Tag: brain

Coffee rewires the brain

admirable, and very interesting data.

How does this map relate to your brain? Do these connections persist over a period of months or more? Or do they vary with different conditions (happy or sad mood, etc.)? And what if you’re a schizophrenic, alcoholic, meditator, or videogamer, etc., how does your connectome look?

These questions obsessed Stanford psychologist Russell Poldrack, leading to his “MyConnectome project.” In the noble DIY tradition of Marie Curie, Jonas Salk, and Albert Hoffman, he started off his day by climbing into an MRI machine and scanning his brain for 10 minutes Tuesdays and Thursdays every week for 18 months — making his brain the most studied in the world.

Fasting with no caffeine on Tuesdays radically changed the connection between the somatosensory motor network and the higher vision network: it grew significantly tighter without caffeine. “That was totally unexpected, but it shows that being caffeinated radically changes the connectivity of your brain. We don’t really know if it’s better or worse, but it’s interesting that these are relatively low-level areas. It may well be that I’m more fatigued on those days, and that drives the brain into this state that’s focused on integrating those basic processes more.”

Self-directed neuroplasticity

the more you attempt to focus, the better you get at focusing on command, and so a real change begins taking place – you slowly become able to think differently, to hold thoughts differently and to dismiss thoughts that before led to attention difficulties or unwanted thoughts and clutter – and that’s not magical or the result of shaking hands with a deity. It’s biological. In the interview, Michael explains the benefits of the secular, scientific practice of modern mindfulness meditation

Energetics of future minds

Unless one thinks the human way of thinking is the most optimal or most easily implementable way, we should expect de novo AI to make use of different, potentially very compressed and fast, processes. (Brain emulation makes sense if one either cannot figure out how else to do AI, or one wants to copy extant brains for their properties.) Hence, the costs of brain computation is merely a proof of existence that there are systems that effective – the same mental tasks could well be done by far less or far more efficient systems.

Memory loop

On March 14, 2005 “William O” received an anesthetic for root canal surgery. The next morning when William woke up, he thought it was still March 14 and that he had a dentist appointment. He’s had the same impression for the last 3800+ days.

Face blindness

I’m always looking for visual hooks. My daughter has a particular thing she does with her mouth. If there’s several people who could be her, I look for the mouth thing. If she’s nervous, or she’s irritated, one side of her mouth goes up. She’s done it since she was a baby. She doesn’t like having her photograph taken, so when I look at a group photo, I look for the kid with the smirk and I know it’s my daughter.