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Deep breath and PPG signal flattening

Taking a deep breath and then holding it increases intrathoracic pressure (pressure inside the chest cavity), which compresses veins returning blood to the heart causing a temporary decrease in venous return and cardiac output, and in turn, peripheral circulation. The reverse occurs after releasing the breath after a deep inhalation.

Associated Applications

Associated Application Notes

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BioShirt wireless ECG and respiration

BioNomadix BioShirt

Smart shirt simultaneously acquires ECG and Respiration data while subjects roam freely The lightweight, comfortable BioNomadix BioShirt contains a respiration sensor and fabric electrodes to wirelessly record both respiration and ECG while ambulatory subjects move freely and perform tasks in short or long-term studies, in the lab, or in the real world. The shirt connects to a wireless BioNomadix BN-RSPEC Respiration […]

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T4 Conference Poster Presentations

Research posters presented at BIOPAC’s T4 physiology conference (Tools, Trends,  Techniques, and Technology) exhibited leading physiological research utilizing BIOPAC’s technology. Research posters presented unique advances in neuromarketing and health research. The T4 conference, held at UCSB Monday, July 24, 2017 through Wednesday, July 26, 2017, showcased the latest trends in the Tech industry’s physiological research. […]

BIOPAC on Good Morning America | Anxiety and Excessive Cell Phone Use

ABC News | Good Morning America | Excessive Cell Phone Use JULY 31, 2017 | Excessive cell phone use may cause anxiety, experts warn BIOPAC user Nancy A. Cheever, Ph.D. from California State University, Dominguez Hills was featured on Good Morning America. Her study investigated whether spending too much time on your phone may be causing people to feel […]

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