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Plethysmography

Complete Plethysmography Research Solutions

Real-time Pulse Transit Time and blood volume measurements

Advanced Plethysmography hardware/software combinations support wide variety of experiments

AcqKnowledge PPG and ECG data for PTT

PPG Recording & Automated Analysis

Record and analyze plethysmography data from a variety of body locations. Record pulse rate from the fingers, ears or toes for heart rate calculation or pulse transit time studies. Look at variations in appendage size or blood volume changes to regions of the body to examine venous capacitance, outflow, and compliance measures. For indirect approximation of blood pressure changes, record the pulse signal while occluding and releasing the brachial artery. Automated routines are available for cycle/peak detection and rate calculation to measure the area under the pulse waveform for an indication of blood volume.

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Sexual Arousal Studies

Monitor vaginal plethysmography (TCIPPG1), penile plethysmography (TCI111/112), temperature, electrodermal activity (GSR), respiration, pulse, others

Indirect Blood Pressure Recordings

Record indirect blood pressure and continuous noninvasive blood pressure.

Blood Volume

Measure variations in blood flow indirectly via changes in opacity with the plethysmogram transducer (TSD200).

Application Starter Hardware  

Hardware Packages   |   Plethysmography

Hardware Bundles are complete solutions for the specified application. Choose your preferred platform and bundle, then click "Request Pricing" to request an estimate, add/remove items, or complete purchase. If you have questions about specific items, click through to the product web page for details and specifications, or contact your Local Sales contact.

Wired

Wireless

MRI

Animal

Details

Derive BPM

A very reliable BPM subject data can be collected with the PPG100C-MRI photoplethysmogram amplifier and associated PPG transducer. It is generally much easier to perform a PPG measurement on a subject, as all that’s required to perform a PPG is an accessible finger or toe. Only one attachment point is required to perform a BPM measurement, using PPG, versus three attachment points (via electrodes), using ECG. Rate (BPM) can be derived from the PPG signal, using a standard or MRI Smart amplifier signal. The data is this graph illustrates an overlap comparison of the rate (BPM) data derived from a PPG100C-MRI amplifier as compared to BPM data derived from a ECG100C-MRI amplifier. Both the PPG data and ECG data were collected, on the same subject, at the same time. Note that the derived BPM results are very similar, excepting one point which is a result of switching artifact when the 10 Hz LP filter on the PPG100C-MRI amplifier was switched to 3 Hz LP.

PPG - derive rate (BPM)

Advanced Features Spotlight

Plethsymography VPA VPV

Blood Volume

Measure variations in blood flow indirectly via changes in opacity with the plethysmogram transducer for tethered, wireless and MRI applications. Typically, a blood volume pulse More...

Arterial Flow vs Venous Return

Regional Blood Flow

To analyze regional blood flow, occlude the venous return with the blood pressure cuff (TSD120) and measure the swelling of the distal portion of the More...

AcqKnowledge PPG and ECG data for PTT

Pulse Transit Time (PTT), Pulse Wave Velocity (PWV) and Pulse Wave Amplitude (PWA)

Pulse Transit Time (PTT) is the time it takes the Pulse Pressure (PP) waveform to propagate through a length of the arterial tree. The pulse More...

Indirect Blood Pressure

Indirect Blood Pressure Recordings

Record indirect blood pressure with a blood pressure cuff (TSD120) and a contact microphone (TSD108) placed over the brachial artery. Increase cuff pressure to occlude the More...

Sexual Arousal Studies

Sexual Arousal Studies

Monitor a variety of physiological sexual arousal parameters from male and female subjects including vaginal plethysmography (VPG) using a TSDVPG, penile plethysmography using a TSD205, More...

Videos

AcqKnowledge Find Cycle Peak Detector - Part 1

AcqKnowledge Find Cycle Peak Detector - Part 2

AcqKnowledge Find Cycle Peak Detector - Part 3

AcqKnowledge Find Cycle Peak Detector - Part 4

AcqKnowledge Find Cycle Peak Detector - Part 5

AcqKnowledge Find Cycle Peak Detector - Part 6

BIOPAC NIBP-MRI: How to Apply Sensor to Brachial Artery

Support

Application Notes

Knowledge Base

Spotlight On
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Latest News

News Citations—Respiration and Cardiovascular Activity

BIOPAC provides software and hardware that allow for research teams to record and analyze respiration activity in physiological experimentation. Here are a few notable studies in monitoring respiration and cardiovascular activity. The coupling between peripheral microcirculation and slow breathing: The purpose of this study was to investigate the coupling of breathing movements and microcirculatory blood […]

BIOPAC on 60 Minutes | Brain Hacking with Anderson Cooper

CBS News | 60 Minutes | Brain Hacking APRIL 9, 2017| Why can’t we stop looking at our smartphones? And are the designers of the apps and content on them using brain science to keep us hooked? Anderson Cooper reports.   BIOPAC users Larry D. Rosen, Ph.D. and Nancy A. Cheever, Ph.D. from California State […]

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