Alzheimer's Buddy
Hardware
light and sound stimulation
SHOW HN2024
96points
79comments
#862of 3,515 in 2024
Top 25%of 2024 by points
How HN took it
RoastedHalf or more of the comments are critical
2 positive, 21 neutral or asking, 0 mixed, 23 critical, out of 46 comments about the project. Thread score -0.37.
Performance: 0 for, 18 againstIdea: 2 for, 2 againstExecution: 0 for, 1 againstDocs: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Interesting concept and project
From 2 comments
Cool concept and project. I don't know if browsers are capable of doing the flash reliably. I tried it out (non-epileptic and curious), and you can see that it's not a reliable…
mmastrac on HNOh my, Rust vs JS. It's almost guaranteed there will be more comments about that than the actual treatment. That's awesome that you created something free. You might want to add…
giantg2 on HN
Objections
Flashing damaged monitors, causing lasting flicker
From 3 comments
Warning: This just fucked my 2k$ 4k LG display. I ran the website 15 minutes ago and quickly closed it after 15 seconds. My screen is still flickering in the portion of the…
adv0r on HNI'm not sure what just happened but this webpage literally damaged my monitor. There is now some flickering over the whole screen (it's not my mind, I filmed and checked my mind…
roflmaostc on HNJust a warning - running this for a few seconds has left my secondary display with an ongoing flicker which seems to be improving after 10 minutes and a reboot. [edit to add] 10…
monkey_monkey on HN
Browser timing is unreliable and 60Hz screens cannot show a true 40Hz flash
From 3 comments
Cool concept and project. I don't know if browsers are capable of doing the flash reliably. I tried it out (non-epileptic and curious), and you can see that it's not a reliable…
mmastrac on HNThe code effectively flashes the monitor at 30 Hz on any 60 Hz monitor (the time delta will always be 16.66 ms or more). I have tried this before and noticed a lasting effect on…
larschdk on HNInteresting, thank you for this. I'm curious, if we assume that majority of screens are at 60Hz refresh rate, how does 40Hz flashing actually outputs in real life. For a 120Hz…
atmanactive on HN
Seizure warning needed for flashing content
From 2 comments
Wow, this is intense! Think twice before sampling it if you have any sensitivity to flashing lights. Might seem obvious, but apparently needs saying!
zackkatz on HNPeople usually put a seizure warning for flickering stimuli, for a reason.
methou on HN
Research evidence is weak and based on mice
From 2 comments
First: in mice, raised on a doxycycline-containing diet. Second: if I've understood correctly, there's no idea about what causes Alzheimer, which would reduce the significance of…
tgv on HN"Flashing Light and Sound at 40Hz helps Alzheimer’s" is an extra-ordinary claim. The research that might support the claim would be interesting, more so that Javascript that…
SideburnsOfDoom on HN
Requests
Add a clear warning about screen damage and seizures
From 2 comments
Warning: This just fucked my 2k$ 4k LG display. I ran the website 15 minutes ago and quickly closed it after 15 seconds. My screen is still flickering in the portion of the…
adv0r on HNI feel like it would be more ethically responsible for this site to put the warning it has at the top of the screen instead of the bottom. For no other reason than to be as clear…
cbondurant on HN
Use a microcontroller or hardware for accurate timing
From 2 comments
Given the problems people are having with their monitors, and the inherent issues with timing on a 60hz screen and timing on a enormous mass of abstraction... Using a…
Workaccount2 on HNShouldn't really need a DAC, just use the PWM output. Any $5 microcontroller should be able to do this with some reliability. Heck, the PiPico has programmable IO which could do…
bobdvb on HN
Verify frequency accuracy across hardware
From 1 comment
Oh my, Rust vs JS. It's almost guaranteed there will be more comments about that than the actual treatment. That's awesome that you created something free. You might want to add…
giantg2 on HN
Questions
Does it work reliably on 60Hz monitors?
From 2 comments
Interesting, thank you for this. I'm curious, if we assume that majority of screens are at 60Hz refresh rate, how does 40Hz flashing actually outputs in real life. For a 120Hz…
atmanactive on HNThe code effectively flashes the monitor at 30 Hz on any 60 Hz monitor (the time delta will always be 16.66 ms or more). I have tried this before and noticed a lasting effect on…
larschdk on HN
Why does silent mode block the audio on iPhone?
From 1 comment
So that's why it wasn't working. Videos and everything else will except incoming calls works in silent mode just by turning the volume up. Why is this an exception?
macrolime on HN
Alternatives named
mynoise 40Hz brainwave generator
From 1 comment
One of the things I've personally enjoyed using on and off in the mornings, in this 40hz space, is: https://mynoise.net/NoiseMachines/forty40HzBrainwaveGenerator.php Mynosie…
cubeanie on HN
Cheap signal generator with LEDs and headphones
From 2 comments
Could you just buy a cheap signal generator and hook it up to some LEDs and headphones to make a hardware version of this?
throwaway4aday on HNyikes! a cheapo generator on Amazon is like $10 and you can probably get them for less on AliExpress. Not sure if you'd have to amplify the signal for either LEDs or headphones…
throwaway4aday on HN
Video file played on 120Hz display
From 2 comments
This is funny. Just this week, I've been thinking about simulating a Dreamachine[1] in software. Isn't the obvious solution to your timing problem to distribute it as a video…
flir on HNYou can also generate a video file that does the same thing and play it back locally on a high refresh rate device (iPad Pro). Unfortunately, don't expect it to actually do…
geoffry on HN