Nonverbal Autism
Nonverbality and the Development of NeuroToggle® and BioToggle®
How One Discovery Expanded Into Multiple Frameworks
Kimberly Kitzerow’s work began after her nonverbal autistic daughter could not blow out a candle on her fourth birthday cake. That observation shifted the question from behavior to physiology and eventually led to the development of NeuroToggle® and BioToggle®. This page explains the original discovery, what it changed about the understanding of nonverbal autism, how autism traits and comorbid traits became delineated, and how each framework emerged from that process.
From Silence to Speech
The story behind the discovery that led Kitzerow toward speech-motor pathways, neuroplasticity, and systems biology.
Speech Motor Pathways
Explore how speech depends on coordinated speech-motor pathways that connect language to motor planning.
Recent Evidence Convergence
Explore newer research involving motor circuitry, neuroplasticity, cortical connectivity, and communication outcomes.
What Was the Original Discovery?
The Discovery Was About Speech Access
The discovery began when Kitzerow’s nonverbal autistic daughter could not blow out a candle. Blowing out a candle required motor output she could not yet physically access. That shifted the question away from “Why won’t she talk?” and toward “What systems are preventing speech access?”
How the Work Began
Learn how Kitzerow’s daughter’s progress led to the development of NeuroToggle® and BioToggle®.
For Parents of Nonverbal Children
A guide explaining speech access, communication pathways, AAC, regulation, and NeuroToggle® as one possible instructional framework.
Speech Motor Pathways
Explore how speech depends on coordinated language and motor circuitry required for speech access.
The Systems Required for Speech Production
Speech Requires Language and Motor Circuit Coordination
Speech depends on language circuits and motor circuits developing, functioning, and coordinating continuously. If coordination is disrupted, speech may become physically obstructed even when comprehension, language, and communicative intent are present.
Speech Mechanisms Delineated
The candle discovery shifted attention toward the speech mechanisms required to physically produce speech.
Speech Mechanism Obstruction
If language circuits and motor circuits do not develop, function, or coordinate appropriately, speech output may become physically obstructed.
NeuroToggle® Role
NeuroToggle® is a neuroplasticity-informed pedagogy for targeting the neural circuits behind any skill or behavior, including speech, motor planning, sensory regulation, communication, learning, and adaptive development.
Critical Timing Windows
Missing critical developmental time periods, including linguistic developmental windows, may alter neural pathway development and contribute to neurodevelopmental impacts including language deprivation syndrome.
What Did That Change About Nonverbal Autism?
Nonverbality Was Not One Flat Autism Trait
Once speech access was examined physiologically, nonverbality could no longer be treated as one universal autism feature. The same outward presentation could emerge through different mechanisms, meaning nonverbality itself required delineation.
Structural or Injury-Based
Speech mechanisms may be impaired by acute injury, early-life trauma, forceps-related damage, nerve disruption, or loss of pathway integrity.
Developmental Dysregulation
Speech pathways may develop under altered biological conditions involving nervous system regulation, developmental timing, and pathway formation.
Situational Inhibition
Speech access may shut down in selective mutism-type states, overload, emotional intensity, unfamiliar settings, or stress physiology.
Realizing Autism Traits and Comorbid Traits Require Delineation
The Same Presentation Does Not Necessarily Reflect the Same Mechanism
After separating nonverbality from autism itself, Kitzerow began recognizing that many autism-associated traits and comorbidities were being grouped together despite likely involving different underlying mechanisms. Nonverbality, hypotonia, sensory dysregulation, sleep disruption, anxiety, gut dysfunction, immune shifts, motor differences, and regulation changes could not simply be treated as one undifferentiated condition. They required delineation by pathway, mechanism, developmental timing, and physiological involvement.
Using NeuroToggle® to Target Skills and Behaviors
Skills and Behaviors Were Reframed as Neural Circuits
After separating nonverbality from autism traits, Kitzerow applied the same reasoning to skills and behaviors more broadly. NeuroToggle® proposes that cognitive, sensory, motor, communication, academic, and adaptive skills depend on neural circuitry and that those circuits can change through targeted instruction and experience. Speech is one example, not the limit of the framework.
NeuroToggle®
A neuroplasticity-based pedagogy connecting targeted instruction and experience to cognitive, sensory, motor, communication, academic, and adaptive neural circuit development.
Neuroplasticity Principles
Introduces the neuroplasticity concepts and explains why neural circuit development matters for neurodivergent learning.
The NeuroToggle® Framework
Presents the full NeuroToggle® framework for building, strengthening, expanding, and timing neural circuits through pedagogy.
Understanding Comorbid Traits Through BioToggle®
The Framework Expanded Into Temporally Regulated Systems
As autism traits and comorbid traits became increasingly delineated, Kitzerow began organizing the body into broader categories of regulatory stress-response systems. BioToggle® became the framework for understanding how genetically locked, chronically activated, or situationally activated regulatory systems may shift biological prioritization over time. Within this model, prolonged activation may disrupt temporally regulated development and function across multiple physiological systems.
BioToggle®
A framework organizing regulatory stress-response systems, adaptive physiological shifts, and developmental prioritization.
Autism and Comorbidities
Explore the delineated outcomes of BioToggle® mechanisms across autism and comorbid traits.
Jigsaw Puzzle Methodology
A systems-analysis methodology for comparing biomarkers, pathways, and physiological mechanisms.
Research Began Moving Toward the Same Mechanisms
After the 2020 Discovery and 2022 Dissemination
Following Kitzerow’s initial discovery in 2020 and public dissemination beginning in 2022, increasing amounts of autism research began moving toward motor circuitry, cortical connectivity, neuroplasticity, developmental timing, communication-related pathway regulation, and systems-level physiological mechanisms.
Recently Released Evidence
Explore newer studies involving motor-language circuitry, neuroplasticity, cortical connectivity, and communication outcomes.
Phenotypes Study
Explore the overlap between Kitzerow’s framework and newer phenotype-driven autism pathway research.
3-Hit Model
Explore converging evidence involving developmental timing, regulation, stress physiology, and autism-related biology.