INTRODUCTION: While ADHD is typically defined by attention deficits, the neural processes causing fragmented knowledge acquisition—marked by unstable concentration and non-linear memory encoding—remain poorly understood. This instability creates significant barriers in learning environments, yet the underlying physiological mechanisms remain under-examined.

AIM(S): This study investigates how a potential lack of physiological stabilization might prevent continuous information encoding. The primary aim is to evaluate whether learning difficulties in ADHD arise from a failure in network switching mediated by interoceptive signals.

METHOD(S): This analysis synthesizes neurobiological findings from the Triple Network Model with established behavioral markers of intra-individual variability (IIV). The research examines functional crosstalk between the Default Mode Network (DMN), Central Executive Network (CEN), and Salience Network (SN), focusing on how the insular cortex may facilitate network switching through interoceptive pathways.

RESULTS: This synthesis suggests that learning instability is driven by a "network interference" mechanism. Failing to suppress DMN activity during task-positive states appears to disrupt the CEN’s capacity for stable information encoding. This interference aligns with high IIV, serving as a statistical marker for neural instability. A key insight is identifying potential insular dysfunction as a "switching failure" caused by diminished precision in interoceptive signals—the "biological anchor."

CONCLUSIONS: These barriers likely stem from a synergy between unstable networks and weak embodied coupling. Rather than focusing only on top-down control, this work emphasizes the potential role of physiological grounding. Proposed strategies include segmenting material and utilizing interoceptive mindfulness to provide the somatic feedback necessary for sustained cognitive stability.

FINANCIAL SUPPORT: None