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Susceptibility To Acute Motion Sickness In Blind Persons
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Book Synopsis Susceptibility to Acute Motion Sickness in Blind Persons by : Ashton Graybiel
Download or read book Susceptibility to Acute Motion Sickness in Blind Persons written by Ashton Graybiel and published by . This book was released on 1970 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A group of twelve persons selected only on the basis of their visual defects were exposed to stressful Coriolis accelerations under standardized conditions. All demonstrated differences in susceptibility to acute motion sickness that bore no relation to their rank order of visual deprivation. Insofar as comparison with a group of normal subjects was made possible, no significant differences in susceptibility were demonstrable. It was concluded that vision is not an essential but rather a secondary etiologic factor in the genesis of motion sickness. This is not incompatible with the fact that symptoms characteristic of motion sickness may be visually induced in the absence of 'motion.' (Author).
Book Synopsis Susceptibility to Acute Motion Sickness in Blind Persons by : Ashton Graybiel
Download or read book Susceptibility to Acute Motion Sickness in Blind Persons written by Ashton Graybiel and published by . This book was released on 1970 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: A group of twelve persons selected only on the basis of their visual defects were exposed to stressful Coriolis accelerations under standardized conditions. All demonstrated differences in susceptibility to acute motion sickness that bore no relation to their rank order of visual deprivation. Insofar as comparison with a group of normal subjects was made possible, no significant differences in susceptibility were demonstrable. It was concluded that vision is not an essential but rather a secondary etiologic factor in the genesis of motion sickness. This is not incompatible with the fact that symptoms characteristic of motion sickness may be visually induced in the absence of 'motion.' (Author).
Book Synopsis Susceptibility to Acute Motion Sickness in Blind Persons by :
Download or read book Susceptibility to Acute Motion Sickness in Blind Persons written by and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A group of twelve persons selected only on the basis of their visual defects were exposed to stressful Coriolis accelerations under standardized conditions. All demonstrated differences in susceptibility to acute motion sickness that bore no relation to their rank order of visual deprivation. Insofar as comparison with a group of normal subjects was made possible, no significant differences in susceptibility were demonstrable. It was concluded that vision is not an essential but rather a secondary etiologic factor in the genesis of motion sickness. This is not incompatible with the fact that symptoms characteristic of motion sickness may be visually induced in the absence of 'motion.' (Author).
Book Synopsis The Influence of Vision on Susceptibility to Acute Motion Sickness Studied Under Quantifiable Stimulus-response Conditions by : Wilhelmus Johannes Oosterveld
Download or read book The Influence of Vision on Susceptibility to Acute Motion Sickness Studied Under Quantifiable Stimulus-response Conditions written by Wilhelmus Johannes Oosterveld and published by . This book was released on 1971 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Vision on Susceptibility to Acute Motion Sickness Studies Under Quantifiable Stimulus-Response Conditions by :
Download or read book The Influence of Vision on Susceptibility to Acute Motion Sickness Studies Under Quantifiable Stimulus-Response Conditions written by and published by . This book was released on 1971 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-four healthy men, 22 to 25 years of age, were exposed to stressful accelerations in a rotating room until acute mild motion sickness was elicited. Thirteen subjects in one group were exposed first with eyes open and later with eyes covered; the verse order was used with the remaining eleven in the other group. The stressful accelerations were generated by requiring the subject to execute 120 standardized head movements at each 1-rpm increase in angular velocity until the desired endpoint was reached. This endpoint was 12 units on a scale where a score of 15 points represented the highest level of mild motion sickness and a score of 16, the lowest level of frank motion sickness. In the 48 experimental trials the average was 12.2 points when the endpoint was reached, and the range was 10 to 16 points. Thus, the terminal angular velocity required to achieve a given endpoint furnished a single value for comparing susceptibility between and among subjects; the range was 4 to 14 rpm. When susceptibility to motion sickness with eyes open and covered is compared, 19 subjects were more susceptible with eyes open, three with eyes covered, and in the reamining two susceptibility was the same. Among subjects manifesting greater susceptibility with eyes open than covered the group differences were small, indicating little or no adaptation effects.
Book Synopsis Motion Sickness Susceptibility Under Weightless and Hypergravity Conditions Generated by Parabolic Flight by : Earl F. Miller (II)
Download or read book Motion Sickness Susceptibility Under Weightless and Hypergravity Conditions Generated by Parabolic Flight written by Earl F. Miller (II) and published by . This book was released on 1969 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Motion sickness susceptibility of five labyrinthine-defective (L-D) and 25 normal subjects was tested under the force environments encountered in parabolic flight (0 g and hyper-g). The L-D subjects were uniformly symptomless, while the normal subjects revealed great inter- and intra-individual differences in susceptibility to motion sickness provoked by standardized head movements during: (1) the hypergravic and (2) the weightless phases of the parabolic maneuver while restrained; and (3) the weightless phase while being rotated in a chair. Four of six subjects tested under condition 1 were completely unaffected by the condition while two reacted with symptoms. Condition 2 provoked severe symptoms in five of the twelve subjects tested and moderate symptoms in one. Fifteen subjects tested under condition 3 revealed either a marked increase or decrease in susceptibility to Coriolis acceleration in weightlessness compared to terrestrial baseline measurements. (Author).
Book Synopsis Altered Susceptibility to Motion Sickness as a Function of Subgravity Level by : Earl F. Miller II
Download or read book Altered Susceptibility to Motion Sickness as a Function of Subgravity Level written by Earl F. Miller II and published by . This book was released on 1971 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Subjective Estimates of Well-being During the Onset and Remission of Motion Sickness Symptomatology in the Slow Rotation Room by : James T. Reason
Download or read book Changes in Subjective Estimates of Well-being During the Onset and Remission of Motion Sickness Symptomatology in the Slow Rotation Room written by James T. Reason and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The onset of motion sickness is characterized by a decline in generalized feelings of well-being. In this study, an attempt was made to quantify these subjective changes during the experimental production of motion sickness in the Slow Rotation Room. A simple eleven-point rating scale was used to measure the well-being state. The nature and the time of onset of symptoms were recorded independently. Systematic relationships were obtained between the amount of stimulation required to produce the Malaise 111 endpoint and the rate of change of well-being. In general, relatively susceptible individuals showed on immediate decline in well-being at the onset of the stimulus which continued to fall sharply until the endpoint was reached. With increasing resistance to motion sickness, this point of rapid decline ('avalanche phenomenon') was proportionately delayed. The point on the rating scale at which this rapid decline began was relatively consistent across all subjects. Various positions along the well-being scale were consistently associated with specific constellations of symptoms. The recovery of well-being, following the cessation of the stimulus, appeared to be slower in individuals of low susceptibility than in those who were highly susceptible. (Author).
Book Synopsis Comparison of Five Levels of Motion Sickness Severity as the Basis for Grading Susceptibility by : Earl F. Miller (II)
Download or read book Comparison of Five Levels of Motion Sickness Severity as the Basis for Grading Susceptibility written by Earl F. Miller (II) and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Coriolis (motion) sickness susceptibility index (CSSI) of 275 healthy male subjects was calculated from data obtained by a standardized laboratory procedure at each of five specific levels of motion sickness severity, viz, frank sickness (FS), severe malaise (M III), moderate malaise (M IIA and M IIB), and mild malaise (M I). The stressor value (E factor) of a single standardized head movement associated with each rotational rate of the test chair was adjusted to yield an equivalent CSSI score independent of the endpoint selected. Close agreement among the CSSI scores obtained at each endpoint was found in intercorrelations, test-retest reliability coefficients (N = 30), and frequency distributions that reflected the orderliness and stability in the appearance, ramification, and intensification of the acute symptomatology evoked in progressing from M I to FS. The endpoint M IIA appeared, however, to yield the best balance between subject acceptability and test confidence, and was used without exception to calibrate the motion sickness susceptibility of 250 additional subjects. (Author).
Book Synopsis Motion Sickness Precipitated in the Weightless Phase of Parabolic Flight by Coriolis Accelerations by : Ashton Graybiel
Download or read book Motion Sickness Precipitated in the Weightless Phase of Parabolic Flight by Coriolis Accelerations written by Ashton Graybiel and published by . This book was released on 1969 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nineteen normal persons and three deaf subjects with bilateral loss of labyrinthine function (L-D subjects) were exposed to Coriolis accelerations during the brief periods of weightlessness in parabolic flighy by having them move their heads while rotating in a Barany chair at 30 rpm. None of the L-D but all of the normal subjects except three experienced motion sickness: Only one of eight subjects selected on the basis of insusceptibility to symptoms in standard parabolic flights was free of symptoms; the other seven were motion sick and completed on the average only six parabolas. Two of three subjects selected primarily on the basis of low susceptibility to Coriolis acceleration in a slow rotation room were symptom free, and one was motion sick but his level of symptoms did not reach the end point of severe malaise during ten parabolas. In addition to demonstrating susceptibility to motion sickness when exposed to Coriolis acceleration in the weightless phase of parabolic flight, the findings are important in emphasizing the difficulty in predicting susceptibility to motion sickness in novel force environments. (Author).
Book Synopsis Evaluation of Sixteen Antimotion Sickness Drugs Under Controlled Laboratory Conditions by : Charles D. Wood
Download or read book Evaluation of Sixteen Antimotion Sickness Drugs Under Controlled Laboratory Conditions written by Charles D. Wood and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effectiveness of a drug in reducing susceptibility to acute motion sickness is readily determined in a slow rotation room (SRR) where the stressful Coriolis accelerations are under quantitative control and the experimenter and subject can collaborate under laboratory conditions. Fifty subjects were used, each serving as his own control, in evaluating 16 representative antimotion sickness drugs. Only the drugs with a sympathomimetic or parasympatholytic action and some of the antihistamines were notably effective. The summation effect of dextroamphetamine sulfate and 1-scopolamine hydrobromide provided far better protection than any single drug. Other classes of drugs had either a slightly favorable or slightly unfavorable action. (Author).
Book Synopsis The Relationship of Visual-perceptual Skills, Vision and Physical Attributes to Motion Sickness Susceptibility [microform] by : Ricki Lisa Ladowsky
Download or read book The Relationship of Visual-perceptual Skills, Vision and Physical Attributes to Motion Sickness Susceptibility [microform] written by Ricki Lisa Ladowsky and published by National Library of Canada. This book was released on 1987 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Study 3 also examined the relationship of several measures of vision to motion sickness susceptibility. Males and females with good vision appeared to be more susceptible to motion sickness than males and females with poor vision. This is not what was predicted on the basis of study 2.
Book Synopsis Susceptibility to Motion Sickness in Trained and Untrained Individuals by : Erik Leon Olav Seedhouse
Download or read book Susceptibility to Motion Sickness in Trained and Untrained Individuals written by Erik Leon Olav Seedhouse and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Motion and Space Sickness by : George H. Crampton
Download or read book Motion and Space Sickness written by George H. Crampton and published by CRC Press. This book was released on 1990-01-17 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compendium, written by active researchers in the field, encompasses topics ranging from anatomical and physiological subjects, through analyses of stimulus characteristics, prediction of sickness, and consideration of human factors, to pharmacological and behavioral therapeutic measures for terrestrial as well as microgravity travelers. Material often found scattered in diverse journals, paper-bound proceedings of symposia, difficult-to-find laboratory reports, or included with other topics in collections having a diffuse focus, are presented here in one volume dedicated to a single theme. The critical up-to-date- reviews are a first source for researchers and research program managers as well as an essential information source for engineers and practitioners.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309439981 Total Pages :587 pages Book Rating :4.3/5 (94 download)
Book Synopsis Making Eye Health a Population Health Imperative by : National Academies of Sciences, Engineering, and Medicine
Download or read book Making Eye Health a Population Health Imperative written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-01-15 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to see deeply affects how human beings perceive and interpret the world around them. For most people, eyesight is part of everyday communication, social activities, educational and professional pursuits, the care of others, and the maintenance of personal health, independence, and mobility. Functioning eyes and vision system can reduce an adult's risk of chronic health conditions, death, falls and injuries, social isolation, depression, and other psychological problems. In children, properly maintained eye and vision health contributes to a child's social development, academic achievement, and better health across the lifespan. The public generally recognizes its reliance on sight and fears its loss, but emphasis on eye and vision health, in general, has not been integrated into daily life to the same extent as other health promotion activities, such as teeth brushing; hand washing; physical and mental exercise; and various injury prevention behaviors. A larger population health approach is needed to engage a wide range of stakeholders in coordinated efforts that can sustain the scope of behavior change. The shaping of socioeconomic environments can eventually lead to new social norms that promote eye and vision health. Making Eye Health a Population Health Imperative: Vision for Tomorrow proposes a new population-centered framework to guide action and coordination among various, and sometimes competing, stakeholders in pursuit of improved eye and vision health and health equity in the United States. Building on the momentum of previous public health efforts, this report also introduces a model for action that highlights different levels of prevention activities across a range of stakeholders and provides specific examples of how population health strategies can be translated into cohesive areas for action at federal, state, and local levels.
Book Synopsis Physical Ergonomics and Human Factors by : Ravindra S. Goonetilleke
Download or read book Physical Ergonomics and Human Factors written by Ravindra S. Goonetilleke and published by AHFE Conference. This book was released on 2024-07-24 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 15th International Conference on Applied Human Factors and Ergonomics and the Affiliated Conferences, Nice, France, 24-27 July 2024.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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