Gating Patterns to Proprioceptive Stimulation in Various Cortical Areas : An MEG Study in Children and Adults using Spatial ICA
Vallinoja, J., Jaatela, J., Nurmi, T., & Piitulainen, H. (2021). Gating Patterns to Proprioceptive Stimulation in Various Cortical Areas : An MEG Study in Children and Adults using Spatial ICA. Cerebral Cortex, 31(3), 1523-1537. https://doi.org/10.1093/cercor/bhaa306
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Cerebral CortexDate
2021Copyright
© The Author(s) 2020. Published by Oxford University Press
Proprioceptive paired-stimulus paradigm was used for 30 children (10-17 years) and 21 adult (25-45 years) volunteers in magnetoencephalography (MEG). Their right index finger was moved twice with 500-ms interval every 4 ± 25 s (repeated 100 times) using a pneumatic-movement actuator. Spatial-independent component analysis (ICA) was applied to identify stimulus-related components from MEG cortical responses. Clustering was used to identify spatiotemporally consistent components across subjects. We found a consistent primary response in the primary somatosensory (SI) cortex with similar gating ratios of 0.72 and 0.69 for the children and adults, respectively. Secondary responses with similar transient gating behavior were centered bilaterally in proximity of the lateral sulcus. Delayed and prolonged responses with strong gating were found in the frontal and parietal cortices possibly corresponding to larger processing network of somatosensory afference. No significant correlation between age and gating ratio was found. We confirmed that cortical gating to proprioceptive stimuli is comparable to other somatosensory and auditory domains, and between children and adults. Gating occurred broadly beyond SI cortex. Spatial ICA revealed several consistent response patterns in various cortical regions which would have been challenging to detect with more commonly applied equivalent current dipole or distributed source estimates.
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Oxford University PressISSN Search the Publication Forum
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https://converis.jyu.fi/converis/portal/detail/Publication/46995788
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- Liikuntatieteiden tiedekunta [2095]
Related funder(s)
Academy of FinlandFunding program(s)
Research post as Academy Research Fellow, AoF; Research costs of Academy Research Fellow, AoF
Additional information about funding
Academy of Finland (grants nos 296240, 307250, 304294, 326988, 327288); Jane and Aatos Erkko Foundation to H.P.License
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