山东大学学报(工学版)
山東大學學報(工學版)
산동대학학보(공학판)
JOURNAL OF SHANDONG UNIVERSITY(ENGINEERING SCIENCE)
2014年
1期
24-28,40
,共6页
包书哲%朱月澴%王春立
包書哲%硃月澴%王春立
포서철%주월환%왕춘립
磁共振成像%感兴趣区域%血流信号变化比例%颜色特征%形状特征%纹理特征
磁共振成像%感興趣區域%血流信號變化比例%顏色特徵%形狀特徵%紋理特徵
자공진성상%감흥취구역%혈류신호변화비례%안색특정%형상특정%문리특정
fMRI ( functional magnetic resonance imaging )%ROI ( regions of interest )%percentage of bold signal change%color feature%shape feature%texture feature
利用fMRI技术对人脑认知机制进行研究,分析人脑在进行图像认知时所关注的图像特征。首先通过1个功能磁共振成像实验为每个被试定位了脑内的形状、纹理和颜色的感知区域,将这些区域作为研究中的感兴趣区域。然后通过另1个功能磁共振成像实验计算了被试在观看人脸、公共汽车、恐龙及山脉冰川图像刺激时感兴趣区域内的平均信号变化的比例。通过进行数据分析,确定了被试在观看不同类别的图像时,对图像底层特征的关注是不相同的。
利用fMRI技術對人腦認知機製進行研究,分析人腦在進行圖像認知時所關註的圖像特徵。首先通過1箇功能磁共振成像實驗為每箇被試定位瞭腦內的形狀、紋理和顏色的感知區域,將這些區域作為研究中的感興趣區域。然後通過另1箇功能磁共振成像實驗計算瞭被試在觀看人臉、公共汽車、恐龍及山脈冰川圖像刺激時感興趣區域內的平均信號變化的比例。通過進行數據分析,確定瞭被試在觀看不同類彆的圖像時,對圖像底層特徵的關註是不相同的。
이용fMRI기술대인뇌인지궤제진행연구,분석인뇌재진행도상인지시소관주적도상특정。수선통과1개공능자공진성상실험위매개피시정위료뇌내적형상、문리화안색적감지구역,장저사구역작위연구중적감흥취구역。연후통과령1개공능자공진성상실험계산료피시재관간인검、공공기차、공룡급산맥빙천도상자격시감흥취구역내적평균신호변화적비례。통과진행수거분석,학정료피시재관간불동유별적도상시,대도상저층특정적관주시불상동적。
The cognitive mechanisms of human brain based on fMRI were studied to get the image features that the sub-jects paied attention to when they saw the images.The shape, texture and color perception regions were located in the brain for every subject through one fMRI experiment, and these regions were defined as interest regions.The mean per-cent bold signal changed in interest regions was calculated when the subjects were watching face, bus, dinosaur and mountain images through another fMRI experiment.The image features that the subjects pay attention to were different when they saw different images.