Abstract
Medical Journal of AustraliaVolume 2, Issue 18 p. 838-839 Comment ADVANCES IN CLINICAL NEUROPHYSIOLOGY First published: 01 November 1973 https://doi.org/10.5694/j.1326-5377.1973.tb76575.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume2, Issue18November 1973Pages 838-839 RelatedInformation
Highlights
The measurement of motor unit action potentials (MUAPs) duration is a matter of particular difficulty
Difficult is placement of a MUAP's endpoint marker, and this is reflected in the high degree of variability observed in manual measurements of MUAP duration
Neither is the accuracy of automatic measurement of MUAP duration good, and continuous supervision and frequent manual revision of duration marker position are necessary. (Figure 13)
Summary
Goal directed movements are organized via perceptual information that is relevant to movement situation. Even in a simple movement of reaching out a glass on a table and grasping it, the configuration and orientation of hand and fingers should be organized with respect to the size, shape, and orientation of the glass. According to the study on prehensile movements, the size of aperture shaped by an index finger and a thumb to grasp an object was organized with respect to the size of the object such that the peak aperture was observed well before the hand reaches the object and the peak value was linearly scaled to the object’s size (Jeannerod, 1981, 1984). For pre-shaping the aperture and temporally organizing the reaching-grasping components, perceptual information about the object size and the time to the hand-object contact is crucial. How perceptual process plays a role for organizing a movement and what/how perceptual information is utilized for the movement organization have been major issues in the study of motor control
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