Author Archives: FatimaSyed

Can We Program Our Brains?

Imagine a world where altering memory, never being blind and downloading skills into our brains exist. Well, science isn’t as far off as you think! As farfetched as the idea of programming our brains seems an area of research in neurosciences called optogenetics works with neurons (brain cells) and light in order to mimic our natural brain wave patterns and send “fake” signals to the cells. Research done with optogenetics uses altered cell proteins to make them respond to light. This allows us to control specific reactions that take place in targeted parts of the brains quickly that things like drugs just cannot do since they lack the precision and take time.

Image result for optogenetics

Light hitting the neuron By: Julie Pryor

 

Research Being Done

Researchers in a 2007 study used mice and placed a wire into their brain then flashed a super fast blue light into a relatively large area of the brain where control over motor skills are known to be. They were able to get the mice to walk in circles meaning this stimulus allowed the researchers to change the rodents’ motor behaviour!

But research hasn’t stopped there, with further understanding of brain wave patterns a recent study (still done on mice) was able to control the light better and use holograms. They used a specialized technique called 3D-SHOT that mimicked the natural brain wave patterns which, when measured by the amount of calcium consumed by the brain, found that this light probably caused the mice to believe what they were seeing, hearing or feeling was real. Calcium was used because it was a good indicator of how much the neurons were firing, the more calcium used means there were more neurons firing and vice versa.

Future Implications

While this research for humans is still ongoing, one day it might be possible to program our brains and treat diseases that do not currently have cures such as Parkinson’s disease or blindness. For example, if we could mimic how eyes send signals to the brain we could use prosthetic eyes with these copied signals and cure blindness!

Inspiration 

By: Fatima Syed

African Wild Dogs Have a Democracy?!

the African wild dog, also known as the African painted dog, has the scientific, genus and species, names of Lycaon pictus, meaning “wolf-like, painted”Native to the East African arid savannas, forests and grasslands they live in packs that are highly social. They prey on rodents, lizard and large herbivores such as wildebeests or antelope.

Their success is due to voting?

These packs of dogs are highly effective predators, hunting and killing with an 80% average success rate! As a comparison lion packs kill with a 10% average success rate. This is due to their highly social pack life. Unlike other predator packs, these dogs seem to value teamwork and empathize deeply for their other pack members. Led by a monogamous alpha male and alpha female pair, before each hunt these African wild dogs take a vote on whether or not they should hunt. How they vote is by rallying together and “sneezing,” if many sneezes are heard they hunt, if not many sneezes are heard they don’t hunt (they do not actually sneeze but rather rapidly exhale which sounds like a sneeze to us). During the hunt, they rely on each other and all contribute equally while also willing each other to “keep going”. Not only are they fair in hunting they are also fair when it comes to eating their prey. Unlike hyenas, who fight each other over the food, the African wild dogs share equally giving the best parts to the youngest in the hunt and even bringing some back for the puppies and the sick. However, since the African wild dogs live in habitats with other predators, such as lions, they need to eat their meals quickly and quietly, meaning they bring back food by regurgitation.

Pack life outside of hunting

Their socialism does not end with the hunts, it extends to their whole lives. The alpha female is the only one who gives birth to ALL the new pups bringing in the next generation! She births 2 to 20 pups and when they are born the rest of the pack helps nurse, feed, and babysit. In addition to feeding, pups need to stay at the dens for up to 10 weeks, which in the animal kingdom is a long time. Being in one place for too long with vulnerable young can cause other predators to attack making it hard for the adults to protect them.

However, their troubles don’t end there! Due to farmers hunting them, disease, global warming and habitat fragmentation from human expansion, these insanely smart animals are now classified as endangered, with only 6,600 remaining in the world today! Sadly, mortality rates for African wild dog pups are rising with temperature according to a study done on reproductive success.

So what is being done to help these animals? World Wild Life (WWF) is protecting wildlife corridors between game reserves and another practice is nursing the sick back to health then reintroducing them into wildlife

 

The inspiration behind this post:

 

By: Fatima Syed