Heather T. Ma

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Disruption of neural connections among regions regulating mood and cognition rather than cerebrovascular lesions may contribute to post-stroke depression (PSD). In this paper, we hypothesized that structural abnormalities in white matter structure like cingulate cortex induced by focal infarcts would play a role in mood regulation or depression after stroke(More)
Facial micro-expressions are brief involuntary spontaneous facial expressions which can reveal suppressed affect. However, previous studies ignored that different face regions have different contributions to micro-expression recognition. In this study, we proposed a method which employs weight of feature and weighted fuzzy classification to enhance the(More)
Emotion recognition became a key research issue in human-computer field. The inherent limitations are too many features to recognize emotions. However, the fusion of features may improve the performance, which was not investigated widely. This paper presents a study for emotion recognition by fusion features from multiple physiological signals. Four kinds(More)
Multi-atlas based MR image segmentation has been recognized as a quantitative analysis approach for brain. For such purpose, atlas databases keep increasing to include various anatomical characteristics of human brain. Atlas pre-selection becomes a necessary step for efficient and accurate automated segmentation of human brain images. In this study, we(More)
DTI (Diffusion Tensor Imaging) is a well-known MRI (Magnetic Resonance Imaging) technique which provides useful structural information about human brain. However, the quantitative measurement to physiological variation of subtypes of ischemic stroke is not available. An automatically quantitative method for DTI analysis will enhance the DTI application in(More)
BACKGROUND An important measure of the performance of a myoelectric (ME) control system for powered artificial limbs is the signal-to-noise ratio (SNR) at the output of ME channel. However, few studies illustrated the neuron-muscular interactive effects on the SNR at ME control channel output. In order to obtain a comprehensive understanding on the(More)
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