Right hemisphere dominance in visual statistical learning.

Right hemisphere dominance in visual statistical learning.
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DOI:
10.1162/jocn.2010.21508
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发表时间:
2011-05
影响因子:
3.2
通讯作者:
Gazzaniga MS
Gazzaniga MS
中科院分区:
医学3区
文献类型:
--
作者:
Roser ME;Fiser J;Aslin RN;Gazzaniga MS

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几项研究报告了右脑(RH)在视觉-空间整合方面的优势和左半球(LH)在从协变模式推断概念知识方面的优势。本研究考察了新的视觉特征组合的内隐学习中的大脑半球不对称性。大脑分裂患者和正常对照组的参与者观看了呈现在右侧或左侧视野中的多种形状的场景。参与者不知道,这些场景是由固定形状对的随机组合组成的。随后的测试发现,当受试者出现在任何一个视野中时,控制组参与者都能区分固定配对的形状和随机组合的形状。除练习和测试显示同时出现在左侧视野(RH)外,脑裂患者的操作是偶然的。这些结果表明,新视觉特征的统计学习是由右脑的视觉空间加工主导的,并为fMRI激活模式在无监督统计学习过程中如何变化提供了预测。
Several studies report a right hemisphere (RH) advantage for visuo-spatial integration and a left hemisphere (LH) advantage for inferring conceptual knowledge from patterns of covariation. The present study examined hemispheric asymmetry in the implicit learning of new visual-feature combinations. A split-brain patient and normal control participants viewed multi-shape scenes presented in either the right or left visual fields. Unbeknownst to the participants the scenes were composed from a random combination of fixed pairs of shapes. Subsequent testing found that control participants could discriminate fixed-pair shapes from randomly combined shapes when presented in either visual field. The split-brain patient performed at chance except when both the practice and test displays were presented in the left visual field (RH). These results suggest that the statistical learning of new visual features is dominated by visuospatial processing in the right hemisphere and provide a prediction about how fMRI activation patterns might change during unsupervised statistical learning.
DOI: 10.1016/s0278-2626(03)00103-9
发表时间: 2003-11-01
影响因子: 2.5
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