Transcranial alternating current stimulation (+2 to -2mA) of the dorsolateral prefrontal cortex caused cyclic modulation of MSNA and a significant increase in blood pressure in 22 individuals.
Does transcranial alternating current stimulation of the dorsolateral prefrontal cortex modulate muscle sympathetic nerve activity and blood pressure in awake humans?
Transcranial alternating current stimulation of the dorsolateral prefrontal cortex in awake humans causes partial entrainment of MSNA, heart rate, and blood pressure, highlighting its role in cardiovascular control.
Abstract Introduction Muscle sympathetic nerve activity (MSNA) controls the diameter of arterioles in skeletalmuscle, contributing importantly to the beat-to-beat regulation of blood pressure (BP). Although brain imaging studies have shown that bursts of MSNA originate in the rostral ventrolateral medulla, other subcortical and cortical structures—including the dorsolateral prefrontal cortex (dlPFC)—contribute. Hypothesis We tested the hypothesis that MSNA and BP could be modulated by stimulating the dlPFC. Method dlPFC. In 22 individuals MSNA was recorded via microelectrodes inserted into the common peroneal nerve, together with continuous BP, electrocardiographic, and respiration.Stimulation of the right (n=22) or left dlPFC (n=10) was achieved using transcranial alternating current (tcACS; +2 to −2mA, 0.08 Hz,100 cycles), applied between the nasion and electrodes over the F3 or F4 EEG sites on the scalp. Results Sinusoidal stimulation of either dlPFC caused cyclicmodulation of MSNA, BP and heart rate, and a significant increase in BP. Conclusion We have shown, for the first time, that tcACS of the dlPFC in awake humans causes partial entrainment of MSNA, heart rate and BP, arguing for an important role of this higher-level cortical area in the control of cardiovascular function.
Sesa‐Ashton et al. (Fri,) reported a other. Transcranial alternating current stimulation (tcACS) of the dorsolateral prefrontal cortex was evaluated on Modulation of muscle sympathetic nerve activity, blood pressure, and heart rate. Transcranial alternating current stimulation (+2 to -2mA) of the dorsolateral prefrontal cortex caused cyclic modulation of MSNA and a significant increase in blood pressure in 22 individuals.