IEEE transactions on bio-medical engineering
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IEEE Trans Biomed Eng · Feb 1997
A silicon bidirectional flow sensor for measuring respiratory flow.
We describe a solid-state, silicon integrated, bidirectional flow sensor for respiratory applications. The sensor is a thermal vector sensor. ⋯ The effect of changes in gas composition as used in mechanically ventilated patients on the sensor output signal are estimated to be less than 2%. The temperature sensitivity is about -1.5% per degree Celsius.
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IEEE Trans Biomed Eng · Feb 1997
Comparative StudyRecognition of temporally changing action potentials in multiunit neural recordings.
We present a method to iteratively train an artificial neural network (ANN) or other supervised pattern classifier in order to adaptively recognize and track temporally changing patterns. This method uses recently acquired data and the existing classifier to create new training sets, from which a new classifier is then trained. ⋯ This scheme was evaluated by applying it to simulated situations that arise in chronic recordings of multiunit neural activity from peripheral nerves. The method was able to track the changes in these simulated chronic recordings and to provide better unit recognition rates than an unsupervised clustering method suited to this problem.