This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ...means a curve of the speed of the movement--similar to the curve of muscular contraction--is obtained, and any little additions to the movement can be detected. As representing the standard curve of a movement governed entirely by its initial adjustment, we take the curve of ' automatic ' movements. Since no attention ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ...means a curve of the speed of the movement--similar to the curve of muscular contraction--is obtained, and any little additions to the movement can be detected. As representing the standard curve of a movement governed entirely by its initial adjustment, we take the curve of ' automatic ' movements. Since no attention was paid to the extent of these movements, there is no call for later adjustments. With this standard we may compare the curves obtained when each movement was required to imitate the preceding, or to terminate at a given line. We may compare movements also at different speeds, and of the right and left hands. The comparison will reveal the causes of the differences in accuracy between these several movements. See Figs. 9 and 10: F1g. 9. Tracings on a rapid kymograph of different sorts of movements: a, automatic; b, eyes shut, left hand; c, eyes shut, right hand; d, eyes open, left hand; e, eyes open, right hand. Rate, 20 movements per minute. The movements with eyes shut were required to be equal, each to the preceding. Those with eyes open were required to terminate on a line previously ruled on the paper. Selected records (not continuous). Reduced to % original size. The most striking difference between these tracings is that between the sharpness of their tops. At the slowest rate the automatic movement gives a sharper top than any other, and the studied movements with eyes open the bluntest. The order of sharpness is: automatic, left hand with eyes shut, right hand with eyes shut, left hand with eyes open, right hand with eyes open. Letters have the same F1g. 1o. Same as Fig. 9, but at rates of 40, 8o, and 120. meanings as in Fig. 9. The blunt top is an expression of extreme slowness of movement at the close. To make up for this, the begi...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Add this copy of The Accuracy of Voluntary Movement to cart. $35.58, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
