Sensory Processing
Not fussiness or imagination, but a nervous system that receives sensation at a different volume or texture. Stigma often confuses intensity with exaggeration.
What actually is it?
Sensory Processing Disorder occurs when the brain's thalamus and sensory cortex interpret stimuli atypically -- some inputs arrive amplified to painful levels while others barely register, creating a fragmented sensory experience that is neurological, not behavioral. Approximately 5% of the population is clinically affected, with rates far higher among autistic individuals (up to 90%) and those with ADHD (40%).
Living with SPD means navigating a world designed for a different nervous system, and the adaptations built along the way often produce remarkable perceptual abilities.
You may meet about 80,000 people in your life.
You may know about ... of them.
Of the people around you, how many might have sensory processing disorder?
Pick the closest guess.
It's a difference in how the brain is wired, not a character flaw.
fMRI studies reveal 18% greater somatosensory cortex activation in tactile over-responsivity, and DTI imaging shows measurable white matter differences in sensory integration tracts -- confirming SPD is neurological, not behavioral.
— NeuroImage: ClinicalHow it looks vs. How it feels
The lived experience behind the observed behavior
What others see
Covering ears at sounds others ignore
On the inside
The Sensory Flood
Too many inputs at once and I can't filter any out. Everything arrives at equal volume - sirens, tags, lights, all screaming. My thalamic gating system is wide open and every stimulus demands attention simultaneously.
What others see
Tripping or bumping into objects frequently
On the inside
The Body Map Blur
I lose track of where my body ends and space begins. My proprioception is unreliable, so I collide with things that should be obvious. The cerebellum's map of my body in space has gaps.
What others see
Constant rocking, spinning, or fidgeting
On the inside
The Regulation Seek
This rocking isn't a habit - it's medicine. The rhythmic input recalibrates my nervous system when everything else is too much or too little. Vestibular and proprioceptive input grounds me when the world is overwhelming.
What others see
Extreme food texture preferences or refusals
On the inside
The Texture Wall
That food's texture triggers my gag reflex before I can reason with it. It's not pickiness - it's a sensory alarm I can't override. My somatosensory cortex fires 18% harder than average at tactile input.
What others see
Freezing or shutting down in busy environments
On the inside
The System Crash
Too much input and my brain stops processing. I freeze, go blank, and the world becomes distant until the overload passes. It's a protective shutdown - the nervous system's circuit breaker tripping to prevent damage.
What others see
Seeking deep pressure, tight hugs, or weighted blankets constantly
On the inside
The Pressure Hunger
I crave being squeezed, pressed, weighted down. Deep pressure is the only input that quiets my nervous system. Without it, I feel untethered—like my body doesn't know where it is in space. The proprioceptive system needs heavy input to feel grounded.
What others see
Covering ears at sounds others ignore
On the inside
The Sensory Flood
Too many inputs at once and I can't filter any out. Everything arrives at equal volume - sirens, tags, lights, all screaming. My thalamic gating system is wide open and every stimulus demands attention simultaneously.
What others see
Tripping or bumping into objects frequently
On the inside
The Body Map Blur
I lose track of where my body ends and space begins. My proprioception is unreliable, so I collide with things that should be obvious. The cerebellum's map of my body in space has gaps.
What others see
Constant rocking, spinning, or fidgeting
On the inside
The Regulation Seek
This rocking isn't a habit - it's medicine. The rhythmic input recalibrates my nervous system when everything else is too much or too little. Vestibular and proprioceptive input grounds me when the world is overwhelming.
What others see
Extreme food texture preferences or refusals
On the inside
The Texture Wall
That food's texture triggers my gag reflex before I can reason with it. It's not pickiness - it's a sensory alarm I can't override. My somatosensory cortex fires 18% harder than average at tactile input.
What others see
Freezing or shutting down in busy environments
On the inside
The System Crash
Too much input and my brain stops processing. I freeze, go blank, and the world becomes distant until the overload passes. It's a protective shutdown - the nervous system's circuit breaker tripping to prevent damage.
What others see
Seeking deep pressure, tight hugs, or weighted blankets constantly
On the inside
The Pressure Hunger
I crave being squeezed, pressed, weighted down. Deep pressure is the only input that quiets my nervous system. Without it, I feel untethered—like my body doesn't know where it is in space. The proprioceptive system needs heavy input to feel grounded.
While occupational therapy increases gray matter in the supramarginal gyrus by 7% and improves daily functioning, adult neuroimaging confirms persistent structural differences in thalamocortical pathways that represent lifelong neural wiring, not a curable condition.
— NeuroImage: Clinical
