Category Archives: Cognitive Science

Captures intersections of psychology, neuroscience, linguistics, AI, and philosophy.

Memory creates the illusion of continuity

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Daniel Kahneman said, “There are the experiences in our lives… and our memories of those experiences. And they are not the same.”

Memory seems to be the secret sauce to that feeling of a continuous, unchanging ME. But I’m finding it increasingly difficult to think of my memories as “mine.” It was easier when I thought of them as photographs in a shoebox on a shelf in my mind.

“Memories are not etched permanently in the brain. Instead, every time a memory is retrieved, it is destroyed and then re-created, and it becomes a memory of a memory. Any current memories we have are copies of copies of copies… many times over depending on how many times we have recalled that particular experience. Because of this process of creating, destroying, and re-creating memories, our recollections are unstable and subject to alteration. Each time we recall an event from our lives, the memory of that event can change. […] We never have a full recollection of anything that’s happened to us, and our memories are constructed from hints, scraps and traces found within the mind.” — Living As A River

I have a memory of a four-year-old Steve jumping up and down on the bed and then crashing through the bedroom window. Obviously that didn’t happen and I have no idea when or how the memory was formed. How many other of my memories are “constructed?”

Thirty years ago Barb and I went to New York with another couple. It was miserably cold and I remember almost nothing of that weekend. I have a photo of me with a parrot sitting on my shoulder. That must have happened but I’m not sure if I have a memory of the experience or if the photo somehow created that memory.

So what remains when the person, that oh-so-strong sense of a permanent self, is gone?

“A vague memory remains, like the memory of a dream, or early childhood. After all, what is there to remember? A flow of events, mostly accidental and meaningless. A sequence of desires and fears and inane blunders. Is there anything worth remembering? Realize that your present existence is like a shower of sparks, each spark lasting a second and the shower itself — a minute or two.” — Nisargadatta Maharaj

My memories seem so important. Would there be a “me” without them? And, yet, when I examine them, one at a time, they are indeed “mostly accidental and meaningless.”

James Gleick says “We experience childhood one way when we’re living it and another way when we relive it in memory.” Good. That means it was more fun than I recall.

Again, James Gleick: “But if memory is the action of recollection, the act of remembrance, then it implies an ability to hold in the mind two constructs, one representing the present and another representing the past, and to compare them, one against the other. How did we learn to distinguish memory from experience?”

Might that be why memories are mostly fuzzy and vague, “…constructed from hints, scraps and traces found within the mind.” We seldom confuse experience with memory.

I’m spending a lot of time thinking about the question who or what am I? And the answer I keep coming up with is: I am this immediate experience. And nothing more. As Alan Watts said, “This is it.” But it’s impossible for me to think of an experience as a discrete ‘thing.” Each is gone before I can bring it into consciousness. I can only think about the experience that just slipped away. It easier to think in terms of process, a flow of experiences. Ever changing. Never the same. That means keeping all the inputs wide open. Turn down the noise, turn up the signal. Be here, now.

The Mind-Body Problem

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“The scientific and philosophical consensus is that there is no nonphysical soul or ego, or at least no evidence for that.” — Philosopher David Chalmers

From Consciousness: The Mind Messing With the Mind (NYT)

“Michael Graziano, a neuroscientist at Princeton University, suggested to the audience that consciousness is a kind of con game the brain plays with itself. The brain is a computer that evolved to simulate the outside world. Among its internal models is a simulation of itself — a crude approximation of its own neurological processes. The result is an illusion. Instead of neurons and synapses, we sense a ghostly presence — a self — inside the head. But it’s all just data processing. “The machine mistakenly thinks it has magic inside it,” Dr. Graziano said. And it calls the magic consciousness.”

I think this is what is commonly referred to as “the hard problem.” How minds are generated by brains.

“Some philosophers and scientists have been driven back to the centuries-old doctrine of panpsychism — the idea that consciousness is universal, existing as some kind of mind stuff inside molecules and atoms. Consciousness doesn’t have to emerge. It’s built into matter, perhaps as some kind of quantum mechanical effect.”

I like the idea of universal consciousness. Until there’s solid, scientific consensus on how the brain creates consciousness… this is as good an explanation as any.

Silence

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In the future, people will be prepared to pay for the experience of silence.

I extremely fortunate in this regard. I have a lot of silence in my life. I live at the end of a gravel road, surrounded by woods. No screaming children in my life (at least none I can’t avoid). Barb doesn’t need me to entertain her so I can experience hours of silence if I choose. I don’t take this for granted. The flip side is I have less tolerance for noise than I once did. From the article below (This Is Your Brain On Silence):

“Two hours of silence per day prompted cell development in the hippocampus, the brain region related to the formation of memory, involving the senses. […] The growth of new cells in the brain doesn’t always have health benefits. But in this case, Kirste says that the cells seemed to become functioning neurons.”

“There isn’t really such a thing as silence,” says Robert Zatorre, an expert on the neurology of sound. “In the absence of sound, the brain often tends to produce internal representations of sound.

“If you want to know yourself you have to be with yourself, and discuss with yourself, be able to talk with yourself.”

I do a good bit of this kind of introspection and, occasionally, wonder if it’s good for me. The article says yes. Shhh.

How LSD affects consciousness

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Researchers have published the first images showing the effects of LSD on the human brain, as part of a series of studies that are examining how the drug causes its characteristic hallucinogenic effects. (More at Nature)

“Within some important brain networks, such as the neuronal networks that normally fire together when the brain is at rest, which is sometimes called the ‘default mode’ network, we saw reduced blood flow — something we’ve also seen with psilocybin — and that neurons that normally fire together lost synchronization. That correlated with our volunteers reporting a disintegration of their sense of self, or ego. This known effect is called ‘ego dissolution’: the sense that you are less a singular entity, and more melded with people and things around you.”

Evolutionary Argument Against Reality

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Interview with Donald D. Hoffman, a professor of cognitive science at the University of California, Irvine. Hoffman has spent the past three decades studying perception, artificial intelligence, evolutionary game theory and the brain, and his conclusion is a dramatic one: The world presented to us by our perceptions is nothing like reality.

“Useful as it is under ordinary circumstances to say that the world exists ‘out there’ independent of us, that view can no longer be upheld.” — Physicist John Wheeler