Pulse Generator
Pulse Generator - Related Videos
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Cited by 11 •
2018
A protocol is presented for the practical generation and coherent manipulation of high-dimensional frequency-bin entangled photon states using integrated micro-cavities and standard telecommunications components, respectively.
01:16
Pulse
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2024
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level. The pulse serves as a clinical indicator...
01:05
Pulse
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2024
The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action. Pulse Rate and its Significance Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
09:05
Generation and Quantitative Analysis of Pulsed Low Frequency Ultrasound to Determine the Sonic Sensitivity of Untreated and Treated Neoplastic Cells
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2015
Selective damage of human leukemia cells can be achieved through a novel approach of applying low frequency ultrasound both with and without chemotherapeutic pretreatment of leukemic and normal hematopoietic cells.
11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
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Cited by 2 •
2012
An experimental method to examine the early plasma evolution induced by ultrashort laser pulses is described. Using this method, high quality images of early plasma are obtained with high temporal and spatial resolutions. A novel integrated atomistic model is used to simulate and explain the mechanisms of early plasma.
FAQs
Timing circuitry determines when each electrical pulse begins and how long it lasts. It can also organize pulses into a programmed sequence, allowing the stimulus to follow a defined temporal pattern rather than occurring unpredictably. This control helps investigators compare biological responses across repeated trials and relate those responses to precisely timed experimental events.
Frequency, duration, amplitude, and waveform jointly determine the timing, strength, and form of the delivered stimulus. Changing one parameter can alter how an experimental preparation experiences the signal, even when the others remain constant. Researchers can therefore vary these settings systematically to examine how stimulus intensity and pattern influence electrophysiological, neural, muscle, or cardiac responses.
A trigger initiates output at a specified experimental moment, while a programmed sequence organizes multiple pulses according to planned timing. This arrangement supports experiments that pair stimulation with recordings or cellular events. By keeping stimulus delivery aligned with the experimental timeline, the system improves temporal reproducibility and makes relationships between an intervention and a biological response easier to evaluate.
Waveform specifies the shape of the electrical output, not merely its timing or amplitude. Along with pulse duration and frequency, it provides a way to characterize and standardize the stimulus applied during an experiment. Recording the biological response under defined waveform conditions helps researchers distinguish effects associated with stimulus pattern from those associated with overall timing or strength.
A practical workflow begins by selecting the desired frequency, duration, amplitude, and waveform, then setting the timing or programmed sequence that will control delivery. The output is applied as the experimental stimulus while biological activity is recorded or monitored. Researchers can subsequently compare responses across different settings to identify effects linked to intensity, timing, or pattern.
These devices are useful when an experiment requires repeatable electrical stimulation or precise alignment between stimulation and measurement. Applications described for biology include electrophysiology, neural stimulation, muscle stimulation, cardiac pacing research, and studies synchronized with cellular events. In each case, controlled pulse delivery helps relate observed activity to the timing and characteristics of the applied stimulus.
Because the output settings are defined and repeatable, researchers can compare responses across different stimulus intensities, durations, frequencies, waveforms, or timing patterns. The resulting comparisons help determine whether a biological change corresponds to stimulus strength, temporal structure, or synchronization with another event. This approach strengthens interpretation by linking measured activity to controlled experimental conditions.