JUL 20, 2022 1:30 PM PDT

What Does the Sleeping Brain Do When It Hears Music?

WRITTEN BY: Kerry Charron

A study published in Nature Neuroscience highlights brain activity that happens when a sleeping person hears music. A team of UCLA researchers examined brain activity in the cerebral cortex of epilepsy patients. They discovered a significant response to sound during sleep that resembles the brain’s response during wakefulness.

The researchers observed a key difference in the level of alpha-beta waves between a sleeping state and one of wakefulness. Neural feedback from higher brain centers provides insight into understanding the impact of sound and anticipating what may come next. Study co-author and director of UCLA’s Epilepsy Surgery Program Dr. Itzhak Fried explained the sleeping brain’s neural activity. He stated that, “the neuronal orchestra is never shut from the environment when the person is deep asleep. The neurons are like musicians playing Mozart, each one with great fidelity and volume. Only the conductor, the one who monitors performance and leads expectations, is missing.” The study noted significant activity in the primary auditory cortex during sleep, but there was less neural feedback from higher brain regions responsible for regulating attention and expectation.  

Patients with severe epilepsy had electrodes implanted in their brains to locate where seizures were occurring. Patients at UCLA and Tel Aviv Sourasky Medical Center were included in the study, and they were set up with bedside speakers that played words and music when the patients were awake and listening as well as when they were asleep. The team collected data from over 700 neurons during wakefulness and different stages of sleeping over a 7-year time period. This methodology allowed them to compare neuronal activity and brain waves. 

Music involves every area of the brain. Music affects the brain in positive ways. Studies of children studying an instrument have demonstrated that musical learning changes brain structure. The visual cortex is engaged when reading musical sheets. Benefits such as improved cognitive skills, decision-making and social behavior are associated with specific changes in brain structures. 

The findings from this study provide insights into auditory information processing by people in unconscious states. The findings have implications for developing effective treatments for comatose patients or those under anesthesia. 


Source: Nature Neuroscience

 

About the Author
BA and MA in English, MPS in Human Relations, and Ed.D. in Higher Education Administration
Kerry Charron writes about medical cannabis research. She has experience working in a Florida cultivation center and has participated in advocacy efforts for medical cannabis.
You May Also Like
AUG 11, 2022
Neuroscience
A Pathway That Links a Gut Microbe & Alzheimer's Disease
AUG 11, 2022
A Pathway That Links a Gut Microbe & Alzheimer's Disease
The gut microbiome is closely connected to human health and well being in many ways. While many microbes in the gut perf ...
AUG 16, 2022
Neuroscience
A Common Denominator Among All Forms of ALS is Revealed
AUG 16, 2022
A Common Denominator Among All Forms of ALS is Revealed
ALS (amyotrophic lateral sclerosis) is a motor neuron disease, which gradually causes a loss of movement. Eventually, pa ...
AUG 30, 2022
Neuroscience
One Alcoholic Drink Can Change the Brain
AUG 30, 2022
One Alcoholic Drink Can Change the Brain
The old adage says that most things are safe in moderation. But new research has shown that just one alcoholic drink can ...
SEP 05, 2022
Clinical & Molecular DX
Physical Activity May Improve Mental Function in Parkinson's Patients
SEP 05, 2022
Physical Activity May Improve Mental Function in Parkinson's Patients
Parkinson’s disease is a brain disorder that results from the impairment of nerve cells in an area of the brain ca ...
SEP 13, 2022
Clinical & Molecular DX
Stress During Pregnancy Linked to Negative Emotions in Infants
SEP 13, 2022
Stress During Pregnancy Linked to Negative Emotions in Infants
Stress during pregnancy can have long lasting effects and can impact emotional and physical development in children. Pas ...
SEP 30, 2022
Health & Medicine
Glyphosate, Now Found in Humans, Can Cause Convulsions in Animals
SEP 30, 2022
Glyphosate, Now Found in Humans, Can Cause Convulsions in Animals
Glyphosate is the chemical in a product called Roundup that kills weeds, especially grasses and broadleaf weeds that com ...
Loading Comments...