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and topical NMR studies directed toward.a better understanding of the nature of trabecular bone are of interest Biomagnetic Studies of Cognitive and Neurophysiological Processes JD Hestenes 44 40 04 27 Experimental and theoretical studies will be undertaken of evoked magnetic fields and evoked potentials from the brain during cognitive task performance under various stresses such as zero gravity, accelerations, and high cognitive work load Principle interest is in the measurement of endogenous components of the evoked responses These responses will be related to human work-load studies and assessment of residual cognitive capacity for basic research in cognitive psychophysiology and for applications in man-machine interactions Brainstem responses, particularly from the vestibular system, will be examined to determine their characteristics and relationship to motion sickness Miniaturized neuromagnetometer research and development work aims at an array of sensors suitable for high-performance human-machine studies These incorporate modern dc SQUIDS and cascaded Joule-Thomson refrigerator systems This opportunity may involve participation in currently planned experiments or the conception of new scientific or technological advances Applications may include studies of human behavior and performance in Shuttle experiments or in space-stauon environments as well as studies m several ground-based environments Applicants should have backgrounds with experience in combinations or cognitive psychology, neurophysiology, biomedical engineering, physics, laboratory computers, signal processing, SQUID devices, or low-temperature physics Observational Systems Division Optical Sciences Research J B Breckinridge 44 40 55 01 Advances in optical and infrared instrument science and technology stimulate new scientific discoveries Opucal sciences research encompasses the study of radiation in the optical and infrared portions of the electromagnetic spectrum between 0 1 and 20 pim wavelength Research acUvity is conveniendy partitioned into several areas, depending on the mathematical tools applied to model the radiation for a particular application Six of these are (1) first-order layout of optical systems (described by ray tracing)
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statistical optics, (5) laser physics, and (6)
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