Cerebral activation and lateralization due to the cognition of a various driving speed difference: an fMRI study.
Cerebral activation and lateralization due to the cognition of a various driving speed difference: an fMRI study.
复制标题
由于对各种驾驶速度差异的认知而导致的大脑激活和偏侧化：一项功能磁共振成像研究。
DOI：
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发表时间：
2014
影响因子：
1
通讯作者：
B. Lee
中科院分区：
文献类型：
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作者：
Hyung;Mi;Hee;Hyun;Ul;Sung;Dae;Soon;B. Lee
本研究采用功能性磁共振成像技术，研究了驾驶员对三种驾驶速度的认知与参考驾驶速度相比，大脑激活和偏侧化的变化。在真实的驾驶环境中，以四种不同的驾驶速度记录驾驶视频作为视觉刺激源。实验由三个区块组成，每个区块包括一分钟的控制阶段和一分钟的刺激阶段。通过从低速数据中减去高速数据来分析激活区域和偏侧化指数。驾驶员对不同车速差异的认知激活了与视觉认知、高阶视觉和空间注意（或警觉）相关的枕叶、顶叶和额叶等脑区。随着驾驶速度差异的增大，额叶等与空间注意（或警觉）有关的区域的激活面积增大，而枕叶和顶叶的神经元激活变化不一致。随着驾驶速度差的增大，大脑偏侧化的绝对值减小。这些结果为阐明基于真实视觉刺激的驾驶速度差异认知的脑功能机制提供了基础数据。
This study investigated the changes of cerebral activation and lateralization due to the cognition of three driving speeds in comparison to a reference driving speed using functional magnetic resonance imaging fMRI. A driving video as a visual stimulation source was recorded with four different driving speeds in a real driving situation. The experiment consisted of three blocks and each block included a one-minute control phase and a one-minute stimulation phase. The activation area and the lateralization index were analyzed by subtracting high speed data from low speed data. Such areas as occipital, parietal and frontal lobes, which is related to visual cognition, high order visual and spatial attention (or vigilance), were activated due to the cognition of various driving speed differences. As the driving speed difference increased, the activation area increased in the areas related to spatial attention (or vigilance), such as the frontal lobe, however, changes of neuronal activation in the occipital and parietal lobes were inconsistent. As the driving speed difference increased, the absolute value of cerebral lateralization decreased. These results may provide some basic data for elucidating the brain-function mechanism related to the cognition of a various driving speed difference based on a realistic visual stimulation.