Automatic Detection of Seizures with Applications

There are an estimated two million people with epilepsy in the United States. Many of these people do not respond to anti-epileptic drug therapy. Two devices can be developed to assist in the treatment of epilepsy. The first is a microcomputer-based system designed to process massive amounts of electroencephalogram (EEG) data collected during long-term monitoring of patients for the purpose of diagnosing seizures, assessing the effectiveness of medical therapy, or selecting patients for epilepsy surgery. Such a device would select and display important EEG events. Currently many such events are missed. A second device could be implanted and would detect seizures and initiate therapy. Both of these devices require a reliable seizure detection algorithm. A new algorithm is described. It is believed to represent an improvement over existing seizure detection algorithms because better signal features were selected and better standardization methods were used

The essential theory of consciousness

This paper makes an in-depth analysis of the phenomenon of consciousness from four aspects: the theory of subject perspective, the essence of consciousness, the structure of the world model of consciousness and the principle of consciousness intelligence. Firstly, through the theoretical framework of the subject perspective, this paper points out that consciousness is the content change of the subject perspective, which corresponds to the structural changes of the entity. Then, this paper discusses the essence of consciousness and animal explicit consciousness, and analyzes how consciousness is interrelated with the main structure, neural network structure, and objective world. Then, this paper analyzes the world model of consciousness, and puts forward the idea of combining six phased models to form a whole model. Finally, this paper discusses the principle of consciousness intelligence, and points out that consciousness intelligence is a multi-cell collaborative overall feedback to record natural change data and form a data structure model. Therefore, the model of predicting changes in advance can be infered from the data structure model, and the model of operating mechanism of consciousness feedback is proposed

Enskog and van der Waals play hockey

We consider the mean free path of a hockey puck in a system of other pucks on an air table, and show how the simple low-density kinetic-theory value for this mean free path can be extended to higher densities. This approach is connected both with the Enskog theory of the transport properties of dense gases and with the van der Waals theory of the equation of state of dense gases. We derive several simple approximations for the high-density mean free path, and compare the results with each other, with accurate computer-simulation results, and with experimental results obtained in the freshman physics laboratory of the University of Maryland. We present the arguments in both simplified and more elaborate forms

Spinal Cord Compression Complicating Subarachnoid Infusion of Morphine: Case Report and Laboratory Experience

Abstract The intraspinal administration of morphine has been employed increasingly in the management of intractable pain of malignant as well as benign origin. We have encountered a previously unreported clinical complication: spinal cord compression by an inflammatory tissue mass surrounding a subarachnoid infusion catheter administering morphine. leading to paraplegia. The patient was referred to our institution after catheter and pump implantation for chronic, intractable pain associated with pre-existing lumbar arachnoid fibrosis, after multiple myelograms and surgeries. The patient may. therefore, have had an underlying propensity to foreign body reactions. We have encountered a similar phenomenon, however, in a canine laboratory model. The pathological features in both our patient and our laboratory preparation, with inflammatory tissue masses around the tip of the catheter but not around proximal subarachnoid segments, suggest an effect related to infusion. as opposed to infection or the presence of the catheter. We review the pathological features in both settings and the pertinent literature.</jats:p