This study aims to demonstrate the feasibility of using a new wireless electroencephalography (EEG)-electromyography (EMG) wearable approach to generate characteristic EEG-EMG mixed patterns with mouth movements in order to detect distinct movement patterns for severe speech impairments. This paper describes a method for detecting mouth movement based on a new signal processing technology suitable for sensor integration and machine learning applications. This paper examines the relationship between the mouth motion and the brainwave in an effort to develop nonverbal interfacing for people who have lost the ability to communicate, such as people with paralysis.
View Article and Find Full Text PDFJ Mech Behav Biomed Mater
February 2023
The characterization of soft tissues remains a vital need for various bioengineering and medical fields. Developing areas such as regenerative medicine, robot-aided surgery, and surgical simulations all require accurate knowledge about the mechanical properties of soft tissues to replicate their mechanics. Mechanical properties can be characterized through several different characterization techniques such as atomic force microscopy, compression testing, and tensile testing.
View Article and Find Full Text PDFObtaining the mechanical properties of soft tissues is critical in many medical fields, such as regenerative medicine and surgical simulation training. Although various tissue-characterization methods have been developed, such as AFM, indentation, and elastography, there remain some limitations on their accuracy and validity for measuring small and fragile soft tissues. This paper presents a tensile testing technique to measure the mechanical properties of soft tissues directly and accurately.
View Article and Find Full Text PDFIn optical metrology, fringe projection and moire techniques have been widely used to measure the topography of objects. We can combine the advantages of the two techniques by applying a configuration of simultaneous dual projection in the fringe projection technique, which generates a superimposed fringe pattern containing a moire pattern that is phase modulated according to the topography. In this work, we present an analytic and comparative study of three methods to demodulate the phase of the moire pattern: the spatial, spatial-temporal, and temporal methods.
View Article and Find Full Text PDFPurpose: To determine expression levels of annexin I (lipocortin I) in patient-matched benign prostatic epithelium (BPE), high-grade prostatic intraepithelial neoplasia (HGPIN), and prostate cancer (CaP). EXPERIMETNAL DESIGN: Annexin I protein expression was examined with a standard immunohistochemical protocol in 69 radical prostatectomy specimens, 45 of which also contained HGPIN. Immunostained sections were scored visually by a genitourinary pathologist and mean optical density was measured with digital image analysis.
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