{"title":"人的手臂是由可调弹簧制成的吗?","authors":"F. Popescu, Z. Rymer","doi":"10.1109/IEMBS.1996.651877","DOIUrl":null,"url":null,"abstract":"A study was conducted to determine in what physiological conditions, if any, the human arm deviated from 'spring-like' behavior during movement. Simple, short force pulses applied in mid-motion were found to consistently shift the desired endpoint of a movement across all four subjects. Far from being spring-like, the human arm during simple point-to-point movement did not behave in a conservative manner and could not even be described as a stable passive dynamic system around a desired trajectory. In fact, muscle properties and automatic reflex response can result in significant deviations from the desired trajectory, with over-compensation in the form of an active response, without changes in 'central command'.","PeriodicalId":20427,"journal":{"name":"Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1996-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Is the human arm made of tunable springs?\",\"authors\":\"F. Popescu, Z. Rymer\",\"doi\":\"10.1109/IEMBS.1996.651877\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A study was conducted to determine in what physiological conditions, if any, the human arm deviated from 'spring-like' behavior during movement. Simple, short force pulses applied in mid-motion were found to consistently shift the desired endpoint of a movement across all four subjects. Far from being spring-like, the human arm during simple point-to-point movement did not behave in a conservative manner and could not even be described as a stable passive dynamic system around a desired trajectory. In fact, muscle properties and automatic reflex response can result in significant deviations from the desired trajectory, with over-compensation in the form of an active response, without changes in 'central command'.\",\"PeriodicalId\":20427,\"journal\":{\"name\":\"Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1996-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IEMBS.1996.651877\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEMBS.1996.651877","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A study was conducted to determine in what physiological conditions, if any, the human arm deviated from 'spring-like' behavior during movement. Simple, short force pulses applied in mid-motion were found to consistently shift the desired endpoint of a movement across all four subjects. Far from being spring-like, the human arm during simple point-to-point movement did not behave in a conservative manner and could not even be described as a stable passive dynamic system around a desired trajectory. In fact, muscle properties and automatic reflex response can result in significant deviations from the desired trajectory, with over-compensation in the form of an active response, without changes in 'central command'.
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