Interoceptive Mindful Breathing: The ISAAA Model for Attentional–Autonomic Alignment
Hin Hung Sik, Sabin Maharjan, Junling Gao
Mindfulness August 20, 2026 DOI: 10.1007/s12671-026-02945-0 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Theoretical or philosophical paper Randomized Preregistered Peer reviewed |
|---|---|
| Key points | Argues that mindful breathing should proceed in two phases—passive observation before breath modulation—and that premature cortical control can disrupt autonomic rhythms, contributing to attentional–autonomic misalignment and interoceptive prediction error. |
Abstract
Abstract Objectives Mindful breathing is widely practiced for health, well-being, and contemplative development, yet novices often experience confusion, tension, or frustration when instructions lack neurophysiological clarity. This theoretical paper introduces the Interoceptive Sensitivity for Attentional–Autonomic Alignment (ISAAA) model as a structured, neurophysiology-informed framework for understanding and addressing these difficulties.
Method: The ISAAA model was developed through an interdisciplinary synthesis of respiratory physiology, affective neuroscience, active interoceptive inference, neurovisceral integration, and the early steps of the Ānāpānasati Sutta. Its core constructs are operationalized using measures including the Multidimensional Assessment of Interoceptive Awareness-2 (MAIA-2), Toronto Mindfulness Scale, heartbeat-counting tasks, respiratory-adjusted vagal heart-rate variability, respiratory sinus arrhythmia, and EEG–ECG brain–heart coherence. Preregistration: This study is not preregistered.
Results: ISAAA conceptualizes mindful breathing as a two-phase process: first, establishing a metacognitive platform for passive, non-interfering observation of natural autonomic breathing; and second, introducing skillful, minimal-effort breath modulation after interoceptive sensitivity and attentional–autonomic alignment have developed. The model proposes that premature top-down cortical control can disrupt autonomic respiratory rhythms, contributing to attentional–autonomic misalignment and interoceptive prediction error. Four falsifiable predictions are specified to guide future randomized, dismantling, and feasibility studies.
Conclusions: By integrating Buddhist contemplative instructions with contemporary neurophysiology, the ISAAA model provides a scalable instructional framework and a testable account of how voluntary attention and autonomic processes may become progressively aligned. Its neurophysiological formulation may help practitioners refine mindful breathing, particularly during the early stages of practice.