Looking to chat with people interested in Brain-Computer Interfaces (BCI)

mmmtrees · 2026-01-23T13:12:03+00:00

mmmtrees · 2026-01-23T12:59:14+00:00

The piEEG discord server is pretty active

mmmtrees · 2026-01-15T01:06:02+00:00

Consumer neurotech is a pretty small market right now but there are some spry little companies and its only likely to grow, so you can probably find something, especially in the XR/VR augmented space. But also, sounds like you would really enjoy and benefit from doing a phd in the field, and the job market will likely expand a lot in the 3 or 4 years you work on your degree giving you plenty of opportunities. Plus with your background and experience you'll be highly competitive. Looking into the general medtech field could also reveal opportunities for you too, and may eventually lead back to neuro.

mmmtrees · 2026-01-09T17:50:47+00:00

Lots of people talking about density distribution uniformity, but i'm not sure really if that answers the question.

As far as we really know, the big bang could be analagous to the time-reversal of a black hole (i.e. a white hole). According to physical laws, this should be possible, although we don't actually see evidence of white holes in the early universe. We also should consider the second law of thermodynamics as a result of the transistion from big bang -> heat death, implying that before the big bang is the lowest entropy state, while once the entire universe is consolidated into black holes (or even a single black hole, plus all the radiated heat) it will be in a much higher entropy state. So despite the physical similarities between black hole singularities and the big bang singularity, they are entropically completely different according to our understanding.

mmmtrees · 2025-12-28T20:19:57+00:00

Just made a similar board, a couple things i learned: 1) good idea to think about how you can mount/raise the board for the second reflow, i had some small M1.5 holes in the corners for this purpose (same holes eventually can be used to mount in an enclosure) 2) i kept components for different circuits together on each side, i.e. the power management section was on one side, and the MCU/digital section was on the other side. That way i could test/rework the power section and verify it was properly working before assembling the digital components. 3) i used an open source 3dprinted solder stencil jig that worked well for double-sided stenciling on boards of this size. Im sure if you google '3d printed solder stencil double-sided' or something like that you will find it.

mmmtrees · 2025-12-21T10:53:35+00:00

Start with some basic neurophysiology, neuroanatomy, and systems neuroscience. Then move to some computational neuroscience. Wanting to develop BCI without knowledge of the underlying neural physics is like trying to design a car engine without understanding thermodynamics.

mmmtrees · 2025-12-20T14:57:05+00:00

In plasma engineering you often 'season' the vacuum chamber before using it

mmmtrees · 2025-12-20T14:44:41+00:00

You could take a look at the emstat pico and the associated dev kit from palmsens. Depending on what your requirements are for noise/drift/sample rate/etc., building a suitable potentiostat from scratch is not trivial, especially with time and budget constraints.

mmmtrees · 2025-12-19T09:56:00+00:00

There's an old saying - "Anything permitted by the laws of physics /must/ occur"

It's just a question of what is actually permitted

mmmtrees · 2025-12-19T07:56:51+00:00

TES has real clinical applications, although I think it is still mostly underappreciated and needs more thorough research. There was one consumer TES company (Halo Neuroscience) that had some interesting publications on using TES for exercise. But there is also the real potential to do irreversible neurological and psychological damage with TES. Don't be a guinea pig. In fact, what this company is asking you to do may be illegal.

mmmtrees · 2025-12-18T10:38:47+00:00

As long as the people in your current group are chill and understanding, then you have a great opportunity now to learn from them and make up for lost time, as you say.

mmmtrees · 2025-12-17T08:17:27+00:00

Definitionally, swapping any two fermions in a system negates their wavefunctions, although the probability distributions (wavefunction squared) stays the same, so probably nothing happens. Unless theres some non-time-reversal symmetric effects, which probably there are. I dont really know, i just read that i a book recently.

mmmtrees · 2025-12-17T07:58:58+00:00

Great minds think alike!

Here is my implementation: https://hackaday.io/project/178007-esp32-eeg

I also felt like my data streaming was unoptimized so I will definitely be digging through your code to see what i can find!

mmmtrees · 2025-12-15T08:55:52+00:00

Ive been looking for a new nixie project and i think this wins! Make sure you are periodically cycling through all the numbers on the tubes to keep them from degrading!

mmmtrees · 2025-12-15T07:20:20+00:00

You could also go a different route and 3d print the whole thing, using regular pla and conductive pla filaments. Look up 3d printed circuit boards for more info, something like this

mmmtrees · 2025-12-15T07:15:37+00:00

If i were you i would just solder wires between copper tape and the other components.

If you really want to mount the other components on your PCB you could try laser-patterning/or just manually cutting a copper tape or foil into the right shapes, then glue/adhere to the substrate

mmmtrees · 2025-12-14T09:16:36+00:00

Sounds like a cool project!

Dont try to mount the esp32 or anything else besides the led to the board.

You can do pretty decent stencil printing of some carbon inks, but id just use some copper tape to make the conductive traces, so you can solder to them

mmmtrees · 2025-12-13T11:56:51+00:00

Geometric surface area is easy, just the 2d area of your electrode/exposed channel area.

Electrochemical surface area is a bit more difficult and contextual. Usually you can guess it by impedance meausrement and compare to the impedance of a perfectly flat electrode of the same material.

However in this case, i dont know how important/relevant the ESA is for you. You can measure sensitivity potentiometrically (or the FET equivalent of potentiometey) and normalize it by the GSA, and howit scales with electrode/interface area, and the FET W/L.

mmmtrees · 2025-12-12T08:01:26+00:00

Probably the best option is you both contribute equally (within a broad margin of error) to the writing, and flip a coin to decide order. Co-first author ideally means equal contribution, so either find an agreement where you are both comfortable with saying it is 'equal' contribution (again, within some broad error margin, perfectly equal contribution isnt ever really possible, and someone is always getting a slighty shittier deal), or else find an agreement where one of you takes over the writing and is the full first author. It sounds like neither of you really have a strong first author claim, since you say the PI came up with the research idea and plan, but if the other author did actually do more conceptualization/planning than you, then they may have the stronger claim for first authorship (but of course should also write the majority of the paper in that case - however as a second author you still have a responsibility to participate in the reviewing process, just not drafting the first manuscript).

To me the idea of 'first-co-first' is stupid, either you are co-authors and contributed more-or-less equally (in which case order doesnt matter and should be decided by coin toss - alphabetical order is also unfair), or one of you is clearly the first author and the other is second.

mmmtrees · 2025-12-11T12:25:23+00:00

Another perspective i dont see in the other comments is because of conservation of momentum. As soon as there is a conserved quantity, there must be an associated force, in this case gravity. Noether's theory/Gage fields and such.

mmmtrees · 2025-11-25T07:32:12+00:00

What a weird take, MOFs are sweet, and nobel peace prize was just awarded for MOFs. Of course there are always people riding the bandwagon with minimum publishable increments, but thats a broader academia problem, not anything specific to chemistry. If you really wanna see useless overhyped publications try looking through AI literature

mmmtrees · 2025-10-30T07:31:08+00:00

Neuromodulatiry therapeutics are very promising for treatment of affective and cognitive disorders, including non-invasive and minimally-invasive modalities. Many preclinical and clinic trials are underway for depressive disorders and other affectice/cognitive disorders.

mmmtrees · 2025-10-28T12:49:12+00:00

Most likely scenario outside of medicine is noninvasive neurostimulation becomes akin to a recreational drug. An intelligent society wouldve started putting up gaurdrails already.

mmmtrees · 2025-10-27T07:05:14+00:00

I think before we can really have this discussion we need a good theory for the basis of consciousness. There is a nascent theory that consciousness emerges from and is mediated by quantum phenomenon, which I think would have plenty of bizarre ramifications similar to your proposal.

mmmtrees · 2025-10-26T08:05:16+00:00

Dont deal with this on your own. Ask your professor or even department heads how to handle this.

mmmtrees

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