Burn in and peer reviewed brain research


Not to broach a religious topic, but I know burn in discussions happen all the time in audio circles. Until today, I had not found any scientific research from the brain side.

This article was interesting:  https://pmc.ncbi.nlm.nih.gov/articles/PMC10898501/

It is a 2024 review in Cureus (Kalchev, PMC10898501) that surveyed the physiological, psychological, and social dimensions of audio burn-in. It found no substantial evidence for mechanical changes producing audible differences, and instead identified several well-documented mechanisms — ear fatigue, confirmation bias, placebo effects, and neural acclimatization — that adequately explain perceived changes without requiring the equipment to have changed at all. 

Has anyone found other literature of this type – physiological, psychoacoustic, rather than engineering/mechanical? I'd be curious to learn about it.

Of course, anyone who wants to put their hand on a bible and swear that burn in is real based on personal experience is welcome to do so, but I'm hoping to find things beyond the anecdotal.

hilde45

Has anyone found other literature of this type 
if AI can’t find it how are we supposed to?

as far as burn in is concerned, I look at as there has never been any experience in my life whether it be on the quantum level, or the macro, has the first experience been anywhere near as close to the hundredth. 

I assumed @hilde45 was talking about gear with no moving parts because speakers absolutely have a break in /burn in period. All of my system was brand new from day one and the massive change in sound over a 4 month or so period I attributed to the speakers breaking in. Although some of the change could of come from burn in on everything else 

Has anyone found other literature of this type 
if AI can’t find it how are we supposed to?

eyes, ears, brain

I assumed @hilde45 was talking about gear with no moving parts because speakers absolutely have a break in /burn in 

Yes I qualified the issue in the thread above

 

 

 

Very interesting discussion that actually stayed on the rails very well. Seems to me that what it boils down to is that for most of us perception is reality. If we believe it is real, then to us it is.

@jmalen123

"Perception is reality" ends arguments politely, but it glosses over something crucial: the difference between (1) a perceptual experience being genuine—something actually occurred in your auditory system, the sensation is not imagined—and (2) that experience tracking an external cause—the sensation being reliably produced by the thing you believe produced it. A real experience doesn’t automatically mean a real change in the component.


Three distinct claims often get bundled together in burn-in discussions:

What’s audible. Human hearing has roughly 0.5–1 dB resolution in its most sensitive range. Any change below that threshold is inaudible by definition. "It measures differently" doesn’t entail "it sounds different."


Objective vs. psychological change. Components do change physically — drivers loosen, solder stabilizes. The real question: are those changes (a) within audible range and (b) what you’re actually responding to? Alternative explanations are strong: listener familiarity, reduced novelty-driven attention, expectation effects, neural gain adjustment. These produce genuine perceptual change without the component changing at all.

Controls needed to distinguish them. Blind/double-blind presentation, level matching to 0.1 dB, same-session comparisons (auditory memory decays after ~30 seconds), and pre-registered descriptions of what you expect to hear. None requires a lab.

The point isn’t to dismiss subjective experience—it’s to ask whether it’s evidence of something repeatable and for details of the causal chain producing it.