Search results for "EAI"
showing 10 items of 103 documents
More comprehensive proprioceptive stimulation of the hand amplifies its cortical processing
2021
Corticokinematic coherence (CKC) quantifies the phase coupling between limb kinematics and cortical neurophysiological signals reflecting proprioceptive feedback to the primary sensorimotor (SM1) cortex. We studied whether the CKC strength or cortical source location differs between proprioceptive stimulation (i.e., actuator-evoked movements) of right-hand digits (index, middle, ring, and little). Twenty-one volunteers participated in magnetoencephalography measurements during which three conditions were tested: 1) simultaneous stimulation of all four fingers at the same frequency, 2) stimulation of each finger separately at the same frequency, and 3) simultaneous stimulation of the fingers…
Gating Patterns to Proprioceptive Stimulation in Various Cortical Areas : An MEG Study in Children and Adults using Spatial ICA
2020
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 …
Reproducibility of evoked and induced MEG responses to proprioceptive stimulation of the ankle joint
2022
Cortical processing of proprioceptive afference can be investigated by examining phase locked evoked and induced responses in cortical signals to passive movement stimuli. Reproducibility of evoked and induced responses has been studied using electroencephalography (EEG), but proprioceptive domain has received little attention. It is unclear whether evoked and induced responses to proprioceptive stimulation arising from the lower limbs are reproducible using magnetoencephalography (MEG). Nineteen healthy volunteers (18 right-foot dominant, 36.1 ± 6.6 yr, 7 females) were measured in two MEG sessions separated by 9 ± 5 days in which their right ankle was rotated intermittently using a pneumat…
Attention directed to proprioceptive stimulation alters its cortical processing in the primary sensorimotor cortex.
2021
Funding Information: This study has been supported by the Academy of Finland ”Brain changes across the life‐span” profiling funding to University of Jyväskylä (grant #311877). HP was supported by Academy of Finland (grants #296240, #326988, #307250 and #327288) to HP and Jane and Aatos Erkko Foundation (grant #602.274). Publisher Copyright: © 2021 The Authors. European Journal of Neuroscience published by Federation of European Neuroscience Societies and John Wiley & Sons Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved. Movement-evoked fields to passive movements and corticokinematic coherence between limb kinematics and magnetoencephalographic signals can both be used to …
Sourcing practices in online journalism : an ethnographic study of the formation of trust in and the use of journalistic sources
2017
Arguably one of the most important factors of journalistic quality is careful source selection. Studies on online journalism have revealed working conditions which may lead to poor sourcing practices. This article seeks to answer the following questions: What sources do online journalists use, and how do they rationalize their sourcing practices? A total of 17 Finnish online journalists in 7 newsrooms were observed and interviewed over their practices of source searching, evaluation, and use. The study revealed five distinctive rationales of source use, which I call trust discourses: the ideological, the pragmatic, the cynically pragmatic, the consensual, and the contextual trust. Different…
Proprioceptive response strength in the primary sensorimotor cortex is invariant to the range of finger movement
2023
Available online 13 February 2023 Proprioception is the sense of body position and movement that relies on afference from the proprioceptors in muscles and joints. Proprioceptive responses in the primary sensorimotor (SM1) cortex can be elicited by stim- ulating the proprioceptors using evoked (passive) limb movements. In magnetoencephalography (MEG), propri- oceptive processing can be quantified by recording the movement evoked fields (MEFs) and movement-induced beta power modulations or by computing corticokinematic coherence (CKC) between the limb kinematics and cortical activity. We examined whether cortical proprioceptive processing quantified with MEF peak strength, relative beta supp…
Ikkuna yhteiseen kehittämiseen : virtuaalinen työkalu apuna organisaatioiden kehittämisessä : yrittäjämäinen uudistuminen ja muotoiluajattelu organis…
2017
Musiikkiluokkaopiskelun vaikutus koulumenestykseen peruskoulussa
2014
Tutkielma antaa näkökulmia siihen, millä tavalla musiikkiluokalla opiskelu voi vaikuttaa koulumenestykseen ja miksi. Tavoitteeni oli saada selville, mihin kehityksen osa-alueisiin musiikilla voisi olla vaikutusta ja kuinka ne käytännössä ilmenevät koulunkäynnissä. Pääosan tutkielmassani saivat älyllinen-, persoonallinen-, ja sosiaalinen kehitys. Näihin peilaan musiikkiluokkalaisten niin sanottua erityisasemaa koulunkäynnissä. Esittelen myös muita koulumenestykseen vaikuttavia tekijöitä, sillä musiikillisella harrastuneisuudella ei yksinään voi selittää hyvää tai huonoa koulumenestystä. Musiikkiluokalla opiskelun lisäksi tarkastelen tutkielmassani myös musiikin integrointia tavallisilla luok…