Influence of coil orientation on corticospinal excitability of trunk muscles during postural and volitional tasks in healthy adults

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dc.contributor.authorMa, Wesley
dc.contributor.authorNemdharry, Sheanil
dc.contributor.authorElgueta Cancino, Edith
dc.contributor.authorChiou, Shin-Yi
dc.date.accessioned2023-07-13T22:14:44Z
dc.date.available2023-07-13T22:14:44Z
dc.date.issued2023-02
dc.descriptionIndexación: Scopuses
dc.description.abstractIntroduction: Trunk muscles play a role in maintaining postural stability and performing goal-directed voluntary movements in activities of daily living. Evidence has shown that the primary motor cortex (M1) is involved in modulation of postural control and voluntary movements of the trunk. However, it remains unknown whether the neural circuits within the M1 were recruited to the same extent between a postural task and a goal-directed voluntary task. Methods: To address this, we examined latencies and amplitudes of motor evoked potentials (MEPs) of the erector spinae (ES) with transcranial magnetic stimulation (TMS) figure-of-eight coil oriented to induce latero-medial (LM), posterior-anterior (PA), and anterior-posterior (AP) currents in the M1 in twenty healthy participants during a dynamic shoulder flexion (DSF) task, a postural task requiring anticipatory postural adjustments (APAs), and during a static trunk extension (STE) task, a voluntary task without involvement of APAs. Results: We found that differences in the AP-LM latency of ES MEP were longer compared with the PA-LM latency in both tasks. Corticospinal excitability was overall greater during the DSF task than during the STE task irrespective of the coil orientation. Discussion: Our findings suggest that while the same neural circuits in the M1 were recruited to modulate both postural and voluntary control of the trunk, the contribution was greater to the postural task than the voluntary task, possibly due to the requirement of APAs in the task. Copyright © 2023 Ma, Nemdharry, Elgueta Cancino and Chiou.es
dc.description.urihttps://www.frontiersin.org/articles/10.3389/fnhum.2023.1108169/full
dc.identifier.citationFrontiers in Human Neuroscience Volume 171 February 2023 Article number 1108169es
dc.identifier.doi10.3389/fnhum.2023.1108169
dc.identifier.issn1662-5161
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/51663
dc.language.isoenes
dc.publisherFrontiers Media S.A.es
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectAnticipatory postural adjustmentses
dc.subjectElectromyographyes
dc.subjectErector spinaees
dc.subjectMotor evoked potentialses
dc.subjectStatic contractionses
dc.subjectTranscranial magnetic stimulationes
dc.titleInfluence of coil orientation on corticospinal excitability of trunk muscles during postural and volitional tasks in healthy adultses
dc.typeArtículoes
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