CAJ | 학술논문

利用fMRI脑成像技术探讨图形型归纳推理的神经机制。设计了一种由图形形状和条纹方向描述的简单几何图形组成的归纳推理任务,这种图形型任务与以往研究中常用的语句型归纳推理任务是同质的。根据两个图形共享特征数量的不同设计了两种实验任务：共享两个特征（2T）和共享一个特征（1T）,以休息基线（Rest）作为控制任务。2T和1T任务均为归纳推理任务,但2T任务包含知觉特征整合成分,而1T任务不包括。结果发现：与控制任务相比,归纳推理任务在前额区（BA6、9、11、46、47）、尾状核、壳核和丘脑等脑区有显著激活,反映了＂前额皮层-纹状体-丘脑＂通路在图形型归纳推理中的重要作用;图形型归纳推理中的知觉信息整合与右侧额下回（BA47）、双侧尾状核头部、壳核等脑区有关。
이용fMRI뇌성상기술탐토도형형귀납추리적신경궤제。설계료일충유도형형상화조문방향묘술적간단궤하도형조성적귀납추리임무,저충도형형임무여이왕연구중상용적어구형귀납추리임무시동질적。근거량개도형공향특정수량적불동설계료량충실험임무：공향량개특정（2T）화공향일개특정（1T）,이휴식기선（Rest）작위공제임무。2T화1T임무균위귀납추리임무,단2T임무포함지각특정정합성분,이1T임무불포괄。결과발현：여공제임무상비,귀납추리임무재전액구（BA6、9、11、46、47）、미상핵、각핵화구뇌등뇌구유현저격활,반영료＂전액피층-문상체-구뇌＂통로재도형형귀납추리중적중요작용;도형형귀납추리중적지각신식정합여우측액하회（BA47）、쌍측미상핵두부、각핵등뇌구유관。
The neural mechanism of human inductive reasoning is still unclear. Compared with the sentential, numerical task, the figural inductive reasoning task has its advantage. Therefore, a figural inductive reasoning task was designed in an fMRI experiment to examine the neural substrates of human inductive reasoning. The present study is exploratory one and we have no prior hypothesis. The figural inductive reasoning task used was composed of simple geometric figures described by shape and stripe orientation, and was homogeneous to the sentential inductive reasoning tasks used in the previous studies. Two experimental tasks were designed according to the magnitude of shared attributes： sharing two common attributes （2T） and sharing one common attribute （1T）, and rest acted as the control task. Fourteen college students participated in this study. The fMRI results showed： 1） Inductive reasoning as contrast to baseline activated a large number of brain regions including the prefrontal cortex （BA 6, 9, 11, 46, 47）, caudate, putamen, and thalamus, which might reflect the important role of the fronto-striato-thalamus loop in human figural inductive reasoning. 2） Perceptual information integration in figural inductive reasoning was related to the right inferior frontal gyrus （BA 47）, the bilateral head of caudate, putamen. This study explored the neural substrates of human inductive reasoning by using a figural task, which would be helpful to in-depth understand the information-processing mechanism of human inductive reasoning.