Interhemispheric Stroop effects in partial and complete agenesis of the corpus callosum
Interhemispheric Stroop effects in partial and complete agenesis of the corpus callosum
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DOI：
10.1017/s1355617701733048
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发表时间：
2001-03-01
影响因子：
2.6
通讯作者：
Paul, LK
中科院分区：
文献类型：
--
作者：
Brown, WS;Thrasher, ED;Paul, LK
先前的研究表明，胼胝体发育不全个体的大脑半球间Stroop效应减弱，这表明胼胝体在大脑半球间颜色-单词和颜色-斑块相互作用中起重要作用。然而。这一结果仅取决于1名ACC参与者的结果，这些参与者智力正常，其他神经病理学最低。在本文报道的研究中，研究了9名完全或部分ACC和正常智力的个体以及非ACC对照者的胼胝体在半球间Stroop干扰和促进中的作用。一致刺激、不一致刺激和中性刺激分别被单独呈现（色块和颜色词在同一视野内）或双侧呈现（色块和颜色词在不同视野内）。ACC组和非ACC组均发现单侧和双侧（半球间）Stroop干扰，但在程度上没有显著差异，表明胼胝体外通路足以介导这种现象。这表明，前连合更有可能是导致Stroop干扰的语义信息的半球间传递的候选者。
Previous research had demonstrated diminished interhemispheric Stroop effects in individuals with agenesis of the corpus callosum (ACC), suggesting an important role for the callosum in interhemispheric color-word and color-patch interactions. However. this outcome rested on the results of only 1 ACC participant, who had normal intelligence and a minimum of other neuropathology. In the research reported herein, the role of the corpus callosum in interhemispheric Stroop interference and facilitation was investigated in 9 individuals with complete or partial ACC and normal intelligence, and in non-ACC controls. Congruent, incongruent, or neutral stimulus pairs were presented either unilaterally (color-patch and color-word in the same visual field) or bilaterally (color-patch and color-word in different visual fields). Both unilateral and bilateral (interhemispheric) Stroop interference were found for both ACC and non-ACC groups, with no significant difference in magnitude, indicating that extracallosal pathways are sufficient for mediating this phenomenon. It is suggested that the anterior commissure is a more likely candidate for the interhemispheric transmission of the semantic information resulting in Stroop interference.