CNAP Noninvasive Blood Pressure Technology – An Overview
The interaction of an easy-to-use finger sensor with unique control loops and algorithms as well as with NBP provides high accuracy of the BP signal – equivalent to invasive arterial line.
Practical Tips for Recording Physiological Data in MRI
The MRI system incorporates a VERY strong magnetic field and both emits and records radio frequency (RF) energy. This has impacts on subject and experimenter safety and on data accuracy.
Signal Artifact Associated with MRI
By Alan Macy, BIOPAC Systems, Inc. When performing MRI and simultaneously recording time-series physiological data, there are two basic types of artifact associated with MRI processes. The first type of artifact is associated with the presence of the large constant...
Impedance Cardiography
By Alan Macy, BIOPAC Systems, Inc. ICG is a measurement method that is primarily used to determine aspects of Cardiac Output (CO). CO is the total amount of blood, pumped from both the left and right ventricles of the heart for each of its successive systolic...
Electrocardiogram Waveshape Pt. 2
In some situations, it can be helpful to craft a compromise between maximizing ECG signal bandwidth, preserving the essential ECG waveshape, reducing the impact of skeletal myo-electrical noise and removing mains interference.
Electrocardiogram Waveshape – Pt 1
When recording ECG, it’s important to consider the impacts of electrode placement and amplifier filters on the measured biopotential. Electrode placement is important because different orientations of biopotential surface electrodes with respect to the heart’s position will result in different signal shapes.
Electrical Stimulators for Physiological Research: Compliance
All stimulators incorporate a fundamental characteristic known as “compliance.” Compliance comes in two flavors, namely voltage compliance and current compliance. Voltage stimulators emulate a voltage source, up to a certain current compliance. Current stimulators emulate a current source,
Five Steps to a Better Physiology Lab – Preparation
Integrating new hardware and software into the Physiology lab curriculum…key points from instructors who have created successful labs that will greatly increase the chances of a rewarding lab experience for both students and instructor.
Electrical Stimulators for Physiological Research
Highly-controlled electrical stimulation capability can provide a unique tool for the life science researcher to discern sensory function and associated physiological responses in living subjects. There are two types of electrical stimulators, voltage and current.
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