Dissociated Representations of Deceptive Intentions and Kinematic Adaptations in the Observer’s Motor System

Finisguerra Alessandra, Amoruso Kucia, Urgesi Cosimo, Stergios Makris

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Previous studies showed that observing deceptive actions modulates the activity of the observer's motor system. However, it is unclear whether this modulation reflects the coding of deceptive intentions or the mapping of the kinematic adaptations required to attain deceptive actions. Here, we used single-pulse transcranial magnetic stimulation to measure cortico-spinal excitability (CSE) from hand and forearm muscles while participants predicted the weight of cubes lifted by actors who received truthful information on the object weight and provided 1) truthful (truthful actions) or 2) deceptive (deceptive actions) cues to the observers or 3) who received fooling information and were asked to provide truthful cues (deceived actions). This way, we independently manipulated actor's intentions and kinematic adaptations. We found that, as compared to truthful action observation, CSE increased during observation of deceptive actions, but decreased during observation of deceived actions. Importantly, while the CSE enhancement in response to deceptive intentions lacked muscle specificity, perceiving kinematic alterations in the deceived condition affected CSE only for the hand muscle involved in kinematic adaptations to unexpected object weight. This suggests that actor's intentions and movement kinematics may be coded by the observer's motor system at different hierarchical levels of action representation.
Original languageEnglish
Pages (from-to)1-15
JournalCerebral Cortex
Early online date19 Nov 2016
DOIs
Publication statusE-pub ahead of print - 19 Nov 2016

Fingerprint

Biomechanical Phenomena
Observation
Weights and Measures
Muscles
Cues
Hand
Transcranial Magnetic Stimulation
Forearm
Motor Activity

Cite this

@article{0efa4c8c714b440d907345a08e4c1080,
title = "Dissociated Representations of Deceptive Intentions and Kinematic Adaptations in the Observer’s Motor System",
abstract = "Previous studies showed that observing deceptive actions modulates the activity of the observer's motor system. However, it is unclear whether this modulation reflects the coding of deceptive intentions or the mapping of the kinematic adaptations required to attain deceptive actions. Here, we used single-pulse transcranial magnetic stimulation to measure cortico-spinal excitability (CSE) from hand and forearm muscles while participants predicted the weight of cubes lifted by actors who received truthful information on the object weight and provided 1) truthful (truthful actions) or 2) deceptive (deceptive actions) cues to the observers or 3) who received fooling information and were asked to provide truthful cues (deceived actions). This way, we independently manipulated actor's intentions and kinematic adaptations. We found that, as compared to truthful action observation, CSE increased during observation of deceptive actions, but decreased during observation of deceived actions. Importantly, while the CSE enhancement in response to deceptive intentions lacked muscle specificity, perceiving kinematic alterations in the deceived condition affected CSE only for the hand muscle involved in kinematic adaptations to unexpected object weight. This suggests that actor's intentions and movement kinematics may be coded by the observer's motor system at different hierarchical levels of action representation.",
author = "Finisguerra Alessandra and Amoruso Kucia and Urgesi Cosimo and Stergios Makris",
year = "2016",
month = "11",
day = "19",
doi = "10.1093/cercor/bhw346",
language = "English",
pages = "1--15",
journal = "Cerebral Cortex",
issn = "1047-3211",
publisher = "Oxford University Press",

}

Dissociated Representations of Deceptive Intentions and Kinematic Adaptations in the Observer’s Motor System. / Alessandra, Finisguerra; Kucia, Amoruso; Cosimo, Urgesi; Makris, Stergios.

In: Cerebral Cortex, 19.11.2016, p. 1-15.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Dissociated Representations of Deceptive Intentions and Kinematic Adaptations in the Observer’s Motor System

AU - Alessandra, Finisguerra

AU - Kucia, Amoruso

AU - Cosimo, Urgesi

AU - Makris, Stergios

PY - 2016/11/19

Y1 - 2016/11/19

N2 - Previous studies showed that observing deceptive actions modulates the activity of the observer's motor system. However, it is unclear whether this modulation reflects the coding of deceptive intentions or the mapping of the kinematic adaptations required to attain deceptive actions. Here, we used single-pulse transcranial magnetic stimulation to measure cortico-spinal excitability (CSE) from hand and forearm muscles while participants predicted the weight of cubes lifted by actors who received truthful information on the object weight and provided 1) truthful (truthful actions) or 2) deceptive (deceptive actions) cues to the observers or 3) who received fooling information and were asked to provide truthful cues (deceived actions). This way, we independently manipulated actor's intentions and kinematic adaptations. We found that, as compared to truthful action observation, CSE increased during observation of deceptive actions, but decreased during observation of deceived actions. Importantly, while the CSE enhancement in response to deceptive intentions lacked muscle specificity, perceiving kinematic alterations in the deceived condition affected CSE only for the hand muscle involved in kinematic adaptations to unexpected object weight. This suggests that actor's intentions and movement kinematics may be coded by the observer's motor system at different hierarchical levels of action representation.

AB - Previous studies showed that observing deceptive actions modulates the activity of the observer's motor system. However, it is unclear whether this modulation reflects the coding of deceptive intentions or the mapping of the kinematic adaptations required to attain deceptive actions. Here, we used single-pulse transcranial magnetic stimulation to measure cortico-spinal excitability (CSE) from hand and forearm muscles while participants predicted the weight of cubes lifted by actors who received truthful information on the object weight and provided 1) truthful (truthful actions) or 2) deceptive (deceptive actions) cues to the observers or 3) who received fooling information and were asked to provide truthful cues (deceived actions). This way, we independently manipulated actor's intentions and kinematic adaptations. We found that, as compared to truthful action observation, CSE increased during observation of deceptive actions, but decreased during observation of deceived actions. Importantly, while the CSE enhancement in response to deceptive intentions lacked muscle specificity, perceiving kinematic alterations in the deceived condition affected CSE only for the hand muscle involved in kinematic adaptations to unexpected object weight. This suggests that actor's intentions and movement kinematics may be coded by the observer's motor system at different hierarchical levels of action representation.

U2 - 10.1093/cercor/bhw346

DO - 10.1093/cercor/bhw346

M3 - Article

SP - 1

EP - 15

JO - Cerebral Cortex

JF - Cerebral Cortex

SN - 1047-3211

ER -