Perception, Energy, and the Invisible Landscape of Healing
The Idea That Life Moves Through More Than Flesh
Long before modern medicine learned to read the body through tissue, chemistry, and electrical signaling, older healing systems described something else moving through it — a subtle vitality shaping health, perception, and awareness itself. The names for this vitality differ by tradition, and so do the systems built around it. But a similar intuition keeps resurfacing across very different cultures and centuries: that a human being is not only a mechanism, and that attention itself changes what is felt, sensed, and known.
This intuition shows up in Chinese medicine's Qi, in the prāṇa and nāḍīs of Indian yogic and Ayurvedic thought, and in the frameworks many Indigenous traditions use to describe spirit, breath, and relationship as forces that shape health. It shows up again, in a very different register, in Carlos Castaneda's mid-twentieth-century writing about perception and "non-ordinary reality" — writing that remains influential and deeply controversial in roughly equal measure, and worth examining honestly rather than either dismissed outright or absorbed uncritically. And it shows up, more cautiously, in contemporary nervous-system research trying to explain why so many people report sensations that don't map neatly onto conventional anatomy. Each of these deserves to be taken on its own terms, rather than folded into one another as though they were simply local dialects of the same underlying claim.
Different Words, Different Systems
It's tempting to treat all of this as one idea wearing different regional costumes — Qi here, prāṇa there, "energy" everywhere. That temptation is worth resisting. In Chinese medicine, Qi moves through the body along a defined system of channels, described in a textual lineage stretching back to the Huangdi Neijing, with its own diagnostic vocabulary of balance between yin and yang. In Ayurveda, prāṇa is carried through nāḍīs, subtle channels belonging to a yogic and philosophical lineage distinct from the physiological vessels described elsewhere in classical Ayurvedic texts. Indigenous frameworks for spirit, breath, and relational healing come from still other lineages entirely, shaped by their own cosmologies and histories, and shouldn't be absorbed into either of the above.
None of these systems are identical, even where they rhyme. Treating "Qi," "prāṇa," and a generic idea of "energy" as interchangeable synonyms erases exactly the textual specificity that makes each system legible on its own terms. Thailand's own sen lines make a useful test case: they borrow language from more than one of these traditions without fully belonging to any single one of them, and that hybrid quality is exactly what gets lost when every system gets folded into one all-purpose word. Precision here isn't pedantry. It's the difference between actually understanding a tradition and simply decorating a modern idea with an old-sounding word.
What the Nervous System Actually Shows
Modern science offers its own account of why people report sensations like tension, warmth, or release that seem to move through the body. The best-known recent attempt is Stephen Porges's polyvagal theory, introduced in 1994, which proposes that the vagus nerve organizes the body's shifts between states of safety, activation, and shutdown, and that a "social engagement system" tied to this nerve shapes calm, connection, and recovery from stress1. It has become widely influential among trauma therapists and somatic practitioners, offering a biological vocabulary for experiences that had previously been described mostly in psychological or spiritual terms — the felt sense of a nervous system settling, or bracing, translated into talk of vagal tone rather than talk of energy or spirit.
It has also become, in recent years, sharply contested within neuroscience itself. In a widely discussed 2023 review, psychophysiologist Paul Grossman and dozens of co-authors argued that several of the theory's core physiological claims are untenable and likely falsified, and neuroanatomists have specifically challenged its account of how vagal nerve fibers are distributed across species, along with its claims about which of those fibers are uniquely mammalian2. This doesn't mean the underlying experiences people describe aren't real, or that the vagus nerve is irrelevant to stress and safety. It means the specific scientific framework built around it is still a genuinely open, contested question rather than settled fact — a useful reminder that borrowing the language of neuroscience doesn't automatically make a claim more true than it was before.
Carlos Castaneda and the Line Between Philosophy and Ethnography
No modern writer occupies the territory between mysticism and academic anthropology more uneasily than Carlos Castaneda. In 1968, as a UCLA anthropology student, he published The Teachings of Don Juan, a first-person account of his apprenticeship to a Yaqui "man of knowledge" named Don Juan Matus, who taught him to perceive an unfamiliar, non-ordinary reality through the use of psychotropic plants. The book began as Castaneda's master's thesis, and it was received with real enthusiasm inside the academy — a senior UCLA anthropology professor wrote its foreword3. In 1973, UCLA awarded Castaneda a doctorate for a dissertation that closely mirrored his subsequent book, Journey to Ixtlan, submitted under a different title.
Doubts followed quickly, and they were substantial. Critics pointed out that Don Juan's teachings bore little resemblance to documented Yaqui religious practice, and that plants Castaneda described gathering in the Sonoran desert didn't actually grow there. Readers also noticed that Castaneda rendered pages of precise dialogue despite claiming Don Juan had forbidden him from using a tape recorder — an odd feat of memory across years of fieldwork4. In 1976, researcher Richard de Mille published Castaneda's Journey, cataloguing internal contradictions across the books' timelines that suggested the fieldwork, as described, could not have happened as claimed5. Castaneda's standing within academic anthropology declined sharply afterward, even as his popular readership continued to grow.
By the 1980s, Castaneda had settled fully into the role of spiritual teacher, leading a small, secretive group of mostly female devotees who studied a system he called Tensegrity. When he died of liver cancer in April 1998, the news was kept private for nearly two months before it became public. In the following weeks, several women from his inner circle disappeared; one was later confirmed dead, and the fate of the others has never been resolved3. It's a genuinely strange coda to a career that began as an anthropology thesis, and it's difficult to separate from how his later work is read.
None of this erases what Castaneda's writing actually accomplished. Concepts like "stopping the world," the assemblage point, and the deliberate cultivation of altered perception have shaped how several generations of readers talk about consciousness and awareness, regardless of their source. But it does mean his work asks to be read as something specific: an imaginative, philosophically serious meditation on perception, not a documentary record of an existing Yaqui healing tradition. Conflating the two does a disservice to both — to the real, distinct tradition Castaneda claimed to be reporting on, and to the genuinely interesting philosophical project his books actually represent.
Perception as the Common Thread
Set side by side, these traditions and controversies don't converge on a single measurable substance called energy. What they converge on is something narrower and, in a way, more interesting: a recurring claim that perception and physiology are far more entangled than a purely mechanical model of the body assumes. Older systems built entire diagnostic and therapeutic frameworks around teaching people to perceive differently in the first place — through breath, stillness, sound, and disciplined attention. Modern nervous-system research keeps circling back toward some version of that same claim, even where a specific theory like Porges's remains genuinely contested. The disagreement isn't really about whether attention changes experience. It's about how precisely to describe what's actually happening when it does — and, just as often, about which claims are being made honestly on that question and which are borrowing more authority than the evidence can support.
This piece continues directly from our exploration of Indigenous medicine and whole-person healing and plant medicine and the living world — each asking, in its own way, how perception and physiology stay entangled.
Sources
- ↩ "Polyvagal theory," Wikipedia, en.wikipedia.org/wiki/Polyvagal_theory.
- ↩ "Stephen Porges: The Neuroscientist Who Mapped Safety in the Nervous System," Get Therapy Birmingham, gettherapybirmingham.com.
- ↩ "Carlos Castaneda," Wikipedia, en.wikipedia.org/wiki/Carlos_Castaneda.
- ↩ "Did Carlos Castaneda hallucinate that stuff in the Don Juan books or make it up?" The Straight Dope, straightdope.com.
- ↩ "Castaneda Book Timelines & Inconsistencies," Sustained Action, sustainedaction.org.