Okay, so today I've got a special treat a nice big hobo spider
So today we're going to be whoa It just caught that fly
Today we're going to be seeing if spiders get dizzy
If you've ever watched spider-man you may have had the question does spider-man ever get dizzy hanging upside down like that
and gonna spider weaves of web and is hanging upside down and twirling in the air. Does it ever get dizzy?
So I made a makeshift turntable here and I'm going to be spinning it around in circles to see if it actually gets dizzy
Okay, so I've got my hobo spider here
I'm a little bit nervous to do this experiment using a hobo spider because I've read conflicting information online
In fact, they're not quite sure how venomous the hobo spider is
Some scientists have said that nearly all bites that have previously been attributed to a brown recluse spider
We're actually a hobo spider and then there are some scientists that say that the hobo spider bite
Actually isn't that bad and doesn't cause any necrosis of the skin doesn't cause any lesions and actually doesn't even hurt that bad
So today I'm going to be letting it bite me and seeing if my arm falls off just kidding. That's a different channel
Okay, so the hard part here is going to be getting the spider out from under the cup and under my glass case
So first just try to remove the paper
These guys are really fast they can move around three feet per second
Feel like it can almost push the cup over. here we go. Oh so nervous, okay
Three feet per second, that's pretty fast
There we go. I'm hoping that it'll just stay still and I'll stick this over it but let's see Oh
Oh
Got it
Okay, it's in
Got it
So the way that I'm going to be testing if it gets dizzy or not is I'm going to spin it really fast
and then I'm going to see if it's able to make straight lines or
If it makes curved lines because when a normal person gets dizzy
It's really hard to walk in a straight line
you usually start to go straight and then you curve so my goal is to try to get the spider to run and see if
It runs in a straight line or curves. This is just a check to see how it walks around when it's not dizzy
So it looks like no matter what it always hangs out towards the walls of the glass
That's where it wants to be
because it feels like it's safe in the corner there and
It pretty much sticks towards there as soon as I move the glass it instantly goes towards the edge pretty fast, too
But now let's see what happens when we spin it can it get dizzy and if it gets dizzy
Will it still be able to detect where these corners are and quickly move to the corners?
Well, let's check it out and see. Okay, let's get it spinning
make sure we're centered and
Go🍕
Okay, now, let's see how it moves Oh
Doesn't seem like it's going in circles or anything actually it is going in circles because it's in a round thing, but
So as far as I can tell it doesn't look that dizzy
Okay, so why didn't the spider get dizzy?
Well in order to answer that we have to understand why we get dizzy
We get dizzy because in our inner ear we have these tubes filled with liquid
We have three of these tubes in our inner ear and they're all pointing different directions
and in these tubes
There's liquid and hairs and when the liquid flows it bends these hairs and these hairs are attached to nerves
So let's our brain know that we're moving because the fluid moves and then it bends those hairs and that tells our brain we're moving
Or we change direction
so that's why when you lie down your brain knows that you're facing down because the fluid moved a little bit through those tubes and
Depending on which way it bent
That's how your body knows which way you went or which way you laid down and even though that liquid helps us keep our balance
And helps us know which way is down
It also is the thing that makes us dizzy because when we spin really fast
That fluid kind of sloshes against the sides of those tubes and after a while once that fluid becomes stable
that's when it seems like
You stopped moving but then it seems like the world around you is spinning
so once that fluid is stable you feel like you're standing still and the world around you is spinning but then when you stop that
Fluid continues to move through your inner ear and it bends those hairs
so your body still thinks you're moving even though you stop because that fluid is still moving and after a while that fluid kind of
Stops sloshing around in your ear and eventually your hairs that never become stable and you don't feel dizzy anymore
But for something like a spider it doesn't have that inner ear sensation
And so it probably doesn't feel dizzy in any way like we feel dizzy spider sense their environment
mostly through hairs on the outside of their body
They use those hairs
Sense movement in there web kind of like when the spider caught the fly at the first of my video
It sends some movement and it costs a movement with its eye and then it quickly lunch and grab that fly
so I would assume the way to
Bewilder a spider is to make all of those hairs move all at once and it doesn't really know what's moving on
What is it, but for just spinning it around in a circle?
it doesn't seem like it affects it at all because
It's not like it changes the direction of those hairs because it doesn't have fluid to bend it due to the centrifugal force
Of it spinning around so even though it was really hard to tell with this experiment to know if the spider was dizzy
I couldn't really tell a difference between whether we spun the spider didn't spin it, but I'm gonna go ahead and say that
Spider doesn't get dizzy by spinning since this spider did so well doing this turntable
Experiment. I've decided to turn it loose into the environment
In fact that's better for this guy because my wife instructed me if during the transfer if anything went wrong during this
Experiment I was to burn down the entire house. So I'm glad the spider didn't get loose. So let's go let it go now
Okay, here we go
There goes
Okay, good luck spider. Hey everybody. Thanks for watching another episode of the actual lab
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