BACKGROUND： Previous studies have analyzed cerebral activation and lateralization of cognitive functions, as well as cerebellar function with reference to high-level cognitive processing. However, there has been very...BACKGROUND： Previous studies have analyzed cerebral activation and lateralization of cognitive functions, as well as cerebellar function with reference to high-level cognitive processing. However, there has been very little research on systematization and diversification. In particular, there are no reports on cerebellar lateralization, although reliable results have been reported on cerebral lateralization. OBJECTIVE： This study analyzed cerebellar activation and lateralization in relation to verbal and visuospatial tasks using functional magnetic resonance imaging （fMRI）. DESIGN, TIME AND SETTING： A block design for fMRI observation was performed at the fMRI Laboratory, Brain Science Research Center, Korea Advanced Institute of Science and Technology from May 2006 to September 2008. PARTICIPANTS： Sixteen healthy, male, college students, aged （23.3 ± 0.5） years, and 16 healthy, male, college students, aged （21.5 ± 2.3） years, participated in the study, respectively. METHODS： Verbal and visuospatial tasks were presented while functional brain images were acquired using a 3T fMRI system. Verbal analogy testing required the subject to select the word with the same relationship as one of the given words. Verbal antonym testing required the subject to select the word with a different meaning among four words. Visuospatial tasks involved selecting a shape that corresponded to a given figure with four examples, as well as selecting a development figure of a diagram. MAIN OUTCOME MEASURES： Changes in cerebellar activation and lateralization between two cognition tasks. RESULTS： Bilateral hemisphere Iobules VI and IX, right hemisphere Iobule VIII, bilateral hemisphere Iobules Crus I, and vermis Iobule IV, V, and Vl were closely related to verbal tasks in comparison to visuospatial tasks. Conversely, bilateral hemisphere Iobules IV and V, as well as the right hemisphere Iobule VI, were closely related to visuospatial tasks compared to verbal tasks. There was no great difference between the number of activated voxels in the cerebellums during the tasks, and cerebellar lateralization was not observed. CONCLUSION： In the cerebellum, the activation region, but not lateralization, was different between verbal and visuospatial tasks.展开更多
It remains unclear whether language tasks in one＇s first （L1） or second （L2） language can cause stress responses and whether frontal, autonomic and behavioral responses to stressful tasks are correlated. In this ...It remains unclear whether language tasks in one＇s first （L1） or second （L2） language can cause stress responses and whether frontal, autonomic and behavioral responses to stressful tasks are correlated. In this study, we studied 22 Chinese subjects whose L2 was English and measured the cerebral blood oxygenation in their frontal lobe by using functional near-infrared spectroscopy （fNIRS） as par- ticipants engaged in a mental arithmetic task （MAT） and verbal fluency tasks （VFTs） in L1 （Chinese） and L2 （English）. To examine the activated cortical areas, we estimated the channel location based on Montreal Neurological Institute （MNI） standard brain space by using a-probabilistic estimation method. We evaluated heart rate （HR） changes to analyze autonomic nervous system （ANS） functioning. We found that the MAT and VFTs induced greater increases in HR than did the control （Ctrl） task. Further- more, subjects developed greater increases in HR in the MAT and VFTt~ than they did in the VFTL1. Compared with the Ctrl task, the MAT and both VFTLland VFTL2 produced robust and widespread bi- lateral activation of the frontal cortex. Interestingly, partial correlation analysis indicated that the activity in the left inferior frontal gyrus （LIFG） [Brodmarm＇s area （BA） 47] was consistently correlated with the increases in HR across the three tasks （MAT, VFTL2, and VFTL1）, after controlling for the performance data. The present results suggested that a VFT in L2 may be more stressful than in L1. The LIFG may affect the activation of the sympathetic system induced by stressful tasks, includin~ MATs and VFTs.展开更多
目的:利用快速识别整合多元化文献证据的概况性评价方法,分析近年来有关精神分裂症言语流畅性任务功能近红外光谱研究。方法:检索PubMed、Web Of Science、中国知网、维普、万方等数据库2014年1月-2021年6月精神分裂症言语流畅性任务的...目的:利用快速识别整合多元化文献证据的概况性评价方法,分析近年来有关精神分裂症言语流畅性任务功能近红外光谱研究。方法:检索PubMed、Web Of Science、中国知网、维普、万方等数据库2014年1月-2021年6月精神分裂症言语流畅性任务的功能近红外光谱研究报告。依据概况性评价指南和清单制作综述。结果:纳入23篇文献。70%研究采用字母流畅性任务,5项研究探索精神分裂症生物学标记物分类方法。前额叶亚区与临床变量相关性结果不一致。结论:言语流畅任务下功能近红外光谱研究显示前额叶功能异常可能是精神分裂症的候选生物学标志物。展开更多
目的基于近红外光谱成像(near-infrared spectroscopy,NIRS)技术,探索精神分裂症患者言语流畅性任务下的脑激活情况是否会随着治疗进程发生改变,分析NIRS是否具有评估患者精神症状改善程度的价值。方法纳入53例精神分裂症患者和55名健...目的基于近红外光谱成像(near-infrared spectroscopy,NIRS)技术,探索精神分裂症患者言语流畅性任务下的脑激活情况是否会随着治疗进程发生改变,分析NIRS是否具有评估患者精神症状改善程度的价值。方法纳入53例精神分裂症患者和55名健康对照。入组时使用NIRS检测所有被试言语流畅性任务期间额颞叶9个感兴趣区域(region of interest,ROI)的氧合血红蛋白(oxygenated hemoglobin,oxy-Hb)变化情况,使用阳性与阴性症状量表(positive and negative symptom scale,PANSS)评估患者症状的严重程度。患者以单一非典型抗精神病药物治疗,4周后对患者再次进行PANSS评定和NIRS检测。结果入组时,与基线值相比,患者组9个ROI均未激活(P>0.05,FDR校正),对照组均激活(P<0.05,FDR校正),患者组ROI的oxy-Hb变化值均低于对照组(P<0.05,FDR校正)。4周后患者组PANSS总分、各分量表评分均较入组时下降(P<0.05),有6个ROI激活(P<0.05,FDR校正),其中左腹外侧前额叶及左侧颞上皮质的oxy-Hb变化值较入组时提高(P<0.05,FDR校正)。未发现PANSS评分与oxy-Hb变化值间存在统计学相关性(P>0.05,FDR校正)。结论治疗4周后精神分裂症患者额颞叶激活情况有所改善,但NIRS尚不能用于患者精神症状改善情况的客观评估,需要更加深入的研究。展开更多
文摘BACKGROUND： Previous studies have analyzed cerebral activation and lateralization of cognitive functions, as well as cerebellar function with reference to high-level cognitive processing. However, there has been very little research on systematization and diversification. In particular, there are no reports on cerebellar lateralization, although reliable results have been reported on cerebral lateralization. OBJECTIVE： This study analyzed cerebellar activation and lateralization in relation to verbal and visuospatial tasks using functional magnetic resonance imaging （fMRI）. DESIGN, TIME AND SETTING： A block design for fMRI observation was performed at the fMRI Laboratory, Brain Science Research Center, Korea Advanced Institute of Science and Technology from May 2006 to September 2008. PARTICIPANTS： Sixteen healthy, male, college students, aged （23.3 ± 0.5） years, and 16 healthy, male, college students, aged （21.5 ± 2.3） years, participated in the study, respectively. METHODS： Verbal and visuospatial tasks were presented while functional brain images were acquired using a 3T fMRI system. Verbal analogy testing required the subject to select the word with the same relationship as one of the given words. Verbal antonym testing required the subject to select the word with a different meaning among four words. Visuospatial tasks involved selecting a shape that corresponded to a given figure with four examples, as well as selecting a development figure of a diagram. MAIN OUTCOME MEASURES： Changes in cerebellar activation and lateralization between two cognition tasks. RESULTS： Bilateral hemisphere Iobules VI and IX, right hemisphere Iobule VIII, bilateral hemisphere Iobules Crus I, and vermis Iobule IV, V, and Vl were closely related to verbal tasks in comparison to visuospatial tasks. Conversely, bilateral hemisphere Iobules IV and V, as well as the right hemisphere Iobule VI, were closely related to visuospatial tasks compared to verbal tasks. There was no great difference between the number of activated voxels in the cerebellums during the tasks, and cerebellar lateralization was not observed. CONCLUSION： In the cerebellum, the activation region, but not lateralization, was different between verbal and visuospatial tasks.
基金supported by the National High Technology Research and Development Program of China("863"Program,No.2012AA020905)the National Natural Science Foundation of China(No.81171143)+1 种基金the Project of International Cooperation and Exchanges of the National Natural Science Foundation of China(No.81161160570)the Zhou Dafu Medical Research Fund(No.202836019-03)
文摘It remains unclear whether language tasks in one＇s first （L1） or second （L2） language can cause stress responses and whether frontal, autonomic and behavioral responses to stressful tasks are correlated. In this study, we studied 22 Chinese subjects whose L2 was English and measured the cerebral blood oxygenation in their frontal lobe by using functional near-infrared spectroscopy （fNIRS） as par- ticipants engaged in a mental arithmetic task （MAT） and verbal fluency tasks （VFTs） in L1 （Chinese） and L2 （English）. To examine the activated cortical areas, we estimated the channel location based on Montreal Neurological Institute （MNI） standard brain space by using a-probabilistic estimation method. We evaluated heart rate （HR） changes to analyze autonomic nervous system （ANS） functioning. We found that the MAT and VFTs induced greater increases in HR than did the control （Ctrl） task. Further- more, subjects developed greater increases in HR in the MAT and VFTt~ than they did in the VFTL1. Compared with the Ctrl task, the MAT and both VFTLland VFTL2 produced robust and widespread bi- lateral activation of the frontal cortex. Interestingly, partial correlation analysis indicated that the activity in the left inferior frontal gyrus （LIFG） [Brodmarm＇s area （BA） 47] was consistently correlated with the increases in HR across the three tasks （MAT, VFTL2, and VFTL1）, after controlling for the performance data. The present results suggested that a VFT in L2 may be more stressful than in L1. The LIFG may affect the activation of the sympathetic system induced by stressful tasks, includin~ MATs and VFTs.
文摘目的:利用快速识别整合多元化文献证据的概况性评价方法,分析近年来有关精神分裂症言语流畅性任务功能近红外光谱研究。方法:检索PubMed、Web Of Science、中国知网、维普、万方等数据库2014年1月-2021年6月精神分裂症言语流畅性任务的功能近红外光谱研究报告。依据概况性评价指南和清单制作综述。结果:纳入23篇文献。70%研究采用字母流畅性任务,5项研究探索精神分裂症生物学标记物分类方法。前额叶亚区与临床变量相关性结果不一致。结论:言语流畅任务下功能近红外光谱研究显示前额叶功能异常可能是精神分裂症的候选生物学标志物。
文摘目的基于近红外光谱成像(near-infrared spectroscopy,NIRS)技术,探索精神分裂症患者言语流畅性任务下的脑激活情况是否会随着治疗进程发生改变,分析NIRS是否具有评估患者精神症状改善程度的价值。方法纳入53例精神分裂症患者和55名健康对照。入组时使用NIRS检测所有被试言语流畅性任务期间额颞叶9个感兴趣区域(region of interest,ROI)的氧合血红蛋白(oxygenated hemoglobin,oxy-Hb)变化情况,使用阳性与阴性症状量表(positive and negative symptom scale,PANSS)评估患者症状的严重程度。患者以单一非典型抗精神病药物治疗,4周后对患者再次进行PANSS评定和NIRS检测。结果入组时,与基线值相比,患者组9个ROI均未激活(P>0.05,FDR校正),对照组均激活(P<0.05,FDR校正),患者组ROI的oxy-Hb变化值均低于对照组(P<0.05,FDR校正)。4周后患者组PANSS总分、各分量表评分均较入组时下降(P<0.05),有6个ROI激活(P<0.05,FDR校正),其中左腹外侧前额叶及左侧颞上皮质的oxy-Hb变化值较入组时提高(P<0.05,FDR校正)。未发现PANSS评分与oxy-Hb变化值间存在统计学相关性(P>0.05,FDR校正)。结论治疗4周后精神分裂症患者额颞叶激活情况有所改善,但NIRS尚不能用于患者精神症状改善情况的客观评估,需要更加深入的研究。
