Invisible Infrared Light Could soon Activate Heart, Ear Cells

A discovery by University of Utah scientists might someday improve cochlear implants for the deaf and lead to devices to restore vision, maintain balance and treat movement disorders like Parkinson's.The scientists used invisible infrared light to make rat heart cells contract and toadfish inner-ear cells send signals to the brain. Infrared light can be felt as heat, raising the possibility the heart and ear cells were activated by heat rather than the infrared radiation itself. Richard Rabbitt, a professor of bioengineering and senior author of the heart-cell and inner-ear-cell studies and colleagues exposed the cells to infrared light in the laboratory. The low-power infrared light pulses in the study were generated by a diode - 'the same thing that's in a laser pointer, just a different wavelength', said Rabbitt.The heart cells in the study were newborn rat heart muscle cells called cardiomyocytes, which make the heart pump. The inner-ear cells are hair cells, and came from the inner-ear organ that senses motion of the head. The hair cells came from oyster toadfish, which are well-establish models for comparison with human inner ears and the sense of balance.Inner-ear hair cells 'convert the mechanical vibration from sound, gravity or motion into the signal that goes to the brain' via adjacent nerve cells, said Rabbitt.Using infrared radiation, "we were stimulating the hair cells, and they dumped neurotransmitter onto the neurons that sent signals to the brain," he added.He believes the inner-ear hair cells are activated by infrared radiation because "they are full of mitochondria, which are a primary target of this wavelength."The infrared radiation affects the flow of calcium ions in and out of mitochondria - something shown by the companion study in neonatal rat heart cells.That is important because for "excitable" nerve and muscle cells, "calcium is like the trigger for making these cells contract or release neurotransmitter," said Rabbitt.The heart cell study found that an infrared pulse lasting a mere one-5,000th of a second made mitochondria rapidly suck up calcium ions within a cell, then slowly release them back into the cell - a cycle that makes the cell contract."Calcium does that normally," said Rabbitt. "But it's normally controlled by the cell, not by us. So the infrared radiation gives us a tool to control the cell. In the case of the [inner-ear] neurons, you are controlling signals going to the brain. In the case of the heart, you are pacing contraction."Rabbitt believes the research - including a related study of the cochlea last year - could lead to better cochlear implants that would use optical rather than electrical signals.Nerve cells that send sound signals from the ears to the brain can fire more than 300 times per second, so ideally, a cochlear implant using infrared light would be able to perform as well. In the Utah experiments, the researchers were able to apply laser pulses to hair cells to make adjacent nerve cells fire up to 100 times per second. For a cochlear implant, the nerve cells would be activated within infrared light instead of the hair cells.Rabbitt also sees potential for optical implants to treat balance disorders."When we get old, we shuffle and walk carefully, not because our muscles don't work but because we have trouble with balance," he said. "This technology has potential for restoring balance by restoring the signals that the healthy ear sends to the brain about how your body is moving in space."Optical stimulation also might provide artificial vision in people with retinitis pigmentosa or other loss of retinal cells - the eye cells that detect light and color - but who still have the next level of cells, known as ganglia, Rabbitt says.The study has been published in The Journal of Physiology.

get in touch with us
empfohlene Artikel
Info. Wissen Nachrichten
Is It Possible to Increase the Power of a Laser Pointer and What Type Should I Use to Do This.?
is it possible to increase the power of a laser pointer and what type should i use to do this.?ADD ONE MORE CELL TO INCREASE ITS LIFE TIME POWER— — — — — —Is someone watching me through my computer?its possible that your friend had a laser pointer— — — — — —Why is it illegal to use a laser pointer at the beach?It may not be that it's against the law in general, just against the law on that beach, or city or county. Using laser lights can be dangerous. You can damage someone's eye— — — — — —How come when I shine a laser pointer through my finger I can see light come through but not bone?Finger Laser Pointer— — — — — —What tricks can I teach my cat?use a laser pointer and swirl it around.he will chase it like no tomorrow— — — — — —Do I need a special permit to carry a laser pointer?Nope. just do not shine it at cars or Cops, and you fine.— — — — — —How do I find out what laser pointer I have?It really depends on what kind of belt is powering the friction— — — — — —My dog is addicted to a laser pointer! Help!?i think it is more the owner is addicted to the laser pointer . thought it was cute at first, now not so much . i would take the laser pointer and put it in the garbage . . discipline or ignore neurotic behaviour . the addiction stops when you stop— — — — — —Would anyone else feel "violated" in any way if someone kept pointing a laser pointer through your window at h?Lol you feel invaded because of a little dot coming through your window? Cover your head in the blankets, problem solved— — — — — —Green laser pointer ANSWER THIS QUESTION PLEASE?Damage to the eye at 5mW can begin in a fraction of a second, but it's difficult to estimate in more detail. It's powerful enough that no Class IIIa laser should be pointed at anyone's eye. Color has nothing to do with power. Green looks the brightest because it's more visible to the human eye.— — — — — —Where can I find a cheap laser pointer?wall greens for like $1— — — — — —What can i do with a laser pointer?disassemble it carefully. Then, find the small black plastic bump on the circuitboard near where the batteries connect. If you have a sodering iron, melt it until it no longer sticks up as much, then wait for it to cool and put it back together. If you dont have anything to soder with, you can just as easily do the job by heating up a small metal spoon on a fire and touching it to it. This will remove the safety limit on the laser, and will make it stroger. However, since its not a particulary powerful laser to begin with, you can probably only light a match with it or burn a dry leaf. Its still pretty cool though!— — — — — —Help!! Hit with green laser pointer in eye! I don't know what to do!!?I am not sure this is true, considering that you actually took the time to ask us this on a computer that will hurt your eyes more... stop trolling, try that edit: oh, and you will be fine. jeez cmon man stop being a wuss, it will get better. promise, it happened before in my case - that was a red laser, and the green dot you saw was just probably a reflection of your last attack from the laser, the eyes work that way— — — — — —is it bad for cats to chase laser pointers?I have bought a couple from the pet store for cats. They only warning is just not to shine directly into the eyes. It wont hurt your or you kitty's skin/fur.— — — — — —Physics Project , I Need an Idea.?in case you have a laser pointer and a replicate you could desire to take a photograph of the laser mild being contemplated on the comparable perspective it hits the replicate. Use some smoke to make the ray seen (you could desire to ask somebody who smokes cigarettes to blow the smoke in direction of the replicate). yet another element you could desire to do is electrify a balloon or a plastic tube by potential of rubbing it against some textile or your hair and then carry it close to to a skinny string of water popping out the sink. The water will bend in direction of the balloon/tube. you could take a photograph of that. in case you have a magnifying glass you could desire to factor it at some thing it particularly is slightly extra away. The glass will turn each and every thing the different way up. . .or use it to pay interest solar rays onto paper to make it burn. some thing rather effortless is to take a photograph of two persons with reference to the comparable weight sitting on a see-observed preserving the stability. desire this helps. good success.
What Problem Does My Laser Pointer Have?
The Way of Reform of Linear Motor Module Laser Cutting Machine
Laser Pointer - Used in the Military
Is the Traditional Energy-saving Lamp Regulator Used for LED Circuit? Detailed Analysis of 11 Defect
Lipstick to Cosmetics Factory Processing Plant, Let Your Mouthbleast Is More Healthy
Is the Used Car Dealer I Bought My Car From Liable at All Since My Airbags Did Not Deploy?
How Does Money Laundering Work?
The Benefits of Water Dispenser for Your Business
What Is the Best Brand of Air Pump for Aquariums and How Do You Determine What Size to Get?
related searches
Laser Pointer - Used in the Military
Is It Possible to Increase the Power of a Laser Pointer and What Type Should I Use to Do This.?
The Way of Reform of Linear Motor Module Laser Cutting Machine
What Problem Does My Laser Pointer Have?
Is the Traditional Energy-saving Lamp Regulator Used for LED Circuit? Detailed Analysis of 11 Defect
Lipstick to Cosmetics Factory Processing Plant, Let Your Mouthbleast Is More Healthy
Is the Used Car Dealer I Bought My Car From Liable at All Since My Airbags Did Not Deploy?
How Does Money Laundering Work?
The Benefits of Water Dispenser for Your Business
Schnell verbindung

Zuhause

Service

Über uns

Kontaktieren Sie uns

UNSER PRODUKT

Das moderne Haus

Landschafts haus

Vintage Haus

Guangzhou DaLong CNC Machinery Technology Co.Ltd spart keine Kosten, wenn es darum geht, sicherzustellen, dass wir über die neueste und beste Ausrüstung verfügen.

keine Daten
ÜBER UNS

Unternehmens profil

Unternehmens geschichte

KONTAKTIEREN SIE UNS

Copyright © 2021-2035 Guangzhou DaLong CNC Machinery Technology Co.Ltd | Sitemap

Wholesale Machinery supply Melayu  |  Milling machine manufacturer العربية  | EDM Machine factory OEM