Hemispheric asymmetry, early visual processes, and serial memory comparison.
Hemispheric asymmetry, early visual processes, and serial memory comparison.
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DOI：
10.1016/0278-2626(82)90019-7
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发表时间：
1982-04-01
影响因子：
2.5
通讯作者：
Hellige, J B
中科院分区：
文献类型：
--
作者：
O'Boyle, M W;Hellige, J B
观察员指出，是否一个单一的探针字母呈现给左视野/右半球（LVF-RH）或右视野/左半球（RVF-LH）匹配的两个，三个，四个，或五个字母的名称和情况。对于积极的试验在初始的实验会话中，线性记忆集大小反应时间函数的斜率增加感知降级的探测信LVF-RH试验，但不是RVF-LH试验。此外，知觉退化的探针字母增加了截距的记忆集大小功能的RVF-LH试验比LVF-RH试验。在随后的实验中，获得了相同的截距结果模式，但探头的感知退化不再改变LVF-RH或RVF-LH试验的斜率。然而，RVF-LH试验的斜率一致低于LVF-RH试验。主要结果与假设的右半球效率的早期处理阶段和左半球效率的字母数字信息的串行处理是一致的。这些结果进一步说明了在大脑侧化研究中分离加工阶段的重要性，并表明各个阶段的相对难度可以是侧化结果的决定因素。
Observers indicated whether a single probe letter presented to the left visual field/right hemisphere (LVF-RH) or to the right visual field/left hemisphere (RVF-LH) matched one of two, three, four, or five set letters in both name and case. For positive trials during the initial experimental session, the slope of the linear memory set size reaction time function was increased by perceptually degrading the probe letter on LVF-RH trials, but not on RVF-LH trials. In addition, perceptual degradation of the probe letter increased the intercept of the memory set size function more on RVF-LH trials than on LVF-RH trials. During subsequent experimental sessions, the same pattern of intercept results was obtained but perceptual degradation of the probe no longer changed the slope for either LVF-RH or RVF-LH trials. However, the slopes were uniformly lower on RVF-LH trials than on LVF-RH trials. The major results are consistent with hypothesized right-hemisphere efficiency for early processing stages and left-hemisphere efficiency for serial processing of alphanumeric information. The results further illustrate the importance of separating stages of processing in studies of cerebral laterality and indicate that the relative difficulty of the various stages can be a determinant of laterality results.