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Development of Reaching during the First Year: Role of Movement Speed

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Development of Reaching during the First Year : Role of Movement Speed. / Thelen, Esther; Corbetta, Daniela; Spencer, John P.

In: Journal of Experimental Psychology: Human Perception and Performance, Vol. 22, No. 5, 10.1996, p. 1059-1076.

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@article{4b25097fe4d646e4a1645bb0dac6a850,
title = "Development of Reaching during the First Year: Role of Movement Speed",
abstract = "When infants first learn to reach at about 4 months, their hand paths are jerky and tortuous, but their reaches become smoother and straighter over the first year. Here the authors consider the role of the underlying limb dynamics, which scale with movement speed, on the development of trajectory control. The authors observed 4 infants weekly and then biweekly from reach onset to 1 year. Improvements in trajectories were not linear, but showed plateaus and regressions in straightness and smoothness. When infants' nonreaching movements were fast, their reaches were also fast, and faster reaches were also less straight. This is consistent with an equilibrium trajectory form of control, where development involves the increasing ability to stabilize the trajectory against self-generated movement perturbations.",
author = "Esther Thelen and Daniela Corbetta and Spencer, {John P.}",
year = "1996",
month = oct,
language = "English",
volume = "22",
pages = "1059--1076",
journal = "Journal of Experimental Psychology: Human Perception and Performance",
issn = "0096-1523",
publisher = "American Psychological Association Inc.",
number = "5",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Development of Reaching during the First Year

T2 - Role of Movement Speed

AU - Thelen, Esther

AU - Corbetta, Daniela

AU - Spencer, John P.

PY - 1996/10

Y1 - 1996/10

N2 - When infants first learn to reach at about 4 months, their hand paths are jerky and tortuous, but their reaches become smoother and straighter over the first year. Here the authors consider the role of the underlying limb dynamics, which scale with movement speed, on the development of trajectory control. The authors observed 4 infants weekly and then biweekly from reach onset to 1 year. Improvements in trajectories were not linear, but showed plateaus and regressions in straightness and smoothness. When infants' nonreaching movements were fast, their reaches were also fast, and faster reaches were also less straight. This is consistent with an equilibrium trajectory form of control, where development involves the increasing ability to stabilize the trajectory against self-generated movement perturbations.

AB - When infants first learn to reach at about 4 months, their hand paths are jerky and tortuous, but their reaches become smoother and straighter over the first year. Here the authors consider the role of the underlying limb dynamics, which scale with movement speed, on the development of trajectory control. The authors observed 4 infants weekly and then biweekly from reach onset to 1 year. Improvements in trajectories were not linear, but showed plateaus and regressions in straightness and smoothness. When infants' nonreaching movements were fast, their reaches were also fast, and faster reaches were also less straight. This is consistent with an equilibrium trajectory form of control, where development involves the increasing ability to stabilize the trajectory against self-generated movement perturbations.

UR - http://www.scopus.com/inward/record.url?scp=0030266817&partnerID=8YFLogxK

M3 - Article

C2 - 8865616

AN - SCOPUS:0030266817

VL - 22

SP - 1059

EP - 1076

JO - Journal of Experimental Psychology: Human Perception and Performance

JF - Journal of Experimental Psychology: Human Perception and Performance

SN - 0096-1523

IS - 5

ER -

ID: 64348616