Sound Therapy May Balance Brain Signals to Reduce Blood Pressure & Migraines
A noninvasive neurotechnology that uses sound to balance right- and left-side brain frequencies was associated with lowered blood pressure, improved heart rate variability, and reduced symptoms of migraine headaches, according to two small studies presented in September 2016 at the American Heart Association’s Council on Hypertension Scientific Sessions in Orlando.
A release from the association explains that the neurotechnology, developed at Brain State Technologies in Scottsdale, Arizona, is called High-resolution, relational, resonance based, electroencephalic mirroring, or HIRREM. Sensors placed on the scalp measure brain electrical activity, and detect right/left imbalances, or hyperarousal, according to study author Hossam A. Shaltout, R.Ph., Ph.D., assistant professor in the Hypertension and Vascular Research Center at Wake Forest School of Medicine in Winston-Salem, North Carolina.
The release quotes Shaltout as saying, “Most people have relatively balanced electrical activity between the right side and left sides of the brain. Imbalance, with one side dominant, or more active, may reflect autonomic dysregulation associated with the effects of chronic stress, which is thought to play a role in high blood pressure, migraines, insomnia, depression, hot flashes and more.”
In real time, HIRREM monitors brain electrical activity and translates dominant brain frequencies into computer-generated audible tones that are reflected back simultaneously via ear buds.
“Gradually, and on its own, with no conscious, cognitive activity required, the electrical pattern tends to shift towards improved balance and reduced hyperarousal,” Shaltout said.
In one study, researchers looked at HIRREM’s impact on ten men and women with stage one hypertension at the start of the study. After an average of 17.7 HIRREM sessions received over 10.2 in-office days, hypertensive patients showed an average reduction in their systolic blood pressure, from 152 to 136 millimeters of mercury (mm Hg), and a reduction in their diastolic pressure from 97 to 81 mmHg.
Insomnia severity improved in the small study group, and anxiety seemed to improve. The researchers also found that heart rate variability increased from an average 42 to 57 milliseconds, which is a good thing, Shaltout said. Heart rate variability refers to variations in the interval between heartbeats.
“The more flexibility and dynamic range the body has to be able to change the heart rate in response to the blood pressure, the better,” Shaltout said.
In another study, the researchers examined the effect of HIRREM on 52 adults who had reported they suffered from migraines. The patients studied received 15.9 sessions over nine in-office days. Comparing the data they collected before the therapy to two weeks after, researchers found patients reported improvements for insomnia, mood, and headaches.