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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.

Try plethysmography research tools in the free AcqKnowledge Demo

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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

VPG data

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...

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...

carotid to femoral pulse wave velocity data

Carotid to Femoral Pulse Wave Velocity (cfPWV) measurement

Classic (gold standard) Carotid to Femoral Pulse Wave Velocity (cfPWV) measurement. Pulse Transit Time (PTT) is calculated by referencing both carotid and femoral pressure rise to 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 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...

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

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Application Notes

Knowledge Base

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AcqKnowledge Workflow Action examples

Workflow Automation Licenses

Workflow—A Great Tool for Every Researcher! Automate AcqKnowledge with New Workflow Tool New automation tool significantly saves time and improves consistency with standardized procedures Workflow’s drag-and-drop interface allows you to automate and repeat the signal-conditioning and processing steps your protocol requires in an easy-to-use process without programming or scripting knowledge. Batch process multiple files with confidence […]

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Latest News

New Citations | BIOPAC in ANS Research

The autonomic nervous system (ANS) is responsible for regulating the functions of all the body’s organs. Take a look at this month’s citations to see how to apply BIOPAC’s tools and learn techniques for ANS research… Comparable responses to a wide range of olfactory stimulation in women and men. Scientific Reports, 13(1), 9059. Lillqvist, M., Claeson, […]

Electrocardiography Guide Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

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