Université du Québec à Montréal Montréal, QC, Canada.
Front Hum Neurosci. 2014 Jan 27;8:14. doi: 10.3389/fnhum.2014.00014. eCollection 2014.
Functional magnetic resonance imaging was used to identify the brain-based mechanisms of uncertainty and certainty associated with answers to multiple-choice questions involving common misconceptions about electric circuits. Twenty-two scientifically novice participants (humanities and arts college students) were asked, in an fMRI study, whether or not they thought the light bulbs in images presenting electric circuits were lighted up correctly, and if they were certain or uncertain of their answers. When participants reported that they were unsure of their responses, analyses revealed significant activations in brain areas typically involved in uncertainty (anterior cingulate cortex, anterior insula cortex, and superior/dorsomedial frontal cortex) and in the left middle/superior temporal lobe. Certainty was associated with large bilateral activations in the occipital and parietal regions usually involved in visuospatial processing. Correct-and-certain answers were associated with activations that suggest a stronger mobilization of visual attention resources when compared to incorrect-and-certain answers. These findings provide insights into brain-based mechanisms of uncertainty that are activated when common misconceptions, identified as such by science education research literature, interfere in decision making in a school-like task. We also discuss the implications of these results from an educational perspective.
功能性磁共振成像被用于识别与涉及电路常见误解的多项选择题答案相关的不确定性和确定性的大脑机制。在一项 fMRI 研究中,22 名科学新手参与者(人文艺术学院的学生)被要求回答图像中表示电路的灯泡是否正确点亮,并确定他们的回答是确定还是不确定。当参与者报告他们不确定自己的反应时,分析显示大脑中通常与不确定性相关的区域(前扣带皮层、前岛叶皮层和上/背内侧额皮质)以及左侧中/上颞叶显著激活。确定与通常涉及视觉空间处理的枕叶和顶叶区域的双侧大激活相关。与不确定和确定的正确答案相关的激活表明,与不确定和错误的答案相比,当科学教育研究文献确定的常见误解干扰类似学校的任务中的决策时,视觉注意力资源的调动更强。我们还从教育的角度讨论了这些结果的意义。