Remix.run Logo
Scientific study reveals TikTok videos deactivate key cognitive brain regions(rathbiotaclan.com)
78 points by Akasci an hour ago | 22 comments
whatever1 a minute ago | parent | next [-]

I get the TikTok addiction, but before that it was fb, before that was the tv, before that the newspaper/magazines, before that the books, before that table games etc

I don’t know it seems that regardless of the technology the brain needs dozing off from reality.

huijzer 7 minutes ago | parent | prev | next [-]

Yesterday someone showed a TikTok video where a friend of him was interviewed on the street. The question was, “What is your best fighting stance?”

I found it surprising how little depth the video had

t-writescode 18 minutes ago | parent | prev | next [-]

I haven’t read the study, but I’ve read the comments so far.

I wonder if this mechanism is the same mechanism that impacts, say, swipe-focused dating websites, as well? And Twitter feeds with super-short messages. A lot of the most viral modern tech has been bite-sized content feeds of various types.

CGMthrowaway 5 minutes ago | parent | next [-]

They are all reward hacking, but tiktok is audiovisual immersion, dating apps are romantic validation and twitter is outrage/information foraging

DeluluDon 7 minutes ago | parent | prev | next [-]

It's about the same amount of time that attention is given to any focus, most of those are less than a SFV length.

It really makes sense now. Emotional dysregulation comes into play and now I wonder that it's not just me who is quietly angry (at Match Group) all the time while still addicted to swipe based dating apps.

aw00gah 3 minutes ago | parent | prev [-]

Leetcode became popular along the same time line.

Coincides with GenZ aging into adulthood after being educated in the debunked "3-cueing" or "whole language" reading education model. So far 40 states have pivoted away from it as states that switched first saw reading comprehension improve.

Whole lot of social experimentation without informed consent being put on people by 50+ year olds who run the world and never had to jump through the same thought policing.

Psychiatrist argues Americans have lost their grit for irrational reality we are forced to live in and actually are snowflakes: https://www.theatlantic.com/podcasts/archive/2024/02/how-we-...

t-writescode a minute ago | parent [-]

Eeeh, Leetcode is older. I’m a millenial and it was popular when I was going through - 10ish years earlier.

sghiassy 4 minutes ago | parent | prev | next [-]

That’s a bad thing right?

Less brain, no thinking. Me thinks

woodpanel 7 minutes ago | parent | prev | next [-]

Worthwhile to note that “TikTok” here just means the format, not the platform. YouTube has its “shorts”, Facebook, insta, X, et all engage heavily in milking your doom scrolled eyeballs for time and profit.

MBCook 16 minutes ago | parent | prev | next [-]

Blipverts you say.

consumer451 5 minutes ago | parent [-]

I never made that connection, and I am old enough to have seen Max Headroom when it came out. Thank you.

I would like to re-state my belief that we are all easily programmed meat machines. Accepting this fact is important.

https://en.wikipedia.org/wiki/Blipvert

f1shy 3 minutes ago | parent [-]

Now that is what I call a series ahead of its time! Also saw it as it came out, had totally forgotten about that word.

EA-3167 11 minutes ago | parent | prev | next [-]

The brain is incredibly energy hungry so it evolved to detect situations that don’t require full attention and activates the Default Mode Network. This happens when you’re zoning out to pretty much anything, and indicates that you’re essentially in “low power mode”.

My question here is whether the framing of the content in question “shutting off brain regions” is an honest one compared to what I said above. fMRI is amazing to be sure, but what it tells us is limited.

So without endorsing crap content on any way, I’m very skeptical of this article’s conclusions based on the study in question.

mapkkk a minute ago | parent | next [-]

I would postulate that it's even worse than this, given that default mode network activity is proven to be essential for a healthy mind. This is when engage in useful thinking even when we're not "doing anything".

I think screen activity/tiktok keeps us in some kind of purgatory where we can neither fully engage nor fully disengage.

im3w1l 3 minutes ago | parent | prev | next [-]

This framing seems like the correct one, but I think that just like being physically sedentary leads to weakness of muscles and joints and health problems, so being mentally sedentary could also lead to a mind that is weakened in the long term, though the weakness could likely be reversed with exposure to exercise.

thin_carapace 2 minutes ago | parent | prev [-]

the article does note:

"The researchers caution against reading the deactivation as evidence of impaired cognitive function. As they put it in the paper, “this deactivation should not be interpreted as a failure of cognitive control capacity.” Instead, the team argues the pattern likely reflects an adaptive shift toward low-effort, automatic processing during passive, low-conflict viewing."

my take: if the study authors could qualify a subject's liked videos, they could qualify a subject's liked activities, and study activation thresholds prior to and post short form content exposure. this would provide a better substrate from which to draw such conclusions.

but I don't need a study to tell me that short form content fries the brain ... it fries my brain!

thin_carapace 30 minutes ago | parent | prev | next [-]

the linked study effectively drills down on aspects of previous work ...

"High-frequency SFV [short form video] use was consistently associated with attentional disruption, reduced executive functioning, and emotional dysregulation."

"Neuroimaging results revealed reduced activation in the Dorsolateral Prefrontal Cortex (DLPFC) and Anterior Cingulate Cortex (ACC) regions ... when participants viewed personalised TikTok videos."

https://www.medrxiv.org/content/10.1101/2025.08.27.25334540v...

"(The ACC) is involved in ... higher-level functions, such as attention allocation, reward anticipation, decision-making, impulse control .. and emotion."

https://en.wikipedia.org/wiki/Anterior_cingulate_cortex

"The DLPFC is ... the highest cortical area that is involved in motor planning, organization and regulation."

https://en.wikipedia.org/wiki/Dorsolateral_prefrontal_cortex

by permitting unlimited short form content and not disallowing child access we are allowing corporations to destroy kids brains. therefore I posit the latest generation has been rendered retarded, which will pose a dire threat to continued stability unless addressed.

Zetaphor 22 minutes ago | parent [-]

It's this generations leaded gasoline and paint

zuzululu 20 minutes ago | parent | prev | next [-]

very worrying study, essentially its a digital->neurochemistry chasm crossing substance that uses the 2 senses.

all more reasons to heavily discourage the usage of short form content , we might require regulations against what is essentially an invisible drug that rapidly replicate and distribute itself among the masses.

thin_carapace 17 minutes ago | parent [-]

define short form content as anything under an arbitrary time threshold, legislate all online providers of short form content to mandate an arbitrary time limit per day for all users, add a law that parents knowingly allowing children to exceed national daily short form content limits are subject to penalty. seems fairly straightforward. but uh, I guess we could all capitulate to giving corporations our biometric data ...

fl4regun 6 minutes ago | parent [-]

I don't think it's straightforward at all. What's considered "short form content".

Just video?

Does just audio count?

Does a gif count?

What if I make a website that uploads videos at 1/10th the speed, and the user plays it back 10x faster so it becomes short form?

What if i make a video aggregator website that pulls from multiple different sources so the user gets around the time limit per day per user?

What if users just make multiple accounts?

I don't think we are legally equipped to deal with this at all.

taurath 4 minutes ago | parent | prev [-]

LLMs and social media is 500+ PHD behavioral psychologists working together to make you do things at any price so they can make as much money as they can - in fact, if they don't try to make as much money as they can, everyone involved will be fired.

To me this is one of the final forms of our current laissez-faire capitalism - we are literally taking away our own agency in the name of "freedom" (of capitalists to maximize returns).