Fig 2 - uploaded by Ekaterina Karimova
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Relative changes in gamma activity when performing various tasks (static image observation, observation, imagination, and execution of the biological movements, and non-biological motion observation) in the left and right hemispheres in the temporal (blue circles) and frontal (red triangles) lobes. The baseline values are zero.
Source publication
The mirror neuron system (MNS) is a key component in the neurophysiological mechanisms of social behavior. At the same time, the properties of the mirror neurons are very difficult to study using indirect methods such as fMRI and EEG. Also, invasive registration of neural activity in people is possible only in the case of serious medical interventi...
Contexts in source publication
Context 1
... when performing tasks in comparison with the baseline (see Fig. 1). The repeated measures ANOVA taking into account the "hemisphere" and "lobe" factors revealed a significant influence of factors combination R1 * "hemisphere"* "lobe", current effect F(4, 1400) = 30.43, p = 0.000. Changes in the gamma rhythm in each of the tasks are shown in Fig. 2 for the frontal and temporal electrodes in the left and right hemispheres (the value in the baseline corresponds to zero on the ...
Context 2
... of movement (3), and repeated task (R1 -observation, imagination, execution). The following Table 1 gives the indicators of the ANOVA and p-values for significant effects. One can also see differences in gamma changes during observation, imagination, and execution of three types of hand movement: hand clenching, clapping, and cup grasping (see Fig. 2). There were significant increases in gamma activity in left frontal electrodes during imagination and execution for all movements and during observation of the clapping and cup grasping only. In the right temporal lobe there were significant gamma increases during imagination and execution of the same movements (clapping and cup ...
Citations
In experiments on observing and performing social gestures, the level of mu rhythm suppression is associated with the activity of the mirror neuron system (MNS), which is responsible for the perception and understanding of nonverbal signals in social communication. In turn, while MNS activity may be associated primarily with empathy, it is also associated with other psychological and demographic factors affecting the effectiveness of cortical neural networks.In this study, we verified the influence of empathy, state and trait anxiety levels, presence and number of children, age, and menstrual cycle phase on the mu-suppression level in 40 women. We used 32-channel EEG recorded during observation, and synchronous execution of various hand movements. The ICA infomax method was used for decomposing and selecting the left hemisphere component of the mu-rhythm.Mu-suppression was higher in women with one child, with higher levels of empathy, and with lower anxiety levels. It is possible that MNS activity is stronger in women during parental care.
