Researchers track auditory perception across brain regions

[usedmavin]

Researchers track auditory perception across brain regions

Researchers track auditory perception across brain regions

Sounds you consciously perceive affect your brain differently than sounds you don’t, a recent Yale study found.

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By Yale University

Mar 12, 2025 07:32 AM

2 min. read

View original

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Sequence of neural mechanisms proposed to produce conscious awareness of an external auditory stimulus. Credit: NeuroImage (2025). DOI: 10.1016/j.neuroimage.2025.121041

Sounds you consciously perceive affect your brain differently than sounds you don’t, a recent Yale study found.

For the study, researchers played participants a series of tones—ranging in intensity from undetectable to fully audible—over a white noise background. Since the participants were also patients undergoing seizure monitoring, and therefore had electrodes implanted on the surface of the brain, this allowed the researchers to record detailed brain activity while the participants listened to the tones.

“We found that when sounds were consciously perceived, there was a wave of activity that flowed through widespread areas of the brain,” said Hal Blumenfeld, the Mark Loughridge and Michele Williams Professor of Neurology at Yale School of Medicine and senior author of the study, which was published in NeuroImage.

“But when the same sounds were not consciously perceived, brain activity was limited to a small region around the auditory cortex.”

The activity was similar to what has been observed with visual perception, suggesting there are shared neural mechanisms between the two systems. The findings advance researchers’ understanding of what happens in the brain during sensory perception and shed light on the neurological underpinnings of human consciousness.

More information: Kate L. Christison-Lagay et al, The neural activity of auditory conscious perception, NeuroImage (2025). DOI: 10.1016/j.neuroimage.2025.121041

Citation: Researchers track auditory perception across brain regions (2025, March 12) retrieved 12 March 2025 from Researchers track auditory perception across brain regions

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[IGZO]

Interesting… but what exactly is meant by “Consciously Perceived”? How is that measured or defined. I am having difficulty locking in clearly what that means?

Also - wondering how subliminal messaging fits into this… be it, visual or auditory …
And if some persons due to what might be considered a “handicap” could actually be less susceptible to subliminal influences.

[1Bluejay]

@usedmavin

For the study, researchers played participants a series of tones—ranging in intensity from undetectable to fully audible—over a white noise background. Since the participants were also patients undergoing seizure monitoring, and therefore had electrodes implanted on the surface of the brain, this allowed the researchers to record detailed brain activity while the participants listened to the tones.

That is a pretty narrow cohort, where the participants were already wired up to monitor their seizure activity. I wonder how many of these folks were deaf as a cinderblock like me?

I suppose with my aids in, my brain would also show some activity, but hearing over white noise + my 24x7 tinnitus would be the challenge. But without my aids, the brain waves would be nil, and I’d be wheeled out on a guerney before I could say, “Hey, I’m STILL ALIVE!”