Electrophysiological Interactive Computer Systems
New interactive computing applications are continually being developed in a bid to support people’s changing work and recreational activities. As research focuses on one particular class interactive systems, high level models of interaction are formulated and requirements emerge that reflect shared features or common functionality among those systems. The existence of models of interaction and shared functional requirements mean that support tools can be created which ease the subsequent development of these systems. The type of tool that interactive systems developers are most familiar with is a library of reusable code that can be used for prototyping and building interactive applications and their interfaces.
A new class of interactive system is identified, based on shared requirements for detection, processing and presentation of human physiological information. This is electro physiological interactive computers systems. It is envisaged that the work will serve as a jumping of point for others interested in exploring the potential of incorporating physiological information into the human machine relationship. A method of hands free of human computer interaction currently under investigation is based on the detection of consciously controllable human physiological information. This physiological information can be processed electrically and thereafter transformed into computer control signals and commands.
INTRODUCTION
EPICS is a new class of interactive system based on detection, processing and presentation of human physiological information .A user physically manipulates an electromechanical device to initiate a computer operation requires the periodic dedication one or both hands. Unfortunately many people work in environments where their hands are fully occupied with other physical tasks. Examples include surgeons, fitters, maintenance engineers, aircraft flight crew and drivers of heavy goods, passenger and private vehicles. In all of these situations, access to information would be better served by alternative, hands-free access control. A further limitation of existing mechanical models of interaction is that they exclude access to those individuals for whom normal physical control is either difficult or impossible. It is clear that supplemental methods of human-machine interaction to those currently available are needed.
EPICS are interactive systems in which the physiological information can be processed electrically and thereafter transformed into computer control signals and commands. Using specialised electronic sensing equipment it is possible to both detect and make available in digital format information pertaining to a wide range of human physiology. Physiological sensing equipment can be used in order to train individuals to gain conscious control over a range of physiological parameters including heart rate, muscle tension and brain activity. The process of making physiological information available to a subject who is being trained to control some aspect of his or her own physiology is known as bio feed back. After training, physiological signals can be applied to hands free human machine control. It can utilize electrical brain activity to directly control a cursor on a computer screen and to input alphanumeric character using a soft keyboard….
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