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Brad Caldwell Profile
Brad Caldwell

@Caldwbr

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Studying how the brain makes consciousness with particular emphasis on how it makes the 3D geometries within perceptual space ("cognitive map").

Auburn, AL
Joined December 2022
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@Caldwbr
Brad Caldwell
5 months
New preprint! Spectral Amplitude Modulation in EEG: Potential Correlations with Musical Stimuli (DOI 10.6084/m9.figshare.27115354): Five songs were played while recording EEG. Later, the signals were visualized as TFA fabric (time-frequency-amplitude) in a 500 ms window, aligned with the audio, to look for correlations between features in the TFA fabric and features in the music.
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@Caldwbr
Brad Caldwell
13 hours
Why would you pay $100b for openai? I can make a model about as good on my computer with open source weights, literally for free. Maybe it's for the GPUs?
@KennethBodin
Kenneth Bodin πŸ¦‹
17 hours
If Musk et al acquire OpenAI for $100b as now announced, they will at least lose one paying subscriber right away. Actually, I think they will lose most subscribers. AI is apparently too much for some US tech capitalists. They are about to lose their minds about it..
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@Caldwbr
Brad Caldwell
15 hours
Also, I wonder if '2D' frames aren't totally 2D. What I mean is, they seem to have some slight thickness, even if just an eighth inch. And if you are less sedated, they may assume the shell or surface of a box with more like 1" thickness (I have called these 'puzzle pieces,' not sure why that name seems fitting to me). It is still just the 2D surfaces of the box, not the volume inside, but in a sense it is always more than infinitesimal thickness 2D.
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@Caldwbr
Brad Caldwell
18 hours
@bilawalsidhu Technically those are 41,253 Sq degree cameras.
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@Caldwbr
Brad Caldwell
19 hours
@elonmusk I know it isn't government, but can you find a way to give business owners an opt out from telemarketers? We can't get on do-not-call since we need new customers calling, but 20-60 telemarketers calling/texting per day is dangerous to road safety and productivity.
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@Caldwbr
Brad Caldwell
20 hours
OK so the level of the hard problem. I guess what I think is most likely is not that trinity (physical, mental, platonic), but rather physical, with an ability that a system set up a certain way will extract and make use of mental/platonic meaning to instruct action. So the mental/platonic is sort of transient, can be knocked out with anesthesia. Anastomotic (neural net) extraction or bridging of complex info is the experience. It isn't very attractive, definitely feels like experience is an undiscovered force like magnetism, so I'm not 100%. Btw, Twitter thought it needed to censure your diagram lol!
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@Caldwbr
Brad Caldwell
21 hours
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@Caldwbr
Brad Caldwell
1 day
RT @AkiyoshiKitaoka: Cone or funnel
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@Caldwbr
Brad Caldwell
2 days
For some reason this evening I was seeing frames fairly well in normal state. At one point, dua lipa hot like hell song is going through my head, and imaginal frames a star wars walker machine is stepping towards me to the beat. That whole scene fit in about a cubic foot of reality schema space. I wasn't thinking about star wars, don't know why it did that. But I think it is cool to be able to see your imagination a little. I think the stuff I'm seeing is different than hyperphantasia, because I wasn't thinking about it. Was thinking too, you don't need a nose to smell (can smell in dreams), don't need a heat source to feel heat (can feel heat if you mistakenly think a heater is on). The percept is the same. So the percept doesn't require external activation. Any experience can be created by the brain, with or without sensors.
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@Caldwbr
Brad Caldwell
2 days
RT @abakcus: This topology made me smile. [
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@Caldwbr
Brad Caldwell
2 days
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@Caldwbr
Brad Caldwell
2 days
@Amir_Arsalan_ @doristsao I agree. Neuroscience as a whole is not inclusive (to invention, discovery), and there is stigma against practical understanding of how the brain works. Seems like maybe 20% of the grants are going to busywork projects.
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@Caldwbr
Brad Caldwell
2 days
@MaxDiffusionRL Sure, swing by auburn al (or DIY), I'd be happy to run a test. I like seeing what other brains do. B/w mine and hers, the Fz amp mod response to music is the most different. She shows spiky response in high gamma band (40 Hz), I show more dampening by that frequency.
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@Caldwbr
Brad Caldwell
5 days
At a given time (millisecond), not only do know more than one point for an attended moving object at that time, we also know the points for a window of pastness (about 1 second, can roughly know for longer periods). We hold a model of a sliding time window, whose opacity is like a half gaussian centered on present and going into past.
@aaarataki
Arataki (brachiating in NZ 🌿🦧)
5 days
one of the primary funtional properties of sentience is object tracking: phenomenally bound conscious states enable the simultaneous (spatial) representation of multiple data points whose locations can be tracked across different (time) frames.
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