01 · Molecules

Human chemical communication

Isolated a single-molecule human body-volatile chemosignal with no perceived odor (hexadecanal) and demonstrated its behavioral, physiological, and brain-activity effects, modulating human aggression with opposite-sign effects by sex.

Eight black-and-white frames of a woman bringing her hand to her face and nose

A $12 sensor

The field measured aggression with a button press: pressed or not pressed. To get a continuous signal inside an MRI scanner I built a pressure sensor for$12 (participants clench to express intensity) against the$2,000 off-the-shelf part. It isopen source, and the study it produced ran in Science Advances.

Sniffing the human body volatile hexadecanal blocks aggression in men but triggers aggression in women.Science Advances, 2021. First author. Patent (inventor): WO2021144792A1, commercialized through Moodify.

02 · Bodies

Subjective sleep quality from a consumer smartwatch

Whenever the outcome is a human experience, the person belongs in the model.

Subjective sleep quality is the thing clinicians actually care about and the thing no device measures: a watch records movement and heart rate, not whether you feel rested. We built a framework that combines continuous wearable physiology (sleep architecture, activity, HRV-derived stress) with static sociodemographic and personality features, and infers the rating at the individual level.

AUC 0.88 distinguishing extreme sleep-quality ratings.

Trained on the PerMed cohort: 4,794 participants,759K daily questionnaires,1.77M wearable-days over three years. End-to-end, from raw signal through modeling.

Passive and continuous assessment of subjective sleep quality using smartwatches.Hausner, O.*, Mishor, E.*, Reiner, M., Shmueli, E. Under review, Communications Medicine. *equal contribution.

03 · Behavior

Product behavior at scale

Idea-to-Product

Co-founded and co-built an AI-native decision-support platform that applies scientific reasoning to early-stage company building. Led product development end-to-end: from founder interviews, product strategy, and reasoning-framework design to implementation, evaluation, and launch.

idea-to-product.com · 2025–present

Publications

* equal contribution · Google Scholar