While our brains get swarmed with information about patterns and color,
through Kelly’s eyes fast movement trumps everything.
As she stalks the flies,
her eyes send signals to the brain’s visual cortex,
which analyses what’s changed between one picture and the next up to 70 times every second,
faster than the human brain.
And far bigger proportion of the neurons in Kelly’s brain,
are dedicated purely to the detection of movement.
She almost can’t help but pounds.
Cats’ wild ancestors, relied on low light vision,
and the ability to detect movement to stalk pray.
But these evolutionary adoptations have a down side.
Cats can’t focus on anything closed them around 30 centimeters in front of them.
But whether eyes fail them, cats have another perfectly adapted sense to go in for the kill.
The team has set up an experiemnt to reveal just how a cat secret weapon works.
“So the camera can do in full of the resolution up to 27 hundred frames one second，”
“But we thought 2030 times will get it.”
“We will set the camera 2000…”
John Bradshaw is hoping these ultra high speed cameras
will capture the extraordinary sensory organ in action.
It really is very very quick, I’ve seen still photographs that happening,
but there’s nothing like I should seen the whole motion.
So we got that, but it’s very very very quick.
John is trying to observe the cats’ whiskers
as they move forward into the attack position.
Let’s just take a toy, wait for second.
And let’s come to have a look what we have just taken.
Okay, so here we go.
Cat realizes the mouse is within his crawls but he wants to know exactly where is the relation to the mouse.
His eyes give up because he can’t focus very close.
That’s where the whiskers take over.
So we can see here is the whisker suddenly been sweeped forward.
And now the crawls come into action.
So we go here look the whiskers’ pointing almost directly in front of the cat’s nose and face,
catching them with his crawls and he sweeped around and trying to catch the mouse.
But the little muscles at the base of each whisker are really tugging hard which are swing those forwards,
completely up to the gnaw position.
This really extraordinary detail I’ve never expected to see all of this.
It all seems to take place about a fifth of a second.
We just shows how fast cats’ reflects really are,
from the point where they sweeped the whisker forward with muscles contract,
and then relax back and the whiskers spring back again.
The mouse doesn’t have a chance.
Far thicker and longer than normal hairs,
whiskers also sit three times deeper in the skin
where they attach to nerve endings,
telling the cat how far each one is been bent back,
and how quickly.
Their whiskers are the same width as their body,
allowing cats to nevigate the narrowest spaces.
Cats also have whiskers above their eyes and on their ankles,
sending them a constant stream of information as they sense the world around them.