00:00Life, life, life, life, life, life
00:06And here is life, beautiful life, eager to blossom.
00:13The world invites us to new dawns.
00:19He gives us tongues made up to sing
00:23And the sun that dazzles us
00:27The living air enchants us
00:30It fills us with joy and life
00:34Life, life, life, life, life, life, life, life, life,
00:43the life
01:04The ear, organ of hearing of course, but also organ of our balance.
01:09And first of all, how does this sensitive sentinel in the brain manage to hear?
01:13to capture, and then transmit, the noises which are merely airborne vibrations,
01:19What waves?
02:01Concentration of the messenger sodium ion is complete.
02:04Ready for pulse transmission.
02:06I repeat, concentration of the sodium ion messengers is complete.
02:24Look, here are vibrations of medium amplitude, about 80 decibels.
02:39Sound recording.
02:45Polarize the cell.
02:47Allow sodium ion messengers to be admitted for message transmission.
02:55What's going on, tell me? You thought you were involved in a sound transmission unit?
03:00Yes, that's what we do.
03:02But where is the sound?
03:04We don't know sound, but we transmit vibrations, their amplitude, their frequency, and that's all.
03:10This is information for the brain, I understand.
03:14He's the one who transforms all of that into sound.
03:16Yes, he's the one who can hear.
03:18Look over here.
03:20These are the cell walls.
03:22The sodium ion messengers will arrive to help the neurotransmitters, you'll see.
03:26Look, look, look, look.
03:32So, where are we going?
03:33But yes, what do we do now?
03:36Seriously, what kind of organization is this?
03:38Over here, guys.
03:40Click here for neurotransmitters.
03:43Hello, play!
03:46Come on, push, push harder.
03:56Help me, come on, I'm the one doing everything.
03:59Ouch, my feet.
04:01Look, then, you're putting the bellies in.
04:07Watch out, guys, we're coming.
04:09We will release the neurotransmitters to send the impulse to the auditory nerve.
04:13Ouch, la la la.
04:15Ouch, la la la.
04:26You see, kid, this is what we do in our sector.
04:30Reception of vibrations, transmission of impulses.
04:33And that's how we hear it?
04:35No, that's not how it is.
04:37To hear, to understand what he receives, there is only the brain.
04:41And to get to him, there's still a long way to go.
04:45Ah.
04:47Ah.
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08:43No matter what anyone says, a little music makes life a bit more pleasant.
08:46Isn't that right?
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