Mind & gray matter

After an interlude of fiction-reading and the start of the semester, during which there is little time for personal reading, I have returned to some of the topics of neurology, consciousness, and the evolution of the story-telling mind that have so often diverted me from–yet influenced my thinking on–poetry.

Just a brief overview of my “difficult books” of the past four or five years…I have a background in philosophy and, to a much lesser extent, theology. Both disciplines endeavored over thousands of years to explain why we think the way we do and why or how we reason, make decisions, and make clearly unreasonable decisions.

The Free Will paradox, the Mind-Body Problem, ethics, tribalism, the body politic, you name it.

My thinking tends to sway slightly Eastern in terms of intention, mindful behavior, and non-theistic compassion despite my being raised pretty much Western Protestant with Enlightenment ethics and values (also compassion, as based upon the teachings of Jesus).

Throw in a bit of psychology built upon philosophical foundations, Freud, William James, Darwin, Thoreau, and my constant searching for what makes a being conscious, and I end up with an eclectic but not unreasonable reading list.

Also poetry. But I digress.

Here’s the barest outline of my more recent forays into understanding the probably not-understandable: I read Stuart Kauffman’s book At Home in the Universe to obtain a grasp of a chemistry-and-statistically-based (Boolean) thinking concerning how consciousness may have arisen in the universe and whether we Earthly human beings may not be entirely alone as conscious beings in a huge and expanding cosmos. Frances Crick’s The Astonishing Hypothesis offers a biologist’s view of how we ought to go about trying to study consciousness and its evolution based upon biological science. Douglas Hofstadter’s I am a Strange Loop, a deeply engaging look at an interdisciplinary concept of consciousness, examines evolution, biology, neurology, and a bit of physics and philosophy; Dennett & Lakoff’s Philosophy in the Flesh grounds philosophy in neurological underpinnings. Just to be sure the physicists are not overlooked in my overview of consciousness, I’m now reading Werner Lowenstein’s Physics in Mind: A Quantum View of the Brain.

Referenced in almost all of these books are Patricia Churchland, the D’Amasios, Thomas Nagel, Thomas Kuhn, Charles Darwin, Descartes, and Kant.

To name a few.

brad-hammonds-flikr-books

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What good has this reading done me, in terms of understanding what constitutes consciousness, from what it is derived, and how it evolved? Do I know any more than I did about human beings? I certainly know more about the human body, especially the brain, than I did. I know more about the cellular level of information processing and more about theories people have posited during the past centuries–and what aspects of those theories seem to have had either intuitive, reasonable influence or scientific (empirical) value.

That last paragraph appears to be question-dodging, doesn’t it?

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I love to read. I love human beings. I love the phenomena of the visible and experiential world. I love the urgent fuel of creativity. Can that be enough, for now?

In time, maybe I will come to accept the fraying of the consciousness, the decay of memory and the intimate Beloveds as they fade into senility or pass out of the tactile world.

 

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Self as social

I’m an introvert. I need and, indeed, quite enjoy people–but in small groups and short doses. Much as I love you, I may still need to retire alone with a book or journal or a long walk in the meadow by myself to re-charge my energies, which are low enough to begin with these days.

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Potter’s curled-tight hedgehog, my animal totem

I think of that as alone with my Self. But recent reading along neurological, evolutionary, and psychological lines has me questioning this Self that seems to own its singular consciousness, and makes me consider the self-less consciousness of, say, Zen Buddhism.

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From Carl Zimmer’s book Soul Made Flesh:

 

Finding the mechanisms of consciousness will not mean we lack a true self. It’s just that this self looks less and less like what most of us picture in our heads–an autonomous, unchanging being that has a will all its own, that is the sole, conscious source of our actions, and that distinguishes humans from animals. All animals probably create some kind of representation of their bodies in their brains, and humans simply create a particularly complicated model…

The human self did not reach this complicated state on its own. Thought is more like a node in the social network of our species…The human brain can make a series of unconscious judgments about people…in a fraction of a second. In recent years, neuroscientists have been mapping our the networks that make this social intelligence possible, and one of their most astonishing discoveries is that a picture of the brain thinking about others is not all that different from a picture of the brain thinking about oneself. Some neuroscientists think the best explanation for this overlap is that early hominids were able to understand others before they could understand themselves.      [italics mine]

In the foregoing passage, Zimmer cites Damasio, M. D. Lieberman, and an academic-philosophical article by Endel Tulving (2001) titled “Episodic Memory and Common Sense: How Far Apart?” that basically shows how little we can depend upon our own memories as “fact” and how deeply we engage in forms of storytelling to connect our memory episodes. It is possible that our general knowledge of things-as-they-are (including the behavior and “minds” of other beings) evolved before our ability to recall episodes of experience. Tulving writes:

…when we wonder which came first, episodic memory (experiences) or semantic memory (facts), common sense tells us that the answer is episodic memory. Information gets into semantic memory “through” episodic memory: First an individual has a particular experience in the course of which he, say, learns a new fact, and later on he can use the knowledge thus acquired independently of any remembering of the original learning episode as such.

This is what many experts in the area of memory have believed (and many still do) ever since the distinction between episodic and semantic memory was drawn. The careful reader of papers in this issue will be able to spot statements to this effect in various chapters. Nevertheless, although the jury is still out on this question, and although the final answer may turn out to be of a kind that almost always is reached at the end of debates (“well, it all depends”), I believe that the correct view is the reverse of common sense: information gets into episodic memory through semantic [general knowledge] memory.

He closes with the observation that “evolution is an exceedingly clever tinkerer who can make its creatures perform spectacular feats without necessarily endowing them with sophisticated powers of conscious awareness.” Darwin would not disagree.

Now to mull over the idea that my self is part of a wide-ranging network of human relationships, and hence not so entirely my “own.” Ha–I find myself of two minds (or more!) on this one.  😀

Coincidence & synthesis

I adore random synthesis. I love how coincident information, ideas, and experiences connect to enrich my understanding or pique my interest.

Today, a friend sent me a link to a chapter from the Dalai Lama’s book and another friend sent me to New York Magazine‘s Science of Us blog to read Cody Delistraty’s piece on the neurology of poetry reading. Meanwhile, I have been cleaning my bookshelves and reading Jane Hirshfield’s Ten Windows.

books1Delistraty’s essay reports on a study (in Germany) conducted by Eugen Wassiliwizky, a researcher at the Max Planck Institute for Empirical Aesthetics, on what happens in the human brain when people read or hear poetry. The Institute has sponsored quite a few studies on the neurological responses to the arts, which offers researchers not just the findings from one area of aesthetics but the opportunity to compare responses across artistic disciplines.

For example:

…[Neurological] responses… seemed to be unique to poetry: Scans taken during the study showed that listening to the poems activated parts of participants’ brains that, as other studies have shown, are not activated when listening to music or watching films.

The authors also found evidence to support the idea of poetry’s pleasure as a slow-building experience, or what they called a “pre-chill”: While listening to poems they found particularly evocative, the listeners subconsciously anticipated the coming emotional arousal in a way that was neurologically similar to the reward anticipation one might get from, for instance, unwrapping a chocolate bar.

Delistraty notes that in this study, “the poetic lines that most emotionally stirred people were also most memorable for them later.”

Our brains ready themselves for surprise, delight, arousal, some emotional leap in the poem–even before the poem ends–anticipation. I know that feeling well. We are anticipating some kind of surprise or delight as the poem unfolds in our reading or listening real-time imaginations: a kind of freedom that we anticipate but cannot expect (the poem may surprise us in ways we had not anticipated; or it may disappoint our hopes).

Hirshfield writes:

On the one hand…poetic transformation occurs by what might be called the paradox of intimate distance. The freedom inherent in art to choose stance, attitude, approach, form, word, is in itself an act of emancipation. When distance increases…we often feel more, not less, because we are able to take in the whole.

What we “take in” as whole includes the phenomenon of reality, even though the poem operates in the imagination–another paradox. Reading a good poem, then, opens consciousness. bkmk-violet

I realize that in the years keeping this blog, I have never yet found a satisfactory understanding of what makes human beings conscious or from whence consciousness originates; but that’s one reason I keep reading and writing, Socratic gadfly that I am. And that brings me to the third random reading that, to my mind, synthesizes well with the essays I’ve mentioned. Here’s an excerpt from one of the Dalia Lama’s books that was posted on Lion’s Roar, a Buddhist-oriented website. In this chapter, His Holiness has been visiting with neurosurgeons and brain researchers at the cutting edge of medical science–people deeply, empirically engaged with the science of the human mind:

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The Buddhist understanding of mind is primarily derived from empirical observations grounded in the phenomenology of experience, which includes the contemplative techniques of meditation…

The view that all mental processes are necessarily physical processes is a metaphysical assumption, not a scientific fact. I feel that, in the spirit of scientific inquiry, it is critical that we allow the question to remain open, and not conflate our assumptions with empirical fact…A crucial point about the study of consciousness, as opposed to the study of the physical world, relates to the personal perspective. In examining the physical world, leaving aside the problematic issue of quantum mechanics, we are dealing with phenomena that lend themselves well to the dominant scientific method of the objective, third-person method of inquiry… In the realm of subjective experiences, however, the story is completely different. *

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Part of what makes poetry, or any art form, “work” is that appeal to the subjective. Subjectivity excludes the empirical; there’s always, somehow, more to art than science can explain–wonderful as science is. Delistraty writes, “poetry transcends…methodical scrutiny. It valorizes the unconscious, opening us up to new perspectives; it implies the possibility of unlimited pleasure.”

Hirshfield names that pleasure, that surprise, that alteration within the reader “hope” –a wonderful synthesis.

snowdrops

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* The Universe in a Single Atom by His Holiness The Dalai Lama; full discussion on https://www.lionsroar.com/studying-mind-from-the-inside/

Knowing the mind

I am reading an unusual pairing of books…Joseph Fins’ Rights Come to Mind and George Lakoff & Mark Johnson’s Philosophy in the Flesh. One is about traumatic brain (and to some extent, spinal) injury and the differences between minimally conscious states and persistent vegetative states, and what we know–or mostly, don’t know–about the brain and its ability to recover or reorganize (see also Will Storr’s article from 2015 about some recent medical discoveries in neurology).

The other book is an inquiry into how Western philosophy may be seriously challenged by scientific, empirical findings about the embodiment of the conscious self. Then, after suggesting that neural pathways help us to create abstract reason–largely through metaphor–he asks whether we can adequately understand the world through science alone!

Fins’ book is not elegantly written, from a literary standpoint; but he raises hugely important questions about consciousness, healthcare decision-making, medical institutions’ and physicians’ difficulties dealing with how to measure consciousness and brain activity–to determine who may be “locked-in” or who is minimally conscious, or which patients will never recover any conscious neural activity again. Fins details the agony of family members making impossible decisions in a medical system that often views brain-trauma victims as medical failures when the patient does not recover quickly enough; he asks us: by what measure is quickly-enough? (Usually, as determined by a health care insurer…alas, my family has been snarling with too-general insurance categories lately, so I am sympathetic to Fins’ perspective).

These are tough areas to investigate, and his argument is that physicians and researchers have not spent enough time investigating them. He also asserts that this would not be a waste of money on irreparably-injured patients, because we can learn much about the brain’s capacity to heal through observation, therapy, and scans of such people. He takes pains to be certain his readers recognize how much remains unknown about the brain and human consciousness. (Here, I refer my own readers to Douglas Hofstadter’s book I Am a Strange Loop).

In the Storr article cited above, Greg Downey, co-author of the blog Neuroanthropology, cautions: “People are so excited about neuroplasticity they talk themselves into believing anything.” And it is true, there’s a chance of false hope and huge disappointment here. But the brain does exhibit an astonishing ability to rewire itself–in the body.

Which brings me to Lakoff & Johnson’s text. Lakoff calls himself a cognitive scientist, not a philosopher. He says, “In 1978, I discovered that metaphor was not a minor kind of trope used in poetry, but rather a fundamental mechanism of mind.” He and his colleagues have gone on to provide a body of evidence to support this claim that they’ve been working on since the late 90s.

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neural matrix fiber topography, Johns Hopkins University

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As a poet interested in neurology and in philosophy, these claims interest me. As a person whose elderly best-beloveds are now beginning to show evidence of significant cognitive lacunae…or “decline”…I am interested in losses of neural plasticity, or perhaps a misfiring in the processes of rewiring. The evidence of such losses are, indeed, embodied. Gaps in the ability to recognize metaphor or analogy appear. On a recent visit, the nonagenarian said, “I can no longer seem to say any of the things I want to say, that I hear in my head, but can’t…can’t seem to…make. Make into the world. Do you know what I’m saying?”

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A word is dead
When it is said,
Some say.
I say it just
Begins to live
That day.

~ Emily Dickinson

 

 

 

At sundown

The disintegrating physical and mental situation of an elderly best-beloved recently has led me back (after a brief pause) to readings in neurology and consciousness. It has also led me to reflect on the tasks memory accomplishes for us and how the need to tell a story seems to reside deep in whatever “makes us human.” Many poems, perhaps most of them, are “inspired” by memories and a need to tell. So I will indulge myself by giving a narration here, and perhaps poems will follow later.

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The best-beloved has been in and out of hospitals, rehabilitation centers, and so-called independent living placement and appears to have developed a very common but not-commonly-talked-about cognitive disarray, or hospital-induced delirium, that medical personnel call “sundowning” when it occurs in Alzheimer’s patients. But my patient does not have Alzheimer’s disease. Her meshing of realities must have been triggered by something else, but the possible factors are many. We may never figure out what it was that pitched her into delusion and lack of compassion, turning her into a person we barely know.

She took good care of her body. At 90, her physical self is in better shape than many people 20 years her junior. Her brain–and hence, her mind–has not stayed as healthy as the rest of her. Several small strokes deep in her brain began to alter not just her gait but her personal focus. Long years of hearing loss no doubt altered how her brain processes input. The reading I have been doing (most recently Carr’s The Shallows, Sacks’ On the Move, and Damasio’s Looking for Spinoza) indicates that the human brain is “plastic” but not necessarily “elastic.” It can modify in response to damage or training, but that does not mean it will spring back to the way it was before. In extreme old age, the process of adaptation slows. The brain becomes less resilient. For reasons no one really understands–a host of possible culprits includes hormones, glutamates, serotonin production, medicines, genetic predispositions, and environmental factors among others (a perfect storm…)–persons who have been sharp and cogent may suddenly experience delusions, often leading to paranoia, confusion, loss of affect, lack of social filters, violent and contrary behavior.

And we ask, “What happened to the soul I love?”

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If we believe in souls, we have faith that somewhere under the changeling is the best-beloved. In flashes, she may return to us. If we believe that the brain is the person, the transition from best-beloved to aggressive complainer is harder to accept. Damasio seems to believe the brain is the person. I find it hard to agree with him fully, though I have been learning a lot about neurology in the process.

Metaphors or analogies for the situation seldom seem, to me, quite to capture the wrenching feeling I have when encountering sundowning. The idea of disintegration seems inappropriate in this case, because she recalls who we are and her mind is not collapsing so much as morphing in unaccountable ways. Threads unraveling? No, not really; the metaphor of a quilt coming undone, maybe, or an intricately-woven tapestry shredded apart–but that’s far too simplistic.

Think of the mind: it encompasses the brain with its regions for motor, somatosensory, auditory, and visual processing; the body, which takes in those physically-produced inputs; memories; thoughts; feelings, which are thoughts spurred by emotions; and a host of complex inter-relationships we cannot even begin to map. Somewhere in all of this is the person, the “self.” At least, as far as we have so far been able to speculate (though not everyone agrees; see my post on Hofstadter & Parfit. Parfit suggests personal identity is an invalid construct).

Perhaps an environmental analogy would suffice, being complex enough for comparison. She is the planet Earth, aging and adaptable, but not endlessly adaptable; her healthy balance has been thrown off by things she may not have had any control over. In whole regions, she becomes inhospitable. Poisoned. Dry. Hot. Overrun with invasives. She seems not to like us anymore, but that is not what’s going on at all. In fact, she’s dying.

Maybe that’s taking the metaphor too far. But in difficult times, one reaches far. There is hope she may recover at least some of her Self, and in the meantime, we have stories in which she plays a role. Mnemosyne–awaken in the consciousness of those who know her. Telling the stories is a step toward letting go.

 

Painfully conscious

I’ve just finished reading Melanie Thernstrom’s 2011 book The Pain Chronicles, a journalist’s inquiry into the concepts that “define” pain and the medical discoveries concerning chronic pain, in addition to a bit of memoir as a narrative device. Although I have experience with chronic pain myself, the part of the text that most interested me comes in her concluding chapters, in which she gathers the variously-disciplined evidence of her enterprise to suggest that pain is the ultimate test of the mind-body problem (thank you, René Descartes). The experts Thernstrom interviews disagree on how much we do know or can know about the human brain and how it processes anything, let alone such a complicated psycho-physiological event as pain. Some of them believe human beings will make enormous technological discoveries to unlock our brains’ workings, but the majority seem to have learned from research that each “a-ha!” leads only to further complications. Discussing the outlook for future fMRI scanning in brain research, Dr. John Keltner tells the author:

[N]obody has come up with a rich and complicated enough model to analyze the complexity of the distributed patterns of neural  networks and deduce anything like underlying rules…We’re literally grappling with the fundamental aspects of human beings. We naively believed that pain is simple–it hurts or it doesn’t hurt–so there should be a single brain state we could see every time someone is in pain. But what we’ve stumbled into is the discovery that there’s a relative universe of hurt–that hurting is an immense, rich, and varied human experience associated with an unknown number of possible brain states.

I find some of these analogies, and some of this language, appealing–I can think of poems that express “a universe of hurt.” I embrace the idea that hurting is immense, rich, varied, and human–we are aware (conscious) that we hurt, that others hurt, that hurt can be painful even when it is not caused by a toothache but through loss of a friend or lover…the beloved other, the pain in ourselves. Isn’t compassion born of this awareness? Does art have a place here, too? I wonder.

Thernstrom concludes with the agreement of several expert researchers: “pain and suffering are properties of the mind” [my italics]. That means pain is, at least in part, a property of that elusive thing we generally call consciousness. Scott Fishman of UC Davis explains that “[t]he mind is like a virtual organ–it doesn’t  have a physical address that we know of.” Consciousness, these researchers imply, is not merely the sum of firing neurons, a process that can be considered on some level mechanical. Thernstrom asks, “Do we need to understand consciousness itself in order to understand pain?”

If so, that is a tall order, one the author posits is analogous to understanding aesthetics (what is beauty?). But though the task appears daunting, the discoveries en route make the trek valuable.

Even if we never understand the answer.

neural matrix fiber topography, Johns Hopkins University

neural matrix fiber topography, Johns Hopkins University

Awareness, openness, & … magic mushrooms?

In a recent New Yorker article about potential medical uses for psilocybin (“The Trip Treatment”), science, culture, and food writer Michael Pollan interviewed researchers in neuroscience, medicine, and psychology. The medical potential of psychedelic drugs is not something I can comment on from reading just one article; what intrigued me most about this piece is how these drug studies overlap with studies on cognition, metacognition, consciousness, and spirituality. The medically-controlled “tripping” that volunteers have undergone overwhelmingly resulted in some form of what we term mystical or spiritual (for lack of a scientific term) feeling.

It’s almost impossible to consider these realms of experience without questioning concepts such as “soul” or “self-awareness.” Pollan writes:

Roland Griffiths is willing to consider the challenge that the mystical experience poses to the prevailing scientific paradigm. He conceded that “authenticity is a scientific question not yet answered” and that all that scientists have to go by is what people tell them about their experiences. But he pointed out that the same is true for much more familiar mental phenomena.

“What about the miracle that we are conscious? Just think about that for a second, that we are aware we’re aware!”

A man after my own heart. It is amazing, a kind of miracle. And we get consciousness and metacognition without any drug intervention at all. It just springs into our beings at some point, as we create ourselves from lived events and construct speculative worlds and an understanding (though often flawed) of other minds.

Here is another fascinating result from the psilocybin studies that may make us revise our ideas of interpersonal relationships, personhood, and creating a self. Pollan writes:

A follow-up study by Katherine MacLean, a psychologist in Griffiths’s lab, found that the psilocybin experience also had a positive and lasting effect on the personality of most participants. This is a striking result, since the conventional wisdom in psychology holds that personality is usually fixed by age thirty and thereafter is unlikely to substantially change. But more than a year after their psilocybin sessions volunteers who had had the most complete mystical experiences showed significant increases in their “openness,” one of the five domains that psychologists look at in assessing personality traits. (The others are conscientiousness, extroversion, agreeableness, and neuroticism.) Openness, which encompasses aesthetic appreciation, imagination, and tolerance of others’ viewpoints, is a good predictor of creativity.   [italics mine]

Openness, aesthetic appreciation, imagination, tolerance, creativity…and one researcher in neuropsychopharmacology suggests that this sort of un-boundaried openness signifies a temporary regression to an infantile state, very much as Freud hypothesized. I thought instead of Bachelard and the childhood reverie state.

Intriguing, that pharmacological work of this sort makes neuroscientists resort to citing William James and Sigmund Freud on mystical experience and the subconscious!

[Robin] Carhart-Harris believes that people suffering from other mental disorders characterized by excessively rigid patterns of thinking, such as addiction and obsessive-compulsive disorder, could benefit from psychedelics, which “disrupt stereotyped patterns of thought and behavior.” In his view, all these disorders are, in a sense, ailments of the ego. He also thinks that this disruption could promote more creative thinking. It may be that some brains could benefit from a little less order.    [italics mine]

I wonder if the aesthetic experience itself, when wholly engaged, can sometimes act like a drug on the art-viewer’s or art-maker’s being. When one reads the poem that rearranges one’s world, doesn’t it disrupt stereotyped, familiar, habitual patterns of thought? That’s what happens for me when I encounter great art of any kind. It is close to mystical.

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