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RESEARCH PRODUCT
Cerebral Dynamics during the Observation of Point-Light Displays Depicting Postural Adjustments
Thierry PozzoGhislain SaunierDaniel FraimanDaniel FraimanEduardo F. MartinsClaudia D. VargasThiago Lemossubject
Ciencias Físicasbiological motion perceptionElectroencephalographyaction observationneural mechanismsevent-related potentials//purl.org/becyt/ford/1 [https]Behavioral Neuroscience0302 clinical medicinebrain activitySUPERIOR TEMPORAL SULCUSPostural Balancevisual-perceptionbody swayPOINT-LIGHT DISPLAYOriginal Researchmedicine.diagnostic_testsemantic integration05 social sciencesCognitionSuperior temporal sulcusPsychiatry and Mental healthNeuropsychology and Physiological PsychologyACTION OBSERVATIONNeurologyBALANCEQUIETELECTROENCEPHALOGRAPHY[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]recognitionPsychologysuperior temporal sulcusCIENCIAS NATURALES Y EXACTASelectroencephalographymedicine.medical_specialtyOtras Ciencias Físicas050105 experimental psychologylcsh:RC321-57103 medical and health sciencesPhysical medicine and rehabilitationmotor imagerymedicine0501 psychology and cognitive scienceslcsh:Neurosciences. Biological psychiatry. NeuropsychiatryBiological PsychiatryBalance (ability)Communicationbusiness.industrybalance//purl.org/becyt/ford/1.3 [https]point-light display[ SDV.NEU ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]business030217 neurology & neurosurgeryNeuroscienceBiological motionCoding (social sciences)real-world eventsdescription
Objective: As highly social creatures, human beings rely part of their skills of identifying, interpreting, and predicting the actions of others on the ability of perceiving biological motion. In the present study, we aim to investigate the electroencephalographic (EEG) cerebral dynamics involved in the coding of postural control and examine whether upright stance would be codified through the activation of the temporal-parietal cortical network classically enrolled in the coding of biological motion. Design: We registered the EEG activity of 12 volunteers while they passively watched point light displays (PLD) depicting quiet stable (QB) and an unstable (UB) postural situations and their respective scrambled controls (QS and US). In a pretest, 13 volunteers evaluated the level of stability of our two biological stimuli through a stability scale. Results: Contrasting QB vs. QS revealed a typical ERP difference in the right temporal-parietal region at an early 200–300 ms time window. Furthermore, when contrasting the two biological postural conditions, UBvs. QB, we found a higher positivity in the 400–600 ms time window for the UB condition in central-parietal electrodes, lateralized to the right hemisphere. Conclusions: These results suggest that PLDs depicting postural adjustments are coded in the brain as biological motion, and that their viewing recruit similar networks with those engaged in postural stability control. Additionally, higher order cognitive processes appear to be engaged in the identification of the postural instability level. Disentangling the EEG dynamics during the observation of postural adjustments could be very useful for further understanding the neural mechanisms underlying postural control. Fil: Martins, Eduardo F.. Universidade Federal Do Rio de Janeiro. Instituto de Biología; Brasil Fil: Lemos, Thiago. Universidade Federal Do Rio de Janeiro. Instituto de Biología; Brasil Fil: Saunier, Ghislain. Universidade Federal do Pará; Brasil Fil: Pozzo, Thierry. Universite de Bourgogne; Francia Fil: Fraiman Borrazás, Daniel Edmundo. Universidad de San Andrés. Departamento de Matemáticas y Ciencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Vargas, Claudia D.. Universidade Federal Do Rio de Janeiro. Instituto de Biología; Brasil
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-05-08 |