Dissociated representations of deceptive intentions and kinematic adaptations in the observer’s motor system
| Autor: | Alessandra Finisguerra, Stergios Makris, Lucia Amoruso, Cosimo Urgesi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Deception Cognitive Neuroscience medicine.medical_treatment media_common.quotation_subject education Motion Perception Pyramidal Tracts Kinematics Motor Activity action observation 050105 experimental psychology Young Adult 03 medical and health sciences Cellular and Molecular Neuroscience 0302 clinical medicine motor cortex Motor system transcranial magnetic stimulation medicine Humans 0501 psychology and cognitive sciences Motion perception action prediction Muscle Skeletal action observation action prediction deceptive intention motor cortex transcranial magnetic stimulation media_common Electromyography Social perception 05 social sciences Observer (special relativity) Anticipation Psychological Evoked Potentials Motor Hand Adaptation Physiological Biomechanical Phenomena Transcranial magnetic stimulation Forearm Social Perception deceptive intention Female Psychology Social psychology 030217 neurology & neurosurgery Coding (social sciences) Cognitive psychology |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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