2020 / 02

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DOI: 10.24075/brsmu.2020.019

ORIGINAL RESEARCH

EEG μ-rhythm reactivity in children during imitation of biological and non-biological motion

Kaida AI, Mikhailova AA, Eismont EV, Dzhapparova LL, Pavlenko VB
About authors

V.I. Vernadsky Crimean Federal University, Simferopol, Russia

Correspondence should be addressed: Anna I. Kaida
Angarskaya, 38, Simferopol, 295001; moc.liamg@annaadyak

About paper

Funding: the study was performed as a part of the project “Development of a complex of exoskeleton, hands and procedures for the rehabilitation of children with cerebral palsy” supported by the Ministry of Science and Higher Education of Russian Federation (RFMEFI60519X0186).

Compliance with ethical standards: the study was approved by the Ethics Committee of V.I. Vernadsky Crimean Federal University (protocol № 12 dated June 14, 2016). Informed consent to participation in the study was obtained from the parents.

Author contribution: Kaida AI — data acquisition and analysis, manuscript writing; Mikhailova AA — data analysis, manuscript writing; Eismont EV — research planning, data acquisition and analysis, manuscript writing; Dzhapparova LL — data acquisition, manuscript writing; Pavlenko VB — research planning, data analysis, manuscript writing.

Received: 2020-04-01 Accepted: 2020-04-15 Published online: 2020-04-16
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Fig. 1. Task queue. А. Concentric colored circle moving on the monitor screen using the computer mouse (Mn.1). B. Imitation of other colored circle’s movement (ImNB). C. Children move the computer mouse in circle on their own (Mn.2). D. Children imitate the researcher’s movements (ImB)
Fig. 2. EEG μ-rhythm amplitude (А, Ln μV) in children aged 4–6 during imitation of non-biological (А) and biological (B) motion. 1 — baseline, 2 — autonomous movements’ execution at arbitrary speed, 3 — motion imitation. Amplitude differences between baseline and autonomous movements’ execution: * — p < 0.05; ** — p ≤ 0.01; *** — p ≤ 0.001; when executing autonomous movements and imitating: ▲ — p < 0.05
Fig. 3. EEG μ-rhythm amplitude (А, Ln μV) in the group of children aged 7–9 during imitation of non-biological (А) and biological (B) motion. The remaining notation is the same as in Fig. 2
Fig. 4. EEG μ-rhythm amplitude (А, Ln μV) in the group of children aged 10–12 during imitation of non-biological (А) and biological (B) motion. The remaining notation is the same as in Fig. 2
Fig. 5. EEG μ-rhythm amplitude (А, Ln μV) in the group of children aged 13–15 during imitation of non-biological (А) and biological (B) motion. Amplitude differences when executing autonomous movements and imitating: ▲▲ — р ≤ 0.01; ▲▲▲ — р ≤ 0.001. The remaining notation is the same as in Fig. 2
Table 1. Reactivity indices mean values (together with standard error of the mean) obtained during imitation of non-biological motion
Note: positive reactivity index values correspond to sensorimotor rhythm synchronization, negative values correspond to desynchronization.
Table 2. Reactivity indices mean values (together with standard error of the mean) obtained during imitation of biological motion