Corticokinematic coherence mainly reflects movement-induced proprioceptive feedback

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Bourguignon, Mathieu Piitulainen, Harri De Tiege, Xavier Jousmaki, Veikko Hari, Riitta 2017-05-11T08:37:18Z 2017-05-11T08:37:18Z 2015
dc.identifier.citation Bourguignon , M , Piitulainen , H , De Tiege , X , Jousmaki , V & Hari , R 2015 , ' Corticokinematic coherence mainly reflects movement-induced proprioceptive feedback ' , NeuroImage , vol. 106 , pp. 382-390 . en
dc.identifier.issn 1053-8119
dc.identifier.issn 1095-9572
dc.identifier.other PURE UUID: 8b4e4f86-c1e9-4bde-992d-58e5119c18f1
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE FILEURL:
dc.description.abstract Corticokinematic coherence (CKC) reflects coupling between magnetoencephalographic (MEG) signals and hand kinematics, mainly occurring at hand movement frequency (F0) and its first harmonic (F1). Since CKC can be obtained for both active and passive movements, it has been suggested to mainly reflect proprioceptive feedback to the primary sensorimotor (SM1) cortex. However, the directionality of the brain–kinematics coupling has not been previously assessed and was thus quantified in the present study by means of renormalized partial directed coherence (rPDC). MEG data were obtained from 15 subjects who performed right index-finger movements and whose finger was, in another session, passively moved, with or without tactile input. Four additional subjects underwent the same task with slowly varying movement pace, spanning the 1–5 Hz frequency range. The coupling between SM1 activity recorded with MEG and finger kinematics was assessed with coherence and rPDC. In all conditions, the afferent rPDC spectrum,which resembled the coherence spectrum, displayed higher values than the efferent rPDC spectrum. The afferent rPDC was 37% higher when tactile input was present, and it was at highest at F1 of the passive conditions; the efferent rPDC level did not differ between conditions. The apparent latency for the afferent input, estimated within the framework of the rPDC analysis, was 50–100 ms. The higher directional coupling between hand kinematics and SM1 activity in afferent than efferent direction strongly supports the view that CKC mainly reflects movement-related somatosensory proprioceptive afferent input to the contralateral SM1 cortex. en
dc.format.extent 382-390
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries NEUROIMAGE en
dc.relation.ispartofseries Volume 106 en
dc.rights openAccess en
dc.title Corticokinematic coherence mainly reflects movement-induced proprioceptive feedback en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Neuroscience and Biomedical Engineering en
dc.subject.keyword Kinematics
dc.subject.keyword Human brain
dc.subject.keyword Magnetoencephalography
dc.subject.keyword Proprioception
dc.subject.keyword Sensorimotor cortex
dc.subject.keyword Partial directed coherence
dc.subject.keyword Movement
dc.identifier.urn URN:NBN:fi:aalto-201705114064
dc.identifier.doi 10.1016/j.neuroimage.2014.11.026
dc.type.version publishedVersion

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