Abstract
High Gamma and Beta Temporal Interference Stimulation in the Human Motor Cortex Improves Motor Functions
Highlights
The human motor system can quickly react to external stimuli through delicate control of skeletal muscles by the neural activity of the motor cortex [1]
In the random reaction time task (RRTT) experiment, only 70 Hz Temporal interference (TI) stimulation had a promoting effect on the reaction time (RT) performance and excitability of the motor cortex compared to sham stimulation
Stimulation significantly facilitated motor learning in the serial reaction time task (SRTT) experiment, which was significantly positively correlated with the increase in motor evoked potential
Summary
The human motor system can quickly react to external stimuli through delicate control of skeletal muscles by the neural activity of the motor cortex [1]. Performing the same actions in sequential manners allows humans to acquire new motor skills [2]. During these functions, high gamma and beta brain oscillations of the motor cortex play important roles. Beta activities in the motor cortex are considered an important component of motor learning [6,7,8]. Modulating these oscillations may be useful to improve motor skills. Envelope-modulated waveforms with two high-frequency carriers can activate neurons in target brain regions without stimulating the overlying cortex, which has been validated in mouse brains. Whether TI stimulation can work on the human brain has not been elucidate
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