Jack Feldman

Overview

Jack Feldman is presented in the bounded source as a UCLA neurobiology professor whose laboratory helped establish the brainstem circuitry that generates breathing rhythm.

Current Profile

In Breathing for Mental & Physical Health & Performance | Dr. Jack Feldman, Feldman explains breathing as both an automatic life-support process and an unusually accessible route for voluntary influence over brain and body state. His work centers on the pre-Botzinger complex, a second oscillator involved in active expiration, sigh-generating circuits, ascending respiratory signals, and experimental tests of how altered breathing changes arousal or fear-related behavior.

His public stance is notably cautious. He treats several popular breathwork ideas as plausible, describes his own box-breathing practice without presenting it as optimized, and repeatedly calls for controlled human studies that compare patterns, durations, mechanisms, and outcomes.

Key Characteristics

• Studies the neural circuits that generate inspiration, active expiration, sighing, and breathing-related state changes.
• Connects brainstem rhythm generation to respiratory muscles, gas exchange, lung mechanics, and ascending brain pathways.
• Uses animal circuit manipulation to test causal mechanisms while distinguishing those findings from human treatment evidence.
• Treats breathwork effects as potentially multi-pathway rather than attributing them to one universal mechanism.
• Communicates practical breathing ideas with explicit uncertainty about optimal protocols and clinical translation.

Evidence

• Rhythm generation - Breathing for Mental & Physical Health & Performance | Dr. Jack Feldman presents Feldman’s foundational work on the pre-Botzinger complex and later work on active-expiration circuitry.
• Sigh circuitry - Breathing for Mental & Physical Health & Performance | Dr. Jack Feldman describes bombesin-related signaling, targeted cell ablation, and the unresolved interpretation of deteriorating animal health after sigh loss.
• Brain-state pathways - Breathing for Mental & Physical Health & Performance | Dr. Jack Feldman links respiration to locus-coeruleus projections, vagal input, olfactory airflow, carbon dioxide, pH, and voluntary control.
• Translational caution - Breathing for Mental & Physical Health & Performance | Dr. Jack Feldman separates mouse fear-conditioning results and plausible mechanisms from controlled human breathwork evidence.
• Practical stance - Breathing for Mental & Physical Health & Performance | Dr. Jack Feldman records a simple personal box-breathing practice while emphasizing protocol-comparison gaps.

Qualifications

This profile is bounded to one structured podcast summary rather than a complete biography, publication review, or independent assessment of Feldman’s laboratory record. The source omits full study methods, sample sizes, effect magnitudes, and replication status. Its breathwork, neurodegeneration, episodic-hypoxia, cognition, and magnesium-threonate discussions are research or personal-practice context, not individualized medical guidance.

What Changed

• Created a source-backed profile for the episode’s respiratory-neuroscience guest.

Relationships

• Huberman Lab - show hosting the bounded conversation.
• Andrew Huberman - interviewer translating Feldman’s work for a general audience.
• Respiratory Rhythm Generation - central brainstem-circuit field represented in the episode.
• Physiological Sigh - homeostatic breathing pattern and experimental circuit branch of Feldman’s work.
• Respiratory Gas Balance and Breathwork Safety - physiological context that constrains breathwork interpretation.
• Inhalation, Arousal, and Learning - neighboring respiratory-to-brain pathway discussed in the interview.