Abstract
Locked-in syndrome eventually arises mainly when a person is quadriplegic and has no way to produce any muscular movements. The affected person cannot communicate but is aware of their surroundings; the patient is able to hear and see and has normal intelligence and reasoning ability but may only communicate with eye movements. So we deployed a communication device that suitably produces audio command crucially based on the blink movements. We recorded blink signal from eye movements by placing appropriate surface electrodes at the standardized locations. An efficient algorithm for detecting the occurrence of eye blinks was developed. In this protocol we used a software called NI LabVIEW, which is a graphical stimulation software. Many of these patients find great difficulty in expressing what they feel and what they want. In order for them to overcome these difficulties we have built a virtual talk module using LabVIEW. We have used a set of LEDs which will be toggling, the patient will be able to select the preferred LED through an eye blink. On doing so, a voice file which is attached to that corresponding LED gets played (these voice files are some essential or basic needs of a person). Each LED will have a particular wording corresponding to it. This aids the patient in selecting the correct LED. The communication system has voice module and thus provides more comfortable and less frustrating method of access to the subject as they can convey their thoughts faster. Also few pulses were required from the subject for usage of the system. This system is highly suitable for those who are bed ridden and require communication of their needs to others for helping them do their day to day basic needs.
Published Version
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