Signal Propagation Analysis
Signal Propagation Analysis - Related Videos
11:27
Interfacing Microfluidics with Microelectrode Arrays for Studying Neuronal Communication and Axonal Signal Propagation
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Cited by 17 •
2018
This protocol aims to demonstrate how to combine in vitro microelectrode arrays with microfluidic devices for studying action potential transmission in neuronal cultures. Data analysis, namely the detection and characterization of propagating action potentials, is performed using a new advanced, yet user-friendly and freely available, computational tool.
10:46
Mechanical Stimulation-induced Calcium Wave Propagation in Cell Monolayers: The Example of Bovine Corneal Endothelial Cells
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Cited by 25 •
2013
Intercellular Ca2+-waves are driven by gap junction channels and hemichannels. Here, we describe a method to measure intercellular Ca2+-waves in cell monolayers in response to a local single-cell mechanical stimulus and its application to investigate the properties and regulation of gap junction channels and hemichannels.
11:17
Acquisition and Analysis of an ECG (electrocardiography) Signal
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2023
Source: Peiman Shahbeigi-Roodposhti and Sina Shahbazmohamadi, Biomedical Engineering Department, University of Connecticut, Storrs, Connecticut An electrocardiograph is a graph recorded by electric potential changes occurring between electrodes placed on a patient's torso to demonstrate cardiac activity. An ECG signal tracks heart rhythm and many cardiac diseases, such as poor blood flow to the heart and structural abnormalities. The action potential created by contractions of the heart wall...
01:23
Small-Signal Analysis of MOSFET Amplifiers
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2025
In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage (VGS) of the MOSFET is the sum of the DC biasing voltage and the small time-varying input signal. This combination sets up the operating point and modulates the drain current (ID) that flows from the drain to the source. When a small AC signal is superimposed on the DC bias voltage at the gate, the instantaneous drain current comprises three...
01:21
Small-Signal Analysis of BJT Amplifiers
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2025
Small signal analysis is a fundamental approach used in electronics to understand how a Bipolar Junction Transistor (BJT) amplifier processes signals. In the active region, the BJT is designed for linear amplification. The transistor's behavior under these conditions is governed by its instantaneous base-emitter voltage VBE, a sum of the DC bias VBE, and a small AC signal VBE, resulting in the collector current iC. Here, the collector current has a DC component and an AC component. Here, VT is...
FAQs
Changes in membrane potential open voltage-gated ion channels, allowing the electrical state of the neuron to generate and propagate an action potential along the axon. Signal Propagation Analysis examines this progression to determine how effectively activity travels through a neural pathway. Changes in propagation can reveal altered communication within neurons or across connected circuits.
Electrical propagation carries an action potential along the axon, whereas synaptic transmission transfers information between neurons through neurotransmitter release. Analyzing both stages distinguishes problems in axonal signaling from disruptions at connections between cells. This separation helps researchers assess whether altered neural communication arises within a pathway or at its synapses.
Conduction speed and signal timing indicate how quickly information moves through nervous system pathways and when it reaches connected neurons or circuits. Signal Propagation Analysis uses these measurements to characterize communication across neural systems. Timing differences can therefore help identify changes in pathway function, connectivity, or coordination between neural signals.
A typical analysis follows signal movement through a pathway, examines electrical propagation along axons, and considers transmission across synapses. Researchers can then characterize conduction speed, signal timing, and connectivity rather than relying on a single measurement. Comparing these features across pathways provides a structured view of how neural circuits communicate and where disruptions may occur.
Researchers can compare signal propagation before and after exposure to a drug or following neural injury. Changes in conduction speed, timing, connectivity, or synaptic transmission indicate how the intervention or damage affects communication. These comparisons help connect a treatment or injury with functional changes in nervous system pathways without treating all disruptions as identical.
In neuroscience, propagation measurements support studies of sensory processing and motor control by showing how signals move through relevant pathways and circuits. They also contribute to research on brain disorders by identifying altered communication patterns. Together, these applications link electrical and chemical signaling with nervous system function, dysfunction, and responses to experimental conditions.