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fMRI脑影像特征提取——静息态与任务态,ALFF/fALFF和ReHo(Dp…
2021年7月3日 · 本文介绍了任务态fMRI与静息态fMRI的区别,任务态侧重于执行任务时的模型驱动分析,如GLM+HRF,而静息态则更注重数据驱动的特征,如功能连接、ReHo和ALFF。 …
ALFF, fALFF, mfALFF, mALFF | The R-fMRI Network
2012年12月15日 · What I found is that there was a freakishly massive difference in both fALFF and ALFF (FDR q.000000000000 etc.). ALFF was in the same direction as the mfALFF …
脑影像知识科普 | 什么是ALFF
2023年3月7日 · ALFF的全称为the Amplitude of Low Frequency Fluctuations, 汉语译为低频振幅。 之所以是低频,是因为Biswal的研究证明,运动皮层之间自发的低频(<0 xss=removed>)具 …
Human Brain Mapping | Neuroimaging Journal - Wiley Online Library
Amplitude of low-frequency fluctuation (ALFF) has been widely used for localization of abnormal activity at the single-voxel level in resting-state fMRI (RS-fMRI) studies. However, previous …
Frontal lobe fALFF measured from resting-state fMRI as a ... - Nature
2022年10月5日 · Voxelwise fALFF derived from baseline resting-state fMRI scans served as the primary measure of interest, providing a hypothesis-free (as opposed to region-of-interest) …
ALFF/fALFF — BRANT 3.36 documentation - Read the Docs
ALFF is calculated as the amplitude of the time series in a certain frequency band, which is the averaged square root of the power spectral density of the filtered time series. To increase the …
基于功能磁共振成像技术的全脑ALFF与fALFF值的检验 - 豆丁网
2012年1月13日 · ALFF是臧玉峰教授等人基于前人研究的基础上,通过计算低频段(0.01HZ-0.08HZ)下BOLD信号的功率谱的均方根,利用低频信号的能量来表示不同脑区神经元的活动 …
Fractional amplitude of low-frequency fluctuations (fALFF) in post ...
We found significantly higher fALFF in the depressed compared to non-depressed participants in the left dorsolateral prefrontal cortex (DLPFC) and the right precentral gyrus, and a significant …
FALF ConvNets: Fatuous auxiliary loss based filter-pruning for ...
2020年1月1日 · Our model compression method reduces the number of FLOPS by an impressive factor of 6.03X and GPU memory footprint by more than 17X for VGG-16, significantly …