Trajectories of arm pointing movements on the sagittal plane vary with both direction and speed

Charalambos Papaxanthis, Thierry Pozzo, Marco Schieppati

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Five subjects performed arm upward and downward movements at different speeds (movement duration ranged from 0.26 to 1.2 s). Fingertip paths, velocity profiles and muscle activation patterns of arm and forearm were computed. Inspection of the electromyograph (EMG) revealed that for relatively slow speeds (>0.7 s) and for both directions, only the flexor muscles were active, mainly the anterior deltoid, for motor (upward) and braking action (downward) respectively. However, where gravity was no longer sufficient to accelerate downward and decelerate upward movements (

Original languageEnglish
Pages (from-to)498-503
Number of pages6
JournalExperimental Brain Research
Volume148
Issue number4
Publication statusPublished - Feb 2003

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Arm
Muscles
Gravitation
Forearm
Direction compound

Keywords

  • Arm movements
  • Dynamics
  • Electromyograph
  • Gravity
  • Kinematics
  • Motor control

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Trajectories of arm pointing movements on the sagittal plane vary with both direction and speed. / Papaxanthis, Charalambos; Pozzo, Thierry; Schieppati, Marco.

In: Experimental Brain Research, Vol. 148, No. 4, 02.2003, p. 498-503.

Research output: Contribution to journalArticle

Papaxanthis, C, Pozzo, T & Schieppati, M 2003, 'Trajectories of arm pointing movements on the sagittal plane vary with both direction and speed', Experimental Brain Research, vol. 148, no. 4, pp. 498-503.
Papaxanthis, Charalambos ; Pozzo, Thierry ; Schieppati, Marco. / Trajectories of arm pointing movements on the sagittal plane vary with both direction and speed. In: Experimental Brain Research. 2003 ; Vol. 148, No. 4. pp. 498-503.
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