On Functional Brain Asymmetries in Perceptual Priming
On Functional Brain Asymmetries in Perceptual Priming
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关于知觉启动中的功能性大脑不对称性
DOI：
10.1006/brcg.1995.1266
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发表时间：
1995
影响因子：
2.5
通讯作者：
Mika Koivisto
中科院分区：
文献类型：
--
作者：
Mika Koivisto
采用知觉识别启动范式研究了内隐记忆的脑不对称性。在研究阶段，受试者对单词的可读性或可爱性进行评级。在测试阶段，这些词的知觉启动是通过在左侧或右侧视觉半野短暂地呈现刺激来测量的。单词的字体在研究和测试之间是不同的。在研究阶段的定向任务操作并没有影响启动，但它有一个强大的影响外显记忆测试。启动效应是形式特异性的：在相同的字体，因为他们被测试的话进行了研究引发更强烈的比在不同的字体研究的话。没有半球的不对称性，观察到在形式特定的启动，但在一般情况下，启动是更大的右半球/左半球。这些发现表明，在单词识别过程的早期阶段，大脑半球在分析和存储特定形式的信息方面同样有效。有利于左半球的不对称性可能在更高、更抽象的前情感视觉词形处理水平上发展。
Brain asymmetries in implicit memory were studied using a perceptual identification priming paradigm. At the study phase, Subjects rated either the readability or the likeability of words. At the test phase, perceptual priming for these words was measured by presenting stimuli briefly either in the left or in the right visual hemifield. The typeface of the words was varied between the study and test. The orientation task manipulation at the study phase did not influence priming, although it had a powerful effect on a test of explicit memory. Priming effects were form-specific: words which were studied in the same typeface as they were tested were primed more strongly than words which were studied in a different typeface. No hemispheric asymmetries were observed in form-specific priming, but in general, priming was greater in the right hemifield/left hemisphere. These findings suggest that the hemispheres are equally effective in analysing and storing form-specific information at the early stages of word recognition process. Asymmetries favoring the left hemisphere may develop at a higher, more abstract level of presemantic visual word form processing.