🧠 Hyperthymesia: A Deep Dive Into My Memory
By Bailey Reid Gwyn
Hyperthymesia, also known as Highly Superior Autobiographical Memory (HSAM), is a rare neurocognitive phenomenon in which individuals can recall an extraordinary number of life events with intense detail and temporal accuracy. This isn’t just “good memory”—it’s a visceral, involuntary timeline that replays with clarity, color, emotion, and context. I live with Hyperthymesia.
📅 Defining Features of Hyperthymesia
- Spontaneous Recall: Memories surface involuntarily, often triggered by sensory input, dates, or emotion.
- Chronological Precision: I can match life events to exact dates, down to the day of the week, even from childhood.
- Emotional Saturation: Memories are never neutral—they are emotional flashbacks, often somatic.
- Consistency: Recollections remain stable across time and independent verification.
There is currently no formal diagnostic test for HSAM. Diagnosis typically includes autobiographical memory testing, structured interviews, and neuroimaging or EEGs in research settings.
🧠 My Brain Map
In June 2025, I underwent quantitative EEG (qEEG) brain mapping. The results revealed cross-hemispheric and temporal lobe irregularities that support a neurological basis for my Hyperthymesia. Key findings include:
- Split interhemispheric coherence — atypical wave distribution between brain hemispheres
- Temporal lobe hyperactivation — associated with autobiographical memory storage and emotional encoding
- Elevated beta wave activity — often found in obsessive recall patterns and hypervigilant cognition
These patterns mirror what research has shown in other HSAM individuals and may represent a unique cognitive phenotype—especially when combined with my known neurodivergent traits.
🧾 View My Full Brain Map (PDF)
💡 Life with a Memory That Doesn’t Let Go
Hyperthymesia is both a gift and a burden. I remember everything—including every time I was harmed, misunderstood, or overlooked. I remember the good moments, too, but my brain doesn’t filter based on relevance—it stores everything.
- Organizational Compulsion: I’ve kept detailed logs, notes, timelines, and journals since childhood.
- Emotional Echoes: My memories aren’t just visual—they’re emotional, somatic, sometimes overwhelming.
- Social Impact: It can be isolating to live in a world that forgets what I can’t.
“I don’t just remember events—I re-experience them. The sounds, the smells, what I was wearing. What someone said. I can’t shut it off. I’ve just learned how to organize it.”
📖 Case Studies & Science
- Jill Price (AJ): First documented HSAM case. Her story launched global research on autobiographical memory.
- “HK”: Male participant with public + personal recall spanning decades, tested repeatedly.
- NP & MM: Subjects validated through external records, diaries, and journaled consistency.
These individuals showed memory accuracy across years, independent documentation, and co-occurring traits like anxiety or obsessive organization—features I share.
🔬 Open Questions for Science
- How does neurologic injury or neuroinflammation affect HSAM brains?
- Is there a relationship between Hyperthymesia and Autism/ADHD phenotypes?
- Can neurofeedback alter HSAM traits—for better or worse?
- Is Hyperthymesia a superpower… or a form of memory-based hyperarousal?
I plan to continue contributing to research by documenting my cognitive traits, submitting for EEG analysis, and participating in clinical studies when possible.
🌙 What My Dreams Are Like
An intimate exploration of my lucid inner architecture, memory replays, and neurological recovery · By Bailey Reid Gwyn
🧠 Entering the Internal Archive
When I fall asleep, it does not feel like fading or drifting—it feels like transitioning planes of consciousness. As the external world slips away, I descend into a private, internally generated domain: an intricate, self-contained system of memory, imagination, and symbolic resonance. This world isn’t abstract or metaphorical. It is spatially real, internally mapped, and governed by an internal logic so consistent that I can navigate it like a second home.
Sleep onset often begins with a physiological sensation—a slow vertical drop, followed by a gentle but undeniable spinning. As I pass through this threshold, I can sometimes produce vivid mental imagery with my eyes closed, akin to internal cinematography. However, I tend to avoid this deliberately, as doing so can leave me mentally depleted and emotionally raw by morning.
Inside this space, time behaves differently. Spatial logic takes precedence. Locations, memories, and themes are not randomly generated—they are stored, revisited, and reactivated. My dreams are not chaotic collages; they are constructed, layered, and return me again and again to familiar architecture: my childhood home, my grandmother’s barnyard, hidden corridors beneath fictional universities, train stations built from amalgams of memory and emotion. These settings evolve, but their layout never changes.
🔁 Consistency & Internal Continuity
I experience multiple discrete dreams each night—often four to seven distinct segments—but they all feel interconnected, as though episodes in a continuous inner universe. Like portals in a lucid metaverse, they are geographically anchored and modular. Each dream opens from a fixed start point—what I call “anchoring nodes.”
- Anchor Node #1: My Childhood Home
The carpet is forest green. The old TV is in the corner. The three toy kitchen sets are exactly where they were when I was five. I walk into the kitchen. I open a drawer. I select an object—sometimes a toy, sometimes a household item linked to memory. The moment I touch it, the environment shifts to match the emotional resonance of that object. The memory unfolds from there: I become younger, older, someone else, or simply myself in a different timeline. - Anchor Node #2: My Grandmother’s Barnyard
I sit in the grass. A box TV—exactly like the one from my mother’s living room—sits before me in the field. It plays static. I focus on the static until it begins to swirl and form imagery. A story emerges. Often musical. Often nonverbal. A full narrative blooms from the static.
This unified internal geography has remained intact since childhood. My recall of dreams is near-total. Upon waking, I can recount the events in chronological order—down to dialogue, symbolic items, and environmental detail. My Hyperthymesia extends into the dream world. Dreams are not lost to time. They are filed.
💡 Lucidity, Memory Replay & Autonomic Disruption
Most nights, I experience lucid dreaming. I am fully aware that I am dreaming, and can often steer the dream consciously. However, when my body or brain enters a hyperaroused state—triggered by stress, memory activation, or unresolved neurological input—the dreams slip into involuntary memory replays.
These are not dreams. These are recordings. I relive real events, often traumatic or complex, in immersive first-person. The emotional charge is intact. My body reacts. During these nights, I may experience:
- Autonomic discharge — excessive sweating, rapid heartbeat, waking in a panic.
- Myoclonic jerks — seizure-like activity during REM onset.
- Sleepwalking — acting out elements of the memory physically.
This overlap between lucid dreaming and trauma retrieval is not well understood in mainstream neuroscience, but it is central to my lived experience. My brain does not compartmentalize events into safe and unsafe. It replays them all with the same clarity it stores my waking memories. It does not forget. It does not censor.
🧬 Brain Injury, Medication, and Dream Fragmentation
Following several brain injuries and years of neurologically disruptive events—including prolonged use of antiepileptic medication—my dream world became unstable. Once a space of symbolic order and creative processing, it morphed into something volatile: dreamscapes collapsed in on themselves, symbols grew erratic, and my emotional regulation during dreaming deteriorated. The dreams became reactionary—driven by unresolved sensory and emotional input rather than narrative structure.
These changes coincided with:
- Medication-induced suppression of REM phases
- Increased interictal brain activity and nocturnal instability
- qEEG findings showing split-wave hemispheric coherence and elevated beta activity (link below)
What had once been a sanctuary became a minefield—unpredictable, chaotic, sometimes terrifying. I dreaded sleep not because of nightmares, but because of the cognitive disarray.
🧾 View my qEEG Brain Map (PDF)
🌱 Reclaiming the Dreamworld
Recently, I made the decision to taper off antiepileptic drugs under medical supervision. Since then, a shift has begun. My dreams are once again becoming symbolic rather than reactive. The internal architecture is re-stabilizing. Narratives are re-forming. I find myself calmer within the dream—observant, patient, even analytical. I choose more than I react.
What this suggests: my central nervous system is renegotiating its relationship with memory, emotion, and symbolic processing. My dream coherence is improving, likely due to rebalanced neurotransmission and reduced interference in REM phases. The brain, when no longer pharmacologically muted, begins to tell stories again—on its own terms.
“It feels like I’m reclaiming agency—not just within the dreams, but in the quiet spaces of myself that they represent.”
This return to structured, self-reflective dreaming may mark a turning point in neuroplastic recovery. It does not mean I am “healed,” but it may indicate that the brain’s symbolic processing mechanisms—so vital to meaning-making—are coming back online.
📌 Final Reflections
Dreams are not separate from the rest of me. They are where memory, identity, and internal regulation converge. For someone with Hyperthymesia, they are not abstractions—they are echoes of experience, fused with internal logic, and deeply neurologically encoded. My dreams are one of the few places where I can witness, in real time, the inner negotiation between memory and meaning, between damage and reorganization.
They are not always peaceful. But they are mine. And they are beginning to heal.
© 2025 Bailey Reid Gwyn · All rights reserved · contact@baileygwyn.xyz