Blue Light Pulses
Blue Light Pulses - Related Videos
02:52
Blue Light Therapy for Drug-Resistant Bacterial Infections in Burn Wounds in a Mouse Model
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2026
Source: Wang, Y., et al. In Vivo Investigation of Antimicrobial Blue Light Therapy for Multidrug-resistant Acinetobacter baumannii Burn Infections Using Bioluminescence Imaging. J. Vis. Exp. (2017)This video demonstrates the procedure for treating burn wound infections caused by bioluminescent, drug-resistant bacteria in mice using blue light therapy, followed by bioluminescence imaging to monitor treatment efficacy.
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Investigation of a Blue Light LED Device to Suppress Wound Pathogens Using a Collagen-Based Synthetic Skin Model
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2026
A 405 nm blue light LED device demonstrates antimicrobial efficacy against a broad range of wound pathogens when evaluated on a collagen-based synthetic skin model. This simplified in vitro approach offers a reproducible and ethically viable alternative for early-phase evaluation of light-based antimicrobial therapies.
08:11
DNA Staining Method Based on Formazan Precipitation Induced by Blue Light Exposure
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Cited by 1 •
2018
This method allows selective staining and quantification of DNA in gels by soaking the gel in a SYBR Green I/Nitro Blue Tetrazolium solution and then exposing it to sunlight or a blue light source. This produces a visible precipitate and requires almost no equipment, making it ideal for field use.
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Intense Pulsed Light for the Treatment of Dry Eye Owing to Meibomian Gland Dysfunction
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Cited by 41 •
2019
Dry eye disease is an increasingly common condition, which strongly impair patients' life quality. Recently, a new device employing intense pulsed light, specifically designed for the periocular area, has been shown to improve tear film stability and ocular discomfort symptoms in dry eye disease owing to meibomian gland dysfunction.
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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...
FAQs
The initiating event depends on photon absorption by either a natural photopigment or an engineered light-sensitive protein. Absorption produces a molecular change, and that change can alter neuronal activity or signaling. This distinction lets experiments examine responses mediated by existing visual or circadian machinery alongside responses produced by proteins introduced for targeted neural control.
Pulse parameters act as experimental variables rather than mere illumination settings. Timing determines when a neural system is challenged, while duration and intensity help shape the resulting response. Precisely adjusting these features allows investigators to relate a neural or behavioral change to a defined light event, improving temporal control when they test circuit function.
Blue light pulses can interrogate light-sensitive biology through different routes. Natural photopigments support studies of visual and circadian pathways, whereas engineered light-sensitive proteins enable activation of genetically targeted neurons. The first approach emphasizes endogenous light responses; the second provides a way to connect selected cells with downstream circuit activity and behavior.
A useful experimental workflow begins by identifying the pathway or neuronal population to be examined, then delivering pulses with controlled timing, duration, and intensity. Researchers can compare the resulting neural activity or signaling with behavioral effects. In optogenetic studies, genetic targeting determines which neurons respond, allowing circuit connections to be tested with temporal precision.
Investigators choose this approach when they need to connect a brief, defined light event with neural or behavioral outcomes. It can support studies of visual processing, circadian pathways, circuit connectivity, and network function. Because the stimulus is precisely timed and applied to a light-sensitive system, experiments can examine relationships between neural activity and behavior.
In neuroscience, the resulting measurements can help reveal how neural circuits operate and how their activity relates to behavior. The same strategy also supports investigation of neurological disease mechanisms by allowing researchers to influence or examine selected pathways. Its value lies in linking molecular light responses to circuit-level and organism-level outcomes within one experimental framework.