Journal: Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

Article Title: Transcutaneous Cervical Vagus Nerve Stimulation Inhibits the Reciprocal of the Pulse Transit Time’s Responses to Traumatic Stress in Posttraumatic Stress Disorder

doi: 10.1109/EMBC46164.2021.9630415

Figure Lengend Snippet: (Left) Transcutaneous cervical vagus nerve stimulation (tcVNS) non-invasively targets the vagus nerve with electrical stimulation, which has been found to modulate cardiovascular markers. The putative mechanism of action involves tcVNS-induced afferent signaling, followed by efferent modulation of peripheral physiology. (Right) Conforming to a double-blind, sham-controlled study, active or sham stimulation is delivered to the left cervical vagus. The electrocardiogram (ECG), seismocardiogram (SCG), and photoplethysmogram (PPG) are sensed at the locations indicated.

Article Snippet: ECG, PPG, and SCG signals were measured at the locations shown in (right) from subjects in a supine position using the Biopac RSPEC-R, Biopac PPGED-R (Biopac Systems, Goleta, CA, USA), and a low-noise 356A32 accelerometer (PCB Piezotronics, Depew, NY), respectively.

Techniques:

Journal: Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

Article Title: Transcutaneous Cervical Vagus Nerve Stimulation Inhibits the Reciprocal of the Pulse Transit Time’s Responses to Traumatic Stress in Posttraumatic Stress Disorder

doi: 10.1109/EMBC46164.2021.9630415

Figure Lengend Snippet: Using state-of-the-art quality assessment and feature extraction algorithms, the electrocardiogram (ECG), seismocardiogram (SCG), and the photoplethysmogram (PPG) were processed to obtain quality R peak to R peak intervals (RR intervals), SCG segments corresponding to heart beats (i.e., SCG beats), and PPG beats. Si and Pi correspond to the sets of beats detailed in the text.

Article Snippet: ECG, PPG, and SCG signals were measured at the locations shown in (right) from subjects in a supine position using the Biopac RSPEC-R, Biopac PPGED-R (Biopac Systems, Goleta, CA, USA), and a low-noise 356A32 accelerometer (PCB Piezotronics, Depew, NY), respectively.

Techniques: Extraction