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Investigating Predatory Behavior Using Optogenetics

Posted by Ready Lasers on

   The latest research related to behavioral optogenetics is a study at Yale University that investigates predatory hunting behavior in mice. The paper, published in the January 12 issue of Cell, describes how the researchers isolated the brain circuitry that coordinates hunting. One set of neurons in the amygdala, the brain's center of emotion and motivation, cues the animal to pursue prey. Another set signals the animal to use its jaw and neck muscles to bite and kill. The researchers used a blue DPSS 473 nm laser to selectively excite the neurons. They observed that when the laser was...

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Lasers Help Molecules Reach Coldest Temperatures Ever

Posted by Atul Garg on

    Researchers at MIT have used lasers to bring down the temperatures of molecules to 500 nano-kelvins (about minus 273.15 Celsius), which is just 500-billionths of a degree above absolute zero. It is believed that molecules exhibit very different physical properties at such cold temperatures, and scientists have been trying to study this effect for decades. While cooling atoms has been possible earlier, this is the first time molecules (2 or more atoms chemically connected) have been cooled to this extent. Lead Physicist Martin Zwierlein cooled down sodium-potassium gas with lasers to dissipate the energy of the individual gas...

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Incident Statistics Show Growing Need for Proper Training

Posted by Ready Lasers on

While most people are aware of the dangers associated with misuse of laser-pointers, little is known about the extent to which lasers are found in everyday work environments. A worker may be exposed to lasers while scanning a bar code, performing a procedure in a medical or veterinary practice, monitoring a machine cutting through metals, ceramics, plastics, or multiple thicknesses of cloth, leveling a beam in a construction project, setting up an entertainment show or while conducting research. Of the reported laser accidents, 75% of personnel were accidentally exposed due to improper training and lack of controls. (www.rli.com) Exposure to...

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Optogenetics: New method allows scientists to monitor and stimulate neurons at the same time!

Posted by Ready Lasers on

Optogenetics encompasses a range of techniques which enable control or monitoring of select populations of neurons. Until now, researchers were only able to use these techniques separately. Researchers at University College, London have recently developed a system that allows them to combine these techniques to observe and stimulate neurons simultaneously.The basis of Optogenetics is the presence of certain light-sensitive proteins in neurons. Some proteins light up only when the neuron fires in response to some stimulus. This allows scientists to observe the natural behavior of those neurons. There are other proteins that cause a neuron to fire (i.e. behave in...

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Low Powered Laser Attacks Human Lung-Cancer Cells

Posted by Ready Lasers on

A recent study published by researchers at the University of Toronto demonstrates the effectiveness of Photothermal Ablation Therapy for lung cancer, by using a low-power near infrared (NIR) laser and indocyanine green (ICG) – a cyanine based dye used in medical diagnosis. Laserglow’s 808nm laser was used as the illumination source. Lung cancer is the leading source of cancer-related deaths worldwide. Surgery has been found to be the most effective option for early stage non-small cell lung cancer (NSCLC). In some cases, however, the presence of other mutant cells (diseases) compromises the ability of lungs to receive surgery. This necessitates...

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