Browsing by Subject "Biological control systems"
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Item Implications of electromyographic feedback for essential hypertensive patients.(Texas Tech University, 1975-05) Fray, John MichaelThe general purpose of the present study was to investigate hypothesized therapeutic aspects of biofeedback relaxation techniques in controlling diastolic blood pressure. There have been reports from the Far East for several hundred years of yogis who have been able to control bodily functions normally not under the control of the autonomic nervous system, such as heartbeat, body temperature, and amount of oxygen taken in. These early reports indicated the possibility of gaining voluntary control over internal bodily functions (Kamiya, Barber, DiCara, Miller, Shapiro, & Stoyva, 1971). However, these reports did not suggest techniques by which voluntary control could be taught to a sample of selected individuals. To be widely applied, some feasible techniques had to be developed for the control of internal bodily functions (Kamiya et al., 1971).Item Information projections in learning(Texas Tech University, 1999-08) Kirupaharan, NadarajahThis thesis is aimed at discussing the relevance of the theory of reference frames in mathematical psychology in understanding the differences between biological and engineering control systems. As an example, the problem of human posture control is discussed via the use of a simplified model. The head, upper torso, and the upper legs are represented as straight lines with point masses attached to their mid points. The fact that as a child first learns to balance head with his mother's help, then the hip while sitting, and then the knee is taken into account in this representation. If the problem of the control of the head is P1, the head and the upper torso is P2 and everything above the knee is P3, it is contended that the solution of P2 is a natural extension of the solution of P1 and the solution of P3 is a natural extension of the solution of P2. Subsequently each problem is considered individually. At each stage, control laws for torque are written in terms of position, velocity and acceleration variables. Our theory leads to a natural solution which is consistent with everyday observations of how a child masters posture control.