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首页> 外文期刊>The European Journal of Neuroscience >Parallelism in the brain's visual form system
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Parallelism in the brain's visual form system

机译：大脑视觉形式系统中的平行性

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We used magnetoencephalography (MEG) to determine whether increasingly complex forms constituted from the same elements (lines) activate visual cortex with the same or different latencies. Twenty right-handed healthy adult volunteers viewed two different forms, lines and rhomboids, representing two levels of complexity. Our results showed that the earliest responses produced by lines and rhomboids in both striate and prestriate cortex had similar peak latencies (40 ms) although lines produced stronger responses than rhomboids. Dynamic causal modeling (DCM) showed that a parallel multiple input model to striate and prestriate cortex accounts best for the MEG response data. These results lead us to conclude that the perceptual hierarchy between lines and rhomboids is not mirrored by a temporal hierarchy in latency of activation and thus that a strategy of parallel processing appears to be used to construct forms, without implying that a hierarchical strategy may not be used in separate visual areas, in parallel. We used magnetoencephalography (MEG) to determine whether increasingly complex forms constituted from the same elements (lines) activate visual cortex with the same or different latencies. Twenty right-handed healthy adult volunteers viewed two different forms, lines and rhomboids, representing two levels of complexity.
机译：我们使用脑磁图（MEG）来确定由相同元素（线）构成的越来越复杂的形式是否以相同或不同的延迟激活视觉皮层。二十位右撇子健康成人志愿者查看了两种不同的形式，线条和菱形，代表了两个复杂程度。我们的结果表明，纹状体和菱形皮层中线和菱形产生的最早响应具有相似的峰值潜伏期（40毫秒），尽管线比菱形产生更强的响应。动态因果模型（DCM）显示，用于对皮层进行横纹和预条纹的并行多输入模型最能反映MEG响应数据。这些结果使我们得出结论，线和菱形之间的感知层次在激活等待时间中没有被时间层次所反映，因此，并行处理策略似乎用于构造表单，而不意味着层次策略可能不会在单独的视觉区域中并行使用。我们使用脑磁图（MEG）来确定由相同元素（线）构成的越来越复杂的形式是否以相同或不同的延迟激活视觉皮层。二十位右撇子健康成人志愿者查看了两种不同的形式，线条和菱形，代表了两个复杂程度。

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