Limb Position Drift: Implications for Control of Posture and Movement

Liana E. Brown, David A. Rosenbaum, Robert L. Sainburg

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

In the absence of visual feedback, subject reports of hand location tend to drift over time. Such drift has been attributed to a gradual reduction in the usefulness of proprioception to signal limb position. If this account is correct, drift should degrade the accuracy of movement distance and direction over a series of movements made without visual feedback. To test this hypothesis, we asked participants to perform six series of 75 repetitive movements from a visible start location to a visible target, in time with a regular, audible tone. Fingertip position feedback was given by a cursor during the first five trials in the series. Feedback was then removed, and participants were to continue on pace for the next 70 trials. Movements were made in two directions (30° and 120°) from each of three start locations (initial shoulder angles of 30°, 40°, 50°, and initial elbow angles of 90°). Over the 70 trials, the start location of each movement drifted, on average, 8 cm away from the initial start location. This drift varied systematically with movement direction, indicating that drift is related to movement production. However, despite these dramatic changes in hand position and joint configuration, movement distance and direction remained relatively constant. Inverse dynamics analysis revealed that movement preservation was accompanied by substantial modification of joint muscle torque. These results suggest that proprioception continues to be a reliable source of limb position information after prolonged time without vision, but that this information is used differently for maintaining limb position and for specifying movement trajectory.

Original languageEnglish (US)
Pages (from-to)3105-3118
Number of pages14
JournalJournal of neurophysiology
Volume90
Issue number5
DOIs
StatePublished - Nov 1 2003

Fingerprint

Posture
Extremities
Proprioception
Sensory Feedback
Hand Joints
Torque
Elbow
Hand
Joints
Muscles
Direction compound

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Physiology

Cite this

Brown, Liana E. ; Rosenbaum, David A. ; Sainburg, Robert L. / Limb Position Drift : Implications for Control of Posture and Movement. In: Journal of neurophysiology. 2003 ; Vol. 90, No. 5. pp. 3105-3118.
@article{2d9367fc009f4421ab81aa23753db1f0,
title = "Limb Position Drift: Implications for Control of Posture and Movement",
abstract = "In the absence of visual feedback, subject reports of hand location tend to drift over time. Such drift has been attributed to a gradual reduction in the usefulness of proprioception to signal limb position. If this account is correct, drift should degrade the accuracy of movement distance and direction over a series of movements made without visual feedback. To test this hypothesis, we asked participants to perform six series of 75 repetitive movements from a visible start location to a visible target, in time with a regular, audible tone. Fingertip position feedback was given by a cursor during the first five trials in the series. Feedback was then removed, and participants were to continue on pace for the next 70 trials. Movements were made in two directions (30° and 120°) from each of three start locations (initial shoulder angles of 30°, 40°, 50°, and initial elbow angles of 90°). Over the 70 trials, the start location of each movement drifted, on average, 8 cm away from the initial start location. This drift varied systematically with movement direction, indicating that drift is related to movement production. However, despite these dramatic changes in hand position and joint configuration, movement distance and direction remained relatively constant. Inverse dynamics analysis revealed that movement preservation was accompanied by substantial modification of joint muscle torque. These results suggest that proprioception continues to be a reliable source of limb position information after prolonged time without vision, but that this information is used differently for maintaining limb position and for specifying movement trajectory.",
author = "Brown, {Liana E.} and Rosenbaum, {David A.} and Sainburg, {Robert L.}",
year = "2003",
month = "11",
day = "1",
doi = "10.1152/jn.00013.2003",
language = "English (US)",
volume = "90",
pages = "3105--3118",
journal = "Journal of Neurophysiology",
issn = "0022-3077",
publisher = "American Physiological Society",
number = "5",

}

Limb Position Drift : Implications for Control of Posture and Movement. / Brown, Liana E.; Rosenbaum, David A.; Sainburg, Robert L.

In: Journal of neurophysiology, Vol. 90, No. 5, 01.11.2003, p. 3105-3118.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Limb Position Drift

T2 - Implications for Control of Posture and Movement

AU - Brown, Liana E.

AU - Rosenbaum, David A.

AU - Sainburg, Robert L.

PY - 2003/11/1

Y1 - 2003/11/1

N2 - In the absence of visual feedback, subject reports of hand location tend to drift over time. Such drift has been attributed to a gradual reduction in the usefulness of proprioception to signal limb position. If this account is correct, drift should degrade the accuracy of movement distance and direction over a series of movements made without visual feedback. To test this hypothesis, we asked participants to perform six series of 75 repetitive movements from a visible start location to a visible target, in time with a regular, audible tone. Fingertip position feedback was given by a cursor during the first five trials in the series. Feedback was then removed, and participants were to continue on pace for the next 70 trials. Movements were made in two directions (30° and 120°) from each of three start locations (initial shoulder angles of 30°, 40°, 50°, and initial elbow angles of 90°). Over the 70 trials, the start location of each movement drifted, on average, 8 cm away from the initial start location. This drift varied systematically with movement direction, indicating that drift is related to movement production. However, despite these dramatic changes in hand position and joint configuration, movement distance and direction remained relatively constant. Inverse dynamics analysis revealed that movement preservation was accompanied by substantial modification of joint muscle torque. These results suggest that proprioception continues to be a reliable source of limb position information after prolonged time without vision, but that this information is used differently for maintaining limb position and for specifying movement trajectory.

AB - In the absence of visual feedback, subject reports of hand location tend to drift over time. Such drift has been attributed to a gradual reduction in the usefulness of proprioception to signal limb position. If this account is correct, drift should degrade the accuracy of movement distance and direction over a series of movements made without visual feedback. To test this hypothesis, we asked participants to perform six series of 75 repetitive movements from a visible start location to a visible target, in time with a regular, audible tone. Fingertip position feedback was given by a cursor during the first five trials in the series. Feedback was then removed, and participants were to continue on pace for the next 70 trials. Movements were made in two directions (30° and 120°) from each of three start locations (initial shoulder angles of 30°, 40°, 50°, and initial elbow angles of 90°). Over the 70 trials, the start location of each movement drifted, on average, 8 cm away from the initial start location. This drift varied systematically with movement direction, indicating that drift is related to movement production. However, despite these dramatic changes in hand position and joint configuration, movement distance and direction remained relatively constant. Inverse dynamics analysis revealed that movement preservation was accompanied by substantial modification of joint muscle torque. These results suggest that proprioception continues to be a reliable source of limb position information after prolonged time without vision, but that this information is used differently for maintaining limb position and for specifying movement trajectory.

UR - http://www.scopus.com/inward/record.url?scp=0242425678&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242425678&partnerID=8YFLogxK

U2 - 10.1152/jn.00013.2003

DO - 10.1152/jn.00013.2003

M3 - Article

C2 - 14615428

AN - SCOPUS:0242425678

VL - 90

SP - 3105

EP - 3118

JO - Journal of Neurophysiology

JF - Journal of Neurophysiology

SN - 0022-3077

IS - 5

ER -