仅在应用400 ms非刺激间隔时才发生。此外，甚至相对于ERP，也存在向控制偏差的转变。研究结果表明，像在试听中一样，视觉支持在感觉记忆的限制内检测自愿无人看管的变化。这些发现也为将来探索完整的和受损的基于记忆的视觉处理和记忆能力铺平了道路。

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