Abstract

Of particular interest to the neuroscience and robotics communities is the understanding of how two humans could physically collaborate to perform motor tasks such as holding a tool or moving it across locations. When two humans physically interact with each other, sensory consequences and motor outcomes are not entirely predictable as they also depend on the other agent's actions. The sensory mechanisms involved in physical interactions are not well understood. The present study was designed (1) to quantify human-human physical interactions where one agent ("follower") has to infer the intended or imagined-but not executed-direction of motion of another agent ("leader") and (2) to reveal the underlying strategies used by the dyad. This study also aimed at verifying the extent to which visual feedback (VF) is necessary for communicating intended movement direction. We found that the control of leader on the relationship between force and motion was a critical factor in conveying his/her intended movement direction to the follower regardless of VF of the grasped handle or the arms. Interestingly, the dyad's ability to communicate and infer movement direction with significant accuracy improved (>83%) after a relatively short amount of practice. These results indicate that the relationship between force and motion (interpreting as arm impedance modulation) may represent an important means for communicating intended movement direction between biological agents, as indicated by the modulation of this relationship to intended direction. Ongoing work is investigating the application of the present findings to optimize communication of high-level movement goals during physical interactions between biological and non-biological agents.

Original languageEnglish (US)
JournalFrontiers in Neurorobotics
Volume11
Issue numberAPR
DOIs
StatePublished - Apr 13 2017

Fingerprint

Communication
Modulation
Feedback
Conveying
Robotics

Keywords

  • Human-human interaction
  • Impedance
  • Leader and follower
  • Physical interaction
  • Stiffness

ASJC Scopus subject areas

  • Biomedical Engineering
  • Artificial Intelligence

Cite this

Communication and inference of intended movement direction during human-human physical interaction. / Mojtahedi, Keivan; Whitsell, Bryan; Artemiadis, Panagiotis; Santello, Marco.

In: Frontiers in Neurorobotics, Vol. 11, No. APR, 13.04.2017.

Research output: Contribution to journalArticle

@article{34f545373c9a44c2a16669fafa662b26,
title = "Communication and inference of intended movement direction during human-human physical interaction",
abstract = "Of particular interest to the neuroscience and robotics communities is the understanding of how two humans could physically collaborate to perform motor tasks such as holding a tool or moving it across locations. When two humans physically interact with each other, sensory consequences and motor outcomes are not entirely predictable as they also depend on the other agent's actions. The sensory mechanisms involved in physical interactions are not well understood. The present study was designed (1) to quantify human-human physical interactions where one agent ({"}follower{"}) has to infer the intended or imagined-but not executed-direction of motion of another agent ({"}leader{"}) and (2) to reveal the underlying strategies used by the dyad. This study also aimed at verifying the extent to which visual feedback (VF) is necessary for communicating intended movement direction. We found that the control of leader on the relationship between force and motion was a critical factor in conveying his/her intended movement direction to the follower regardless of VF of the grasped handle or the arms. Interestingly, the dyad's ability to communicate and infer movement direction with significant accuracy improved (>83{\%}) after a relatively short amount of practice. These results indicate that the relationship between force and motion (interpreting as arm impedance modulation) may represent an important means for communicating intended movement direction between biological agents, as indicated by the modulation of this relationship to intended direction. Ongoing work is investigating the application of the present findings to optimize communication of high-level movement goals during physical interactions between biological and non-biological agents.",
keywords = "Human-human interaction, Impedance, Leader and follower, Physical interaction, Stiffness",
author = "Keivan Mojtahedi and Bryan Whitsell and Panagiotis Artemiadis and Marco Santello",
year = "2017",
month = "4",
day = "13",
doi = "10.3389/fnbot.2017.00021",
language = "English (US)",
volume = "11",
journal = "Frontiers in Neurorobotics",
issn = "1662-5218",
publisher = "Frontiers Research Foundation",
number = "APR",

}

TY - JOUR

T1 - Communication and inference of intended movement direction during human-human physical interaction

AU - Mojtahedi, Keivan

AU - Whitsell, Bryan

AU - Artemiadis, Panagiotis

AU - Santello, Marco

PY - 2017/4/13

Y1 - 2017/4/13

N2 - Of particular interest to the neuroscience and robotics communities is the understanding of how two humans could physically collaborate to perform motor tasks such as holding a tool or moving it across locations. When two humans physically interact with each other, sensory consequences and motor outcomes are not entirely predictable as they also depend on the other agent's actions. The sensory mechanisms involved in physical interactions are not well understood. The present study was designed (1) to quantify human-human physical interactions where one agent ("follower") has to infer the intended or imagined-but not executed-direction of motion of another agent ("leader") and (2) to reveal the underlying strategies used by the dyad. This study also aimed at verifying the extent to which visual feedback (VF) is necessary for communicating intended movement direction. We found that the control of leader on the relationship between force and motion was a critical factor in conveying his/her intended movement direction to the follower regardless of VF of the grasped handle or the arms. Interestingly, the dyad's ability to communicate and infer movement direction with significant accuracy improved (>83%) after a relatively short amount of practice. These results indicate that the relationship between force and motion (interpreting as arm impedance modulation) may represent an important means for communicating intended movement direction between biological agents, as indicated by the modulation of this relationship to intended direction. Ongoing work is investigating the application of the present findings to optimize communication of high-level movement goals during physical interactions between biological and non-biological agents.

AB - Of particular interest to the neuroscience and robotics communities is the understanding of how two humans could physically collaborate to perform motor tasks such as holding a tool or moving it across locations. When two humans physically interact with each other, sensory consequences and motor outcomes are not entirely predictable as they also depend on the other agent's actions. The sensory mechanisms involved in physical interactions are not well understood. The present study was designed (1) to quantify human-human physical interactions where one agent ("follower") has to infer the intended or imagined-but not executed-direction of motion of another agent ("leader") and (2) to reveal the underlying strategies used by the dyad. This study also aimed at verifying the extent to which visual feedback (VF) is necessary for communicating intended movement direction. We found that the control of leader on the relationship between force and motion was a critical factor in conveying his/her intended movement direction to the follower regardless of VF of the grasped handle or the arms. Interestingly, the dyad's ability to communicate and infer movement direction with significant accuracy improved (>83%) after a relatively short amount of practice. These results indicate that the relationship between force and motion (interpreting as arm impedance modulation) may represent an important means for communicating intended movement direction between biological agents, as indicated by the modulation of this relationship to intended direction. Ongoing work is investigating the application of the present findings to optimize communication of high-level movement goals during physical interactions between biological and non-biological agents.

KW - Human-human interaction

KW - Impedance

KW - Leader and follower

KW - Physical interaction

KW - Stiffness

UR - http://www.scopus.com/inward/record.url?scp=85018426544&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018426544&partnerID=8YFLogxK

U2 - 10.3389/fnbot.2017.00021

DO - 10.3389/fnbot.2017.00021

M3 - Article

AN - SCOPUS:85018426544

VL - 11

JO - Frontiers in Neurorobotics

JF - Frontiers in Neurorobotics

SN - 1662-5218

IS - APR

ER -