Quantification of cortical proprioceptive processing through a wireless and miniaturized EEG amplifier
Giangrande, A., Cerone, G. L., Gazzoni, M., Botter, A., & Piitulainen, H. (2022). Quantification of cortical proprioceptive processing through a wireless and miniaturized EEG amplifier. In EMBC 2022 : 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (pp. 4797-4800). IEEE. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. https://doi.org/10.1109/EMBC48229.2022.9871637
Published inAnnual International Conference of the IEEE Engineering in Medicine and Biology Society
© 2022, IEEE
Corticokinematic coherence (CKC) is computed between limb kinematics and cortical activity (e.g. MEG, EEG), and it can be used to detect, quantify and localize the cortical processing of proprioceptive afference arising from the body. EEG-based studies on CKC have been limited to lab environments due to bulky, non-portable instrumentations. We recently proposed a wireless and miniaturized EEG acquisition system aimed at enabling EEG studies outside the laboratory. The purpose of this work is to compare the EEG-based CKC values obtained with this device with a conventional wired-EEG acquisition system to validate its use in the quantification of cortical proprioceptive processing. Eleven healthy right-handed participants were recruited (six males, four females, age range: 24–40 yr). A pneumatic-movement actuator was used to evoke right index-finger flexion-extension movement at 3 Hz for 4 min. The task was repeated both with the wireless-EEG and wired-EEG devices using the same 30-channel EEG cap preparation. CKC was computed between the EEG and finger acceleration. CKC peaked at the movement frequency and its harmonics, being statistically significant (p < 0.05) in 8–10 out of 11 participants. No statistically significant differences (p < 0.05) were found in CKC strength between wireless-EEG (range 0.03-0.22) and wired-EEG (0.02-0.33) systems, that showed a good agreement between the recording systems (3 Hz: r = 0.57, p = 0.071, 6 Hz: r = 0.82, p = 0.003). As expected, CKC peaked in sensors above the left primary sensorimotor cortex contralateral to the moved right index finger. As the wired-EEG device, the tested wireless-EEG system has proven feasible to quantify CKC, and thus can be used as a tool to study proprioception in the human neocortex. Thanks to its portability, the wireless-EEG used in this study has the potential to enable the examination of cortical proprioception in more naturalistic conditions outside the laboratory environment. Clinical Relevance—Our study will contribute to provide innovative technological foundations for future unobtrusive EEG recordings in naturalistic conditions to examine human sensorimotor system. ...
Parent publication ISBN978-1-7281-2783-5
ConferenceAnnual International Conference of the IEEE Engineering in Medicine & Biology Society
Is part of publicationEMBC 2022 : 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society
Publication in research information system
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- Liikuntatieteiden tiedekunta 
Related funder(s)Academy of Finland
Funding program(s)Research costs of Academy Research Fellow, AoF; Research profiles, AoF
Additional information about fundingThis study was supported by the Academy of Finland (grants #296240 and #327288) to HP, Jane and Aatos Erkko Foundation (602.274) to HP, and “Brain changes across the life-span” profiling funding to Univ. of Jyväskylä (grant #311877).
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