Two agents in the brain: Motor control of unimanual and bimanual reaching movements

Tomohisa Asai, Eriko Sugimori, Yoshihiko Tanno

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Previous studies have suggested that the left and right hands have different specialties for motor control that can be represented as two agents in the brain. This study examined how coordinated movements are performed during bimanual reaching tasks to highlight differences in the characteristics of the hands. We examined motor movement accuracy, reaction time, and movement time in right-handed subjects performing a three-dimensional motor control task (visually guided reaching). In the no-visual-feedback condition, right-hand movement had lower accuracy and a shorter reaction time than did left-hand movement, whereas bimanual movement had the longest reaction time, but the best accuracy. This suggests that the two hands have different internal models and specialties: closed-loop control for the right hand and open-loop control for the left hand. Consequently, during bimanual movements, both models might be used, creating better control and planning (or prediction), but requiring more computation time compared to the use of one hand only.

Original languageEnglish
Article numbere10086
JournalPLoS One
Volume5
Issue number4
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Brain
hands
Hand
brain
Reaction Time
Sensory Feedback
Feedback
Planning
planning
prediction

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Two agents in the brain : Motor control of unimanual and bimanual reaching movements. / Asai, Tomohisa; Sugimori, Eriko; Tanno, Yoshihiko.

In: PLoS One, Vol. 5, No. 4, e10086, 2010.

Research output: Contribution to journalArticle

@article{ba0818667b9c4886ac8accf067f7a344,
title = "Two agents in the brain: Motor control of unimanual and bimanual reaching movements",
abstract = "Previous studies have suggested that the left and right hands have different specialties for motor control that can be represented as two agents in the brain. This study examined how coordinated movements are performed during bimanual reaching tasks to highlight differences in the characteristics of the hands. We examined motor movement accuracy, reaction time, and movement time in right-handed subjects performing a three-dimensional motor control task (visually guided reaching). In the no-visual-feedback condition, right-hand movement had lower accuracy and a shorter reaction time than did left-hand movement, whereas bimanual movement had the longest reaction time, but the best accuracy. This suggests that the two hands have different internal models and specialties: closed-loop control for the right hand and open-loop control for the left hand. Consequently, during bimanual movements, both models might be used, creating better control and planning (or prediction), but requiring more computation time compared to the use of one hand only.",
author = "Tomohisa Asai and Eriko Sugimori and Yoshihiko Tanno",
year = "2010",
doi = "10.1371/journal.pone.0010086",
language = "English",
volume = "5",
journal = "PLoS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "4",

}

TY - JOUR

T1 - Two agents in the brain

T2 - Motor control of unimanual and bimanual reaching movements

AU - Asai, Tomohisa

AU - Sugimori, Eriko

AU - Tanno, Yoshihiko

PY - 2010

Y1 - 2010

N2 - Previous studies have suggested that the left and right hands have different specialties for motor control that can be represented as two agents in the brain. This study examined how coordinated movements are performed during bimanual reaching tasks to highlight differences in the characteristics of the hands. We examined motor movement accuracy, reaction time, and movement time in right-handed subjects performing a three-dimensional motor control task (visually guided reaching). In the no-visual-feedback condition, right-hand movement had lower accuracy and a shorter reaction time than did left-hand movement, whereas bimanual movement had the longest reaction time, but the best accuracy. This suggests that the two hands have different internal models and specialties: closed-loop control for the right hand and open-loop control for the left hand. Consequently, during bimanual movements, both models might be used, creating better control and planning (or prediction), but requiring more computation time compared to the use of one hand only.

AB - Previous studies have suggested that the left and right hands have different specialties for motor control that can be represented as two agents in the brain. This study examined how coordinated movements are performed during bimanual reaching tasks to highlight differences in the characteristics of the hands. We examined motor movement accuracy, reaction time, and movement time in right-handed subjects performing a three-dimensional motor control task (visually guided reaching). In the no-visual-feedback condition, right-hand movement had lower accuracy and a shorter reaction time than did left-hand movement, whereas bimanual movement had the longest reaction time, but the best accuracy. This suggests that the two hands have different internal models and specialties: closed-loop control for the right hand and open-loop control for the left hand. Consequently, during bimanual movements, both models might be used, creating better control and planning (or prediction), but requiring more computation time compared to the use of one hand only.

UR - http://www.scopus.com/inward/record.url?scp=77956312546&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956312546&partnerID=8YFLogxK

U2 - 10.1371/journal.pone.0010086

DO - 10.1371/journal.pone.0010086

M3 - Article

C2 - 20386749

AN - SCOPUS:77956312546

VL - 5

JO - PLoS One

JF - PLoS One

SN - 1932-6203

IS - 4

M1 - e10086

ER -