The Zombie Apocalyptic Safe House (are you prepared?)

Have you seen this? How cool is it? This is apparently the Vagabond, a mobile shelter designed by Austen Fleming, winner of Bustler's annual Zombie Apocalypse Safe House competition. Based on the shell of an armadillo, it has reflective camouflage on the outside which is designed to allow it to blend in with the environment, and photovoltaic cells that can provide heat, boil water, and charge electronic devices. It's said to also have a wind-powered ventilator, a water filtration system, and an iPhone compatible tracking device. It can fold up, slinky style so that you can carry it like a backpack!


I'd have to wonder how thick of a shell it is. Surely a zombie could break through it? Either way, it's a very cool concept.

Zombies Pt 3: the zombie brain

In this part of the zombie series, I decided I wanted to have some fun with the zombie brain (the brain eating kind). Check out Pt 1 about Zombies in Nature and Pt 2 on Zombies in History.

Beyond the "living dead" theory, zombies are characterized primarily by their abnormal but sterotyped behaviours. We can see this particularly in many popular Hollywood movies, where zombies aren't portrayed as reanimated dead, but as living humans infected by a biological pathogen such as a virus. They are alive, but different. However the method of transmission, the person is usually transformed into a single-minded hunting machine with all changes to bodily function serving to locate the prey, capture them and then to feed.

Neuroscience has shown that all thoughts and behaviors are associated with neural activity within the brain. Therefore, the zombie brain would also be similar. It makes no sense for it to be different. Because of the behavioural symptoms shown in movies, we're given clues and can piece some of the them together.

Let's break it down by symptoms:

1. Rage: When you look at zombies, they are always trying to eat people (generally angry I guess if they are to feel something). It's an anger that is directed toward everyone simply because they're human or, the next meal course. According to Oscillatory Thoughts, this behaviour has roots in the primitive parts of the brain that center around flight or fight. In humans not infected, these impulses are suppressed by signals in the lower part of the frontal lobe: the orbitofrontal cortex. It sends inhibitory signals to the amygdala.

Like crocodiles (who is driven by the amygdala--studies show that by damaging it, the flight or fight responses is significantly reduced) zombies would be driven by this. Working with the amygdala, the anterior cingulate cortex dampens the excitability, giving the frontal lobe time to process and think what to do. A zombie would potentially have a damaged anterior cingulate cortex. With it affected, the zombie would be unable to regulate the anger, creating hyper-aggression.


2. Appetite: In the brain, there is an important part that controls feeding. This is the ventromedial hypothalamus. Zombies have an insatiable appetite it seems. They're always hunting for prey to chew on. If zombies were to have damage in this area, they wouldn't know when to stop eating. There have been studies in primates that have shown that damage to this area of the brain causes monkeys to eat anything and uncontrollably.

3. Stumbling/staggering gait:

A zombie isn't the best athlete. They stumble and stagger as they move. The area in the brain responsible for balance and fluid motion is the cerebellum and the basal ganglia. Zombies would probably suffer from some sort of dysfunction, much like cerebellar degeneration such as ataxia.

It's possible that all combined, this could explain the behaviour of zombies. Or at least the ones we know from popular fiction. What other symptoms can you think of?

Zombies Pt 2: Historical Accounts

Last week, I posted about zombies in nature and how it's not all sci-fi and brain eating corpses brought back to life. Such is the tale of Clairvius Narcisse, a man who was allegedly poisoned with the poisons used by a Bokor. In 1962, he "died" and was given a burial. When the Bokor later dug him up, Clairvius was given a paste that at certain doses has hallucinogenic effects that can cause memory loss. He was then forced to work, alongside others, on a sugar plantation until the master's death. Because the doses of the narcotic paste stopped, Clairvius eventually regained his sanity (unlike many others who suffered brain damage). One day in 1980, in a supermarket, Angelina Narcisse was shocked when Clairvius, her brother, walked in.

Accounts of zombies go back even farther. Recently, archaeologists found an 8th century graveyard in Roscommon, Ireland with more than 120 of human skeletons with large stones stuck in their mouths--a ritual researches believe the locals did to stop the dead from returning to walk the Earth as zombies. The bodies in the cemetery dated between the 7th and 14th centuries.

At first, the team of archaeologists thought that they had stumbled across a burial ground for the remains of the victims of the Black Death. Initially, they believed that it possibly could have been related to vampire slayings, where a stake is driven into the heart. During the Middle Ages, the people at the time thought that vampires were believed to spread plague. A stone placed inside the mouth was thought to prevent this, causing the corpse to starve. The only thing against the theory about vampires, was that the vampire culture didn't evolve until the 16th century. Therefore, researchers thought that the act of placing stones in the mouths might have simply acted as a barrier to stop the dead from coming back from the graves, possibly feeding into the theory that the vampires would starve with such methods later on.

One scientist said that the mouth 'was viewed as the main portal for the soul to leave the body upon death. Sometimes, the soul could come back to the body and re-animate it or else an evil spirit could enter the body through the mouth and bring it back to life'.

In fact, many cultures placed something in the mouth of the deceased. Ancient Greeks and Romans, for instances, placed a coin in the the person's mouth before burial, believing that it would be payment for the ferryman who conveyed souls across the river that divided the world of the living from the world of the dead.

There are many practices of putting stone and other objects into the mouth of the deceased. What do you think was going on? Was it to stop the dead from rising? Or some other reason?

(Also, check out this awesome hardware store, taking zombie preparedness to a whole new level!)

Zombies Pt 1: Zombies in nature

Zombies. They're quite popular these days. Movies like Dawn of the Dead, Zombieland, or Residence Evil are everywhere, depicting flesh eating creatures going on a killing spree--either because of a virus, chemical, radiation or some other paranormal explanation. Even the CDC got in on the action and specialized their web-page to prepare you for the zombie apocalypse.

But in reality, zombies have a whole different meaning. The creole word ''zombi' is derived from Nzambi, a West African deity, coming into use in 1929 after the publication of The Magic Island by William B. Seabrook's. The book describes the first 'zombie' Seabrook came across:

"The eyes were the worst. It was not my imagination. They were in truth like the eyes of a dead man, not blind, but staring, unfocused, unseeing. The whole face, for that matter, was bad enough. It was vacant, as if there was nothing behind it. It seemed not only expressionless, but incapable of expression."

Haitian voodoo priests, known as Bokors, study and use black magic to resurrect the deceased. According to local lore, a bokor captures a victim's ti bon ange, or the part of the soul directly connected to an individual, to create a zombie. What the Bokor uses, however, is a powder issued to the victim orally that is often called coup padre. After analyzing the powder, scientists found tetrodoxin (a poison from the puffer fish), a marine toad that also produces a toxic substance, a hyla tree frog, and sometimes, human remains as main ingredients. In addition, some contain other plant and animal ingredients, like lizards and spiders, which would be likely to irritate the skin. Some even included ground glass.

Once the powder gets into the bloodstream, the victim's heart rate begins to slow to a near stop and he/she is perceived as 'dead', despite them only being paralyzed. Thinking the person dead, the public would bury him/her. The victim would then be exhumed by the Bokor. Although alive, the victim's memory would be messed up badly and they are said to be transformed into a mindless drone, often said to be put to work in the fields as slaves.

There are also natural sources of zombie-nism that can be found. Recently, a stalk of fungus species Ophiocordyceps camponoti-balzani was found growing out of a "zombie" ant's head in Brazil. The fungus was found to infect an ant and take over its brain. Once the ant gets to an ideal location for the fungi to grow and spread their spores, the ant is killed.

Another natural "zombie" is created in South America by a female phorid fly. With the use of a needle-like appendage, the female fly will inject their egg into a fire ant. The egg grows and the larva migrates to the ant's head, living there for weeks as it eats at the brain. Sometimes, the ant is compelled to move away from its colony to avoid attack by the other ants. Once it's grown, the fly decapitates its host, exiting through the ant's head.

There's also the case of a parasitic jewel wasp that uses a venom injected into a cockroach's brain to inhibit it of free will. The venom was found to block a chemical substance called octopamine (a brain substance that places insects in an alert state, inspires them to move, and allows them to perform demanding physical tasks) in the cockroach's brain. Unable to fight back, the "zombie" cockroach can be pulled into the wasp's underground lair where an egg is laid in its abdomen. Much like with the fire ant, the larva eats the still living cockroach from the inside out in about seven to eight days.

These are just a few instances of natural zombie-nism and how it could occur. How do you feel about pop culture's obsession with the brain-eating zombies?