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Age-related Changes In The Brain Functional Connectivity During Motor Initiation

Nikita Frolov, Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, 420500, Innopolis, The Republic of Tatarstan, Russia

Elena Pitsik, Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, 420500, Innopolis, The Republic of Tatarstan, Russia

Alexander Hramov, Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, 420500, Innopolis, The Republic of Tatarstan, Russia

Abstract

The effect of healthy aging on the human motor system performance is well-documented. It causes a decline in reaction time, degraded ability to execute and control complex motor actions, low flexibility in learning new skills. A reduced daily activity old people combined with a cognitive and motor decline, usually result in a developed ambidexterity, i.e., the loss of a dominant limb advances. We suggest that weakening of the neuronal processes associated with a dominant limb control should be observed at the early stage of motor initiation. In this paper we apply functional connectivity analysis to reveal age-related changes in the integrative brain dynamics during the motor initiation before the dominant hand movements. Analyzing the whole-scalp electroencephalography (EEG) signals on the sensor level, we find higher theta-band coupling in the hemisphere ipsilateral to the dominant hand.

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Nikita Frolov
Innopolis University
Russia

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