Evoked potentials in final epoch of self-initiated hand movement: A study in patients with depth electrodes

Investor logo

Warning

This publication doesn't include Faculty of Education. It includes Central European Institute of Technology. Official publication website can be found on muni.cz.
Authors

KUKLETA Miloslav DAMBORSKÁ Alena TURAK Baris LOUVEL Jacques

Year of publication 2017
Type Article in Periodical
Magazine / Source International Journal of Psychophysiology
MU Faculty or unit

Central European Institute of Technology

Citation
Doi http://dx.doi.org/10.1016/j.ijpsycho.2017.05.004
Field Neurology, neurosurgery, neurosciences
Keywords Intracerebral EEG recordings; Evoked potentials; Voluntary movement; Motor intention; Motor action
Description Comparison between the intended and performed motor action can be expected to occur in the final epoch of a voluntary movement. In search for electrophysiological correlates of this mental process the purpose of the current study was to identify intracerebral sites activated in final epoch of self-paced voluntary movement. Intracerebral EEG was recorded from 235 brain regions of 42 epileptic patients who performed self-paced voluntary movement task. Evoked potentials starting at 0 to 243 ms after the peak of averaged, rectified electromyogram were identified in 21 regions of 13 subjects. The mean amplitude value of these late movement potentials (LMP) was 56.4 +/- 27.5 V. LMPs were observed in remote regions of mesiotemporal structures, cingulate, frontal, temporal, parietal, and occipital cortices. Closely before the LMP onset, a significant increase of phase synchronization was observed in all EEG record pairs in 9 of 10 examined subjects; p < 0.001, Mann Whitney U test. In conclusion, mesiotemporal structures, cingulate, frontal, temporal, parietal, and occipital cortices seem to represent integral functionally linked parts of network activated in final epoch of self-paced voluntary movement. Activation of this large-scale neuronal network was suggested to reflect a comparison process between the intended and actually performed motor action. Our results contribute to better understanding of neural mechanisms underlying goal-directed behavior crucial for creation of agentive experience.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.