Dysphagia Screening: Contributions of Cervical Auscultation Signals and Modern Signal-Processing Techniques

摘要: Cervical auscultation is the recording of sounds and vibrations caused by human body from throat during swallowing. While traditionally done a trained clinician with stethoscope, much work has been put toward developing more sensitive clinically useful methods to characterize data obtained this technique. The eventual goal field improve effectiveness screening algorithms designed predict risk that swallowing disorders pose individual patients’ health safety. This paper provides an overview these signal-processing techniques summarizes recent advances made digital transducers in hopes organizing highly varied research on cervical auscultation. It investigates where are placed order record signal as well collection analog filtering used further quality. also presents wide array features signals, ranging simply counting number swallows occur over period time calculating various descriptive time, frequency, phase space domains. Finally, have classify into “normal” “abnormal” categories. Both linear nonlinear presented regard.