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(Phys Org2)   Human speech is possible because of a simpler "voice box", and not a smarter brain? Well that explains a lot   (phys.org) divider line
    More: Obvious, Human voice, Vocal folds, Larynx, Phonation, lead author Takeshi Nishimura of KyotoU, loss of specific vocal folds, anatomical changes of the voice box, evolutionary changes  
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408 clicks; posted to STEM » on 11 Aug 2022 at 7:14 PM (8 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



8 Comments     (+0 »)
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2022-08-11 7:17:50 PM  
neatorama.comView Full Size
 
2022-08-11 7:20:34 PM  
buuut, it's also better to keep your trap shut and be thought a fool, than open it and remove all doubt.
you can't explain that
 
2022-08-11 7:26:50 PM  
Nope.  Without the ability for complex communication, there is no evolutionary pressure for a more effective larynx.

We know the brain changes came first (or at least led the co-evolutionary charge) because you can't teach complex language to any other primate.  If you gave them a human larynx, they wouldn't know what to do with it.  But without the larynx comes the ability to sign or use other body language in more complex ways, and THEN there is something to do more efficiently with sound and a reason a modified larynx would be advantageous to survival.
 
2022-08-11 7:33:26 PM  

Unsung_Hero: Nope.  Without the ability for complex communication, there is no evolutionary pressure for a more effective larynx.

We know the brain changes came first (or at least led the co-evolutionary charge) because you can't teach complex language to any other primate.  If you gave them a human larynx, they wouldn't know what to do with it.  But without the larynx comes the ability to sign or use other body language in more complex ways, and THEN there is something to do more efficiently with sound and a reason a modified larynx would be advantageous to survival.


Can definitely see song/singing calls being a thing for early genus homo sexy times and alert calls for the group.

Many primates already have a crap ton of vocalizations for this purpose, maybe a mutant with a simpler larynx was able hoot'n'holler better for extra nookie.  Sexual selection works really really fast for stuff like that.
 
2022-08-11 7:35:59 PM  
So it's time to surgery up some infant chimps and apes and teach them to talk.
 
2022-08-11 9:02:53 PM  

Unsung_Hero: Nope.  Without the ability for complex communication, there is no evolutionary pressure for a more effective larynx.

We know the brain changes came first (or at least led the co-evolutionary charge) because you can't teach complex language to any other primate.  If you gave them a human larynx, they wouldn't know what to do with it.  But without the larynx comes the ability to sign or use other body language in more complex ways, and THEN there is something to do more efficiently with sound and a reason a modified larynx would be advantageous to survival.


The simpler vocal chords may have helped accelerate the process but you are correct, the speech portion of the brain is the important factor.  Some birds can imitate human voices quite effectively but they're incapable of actually speaking.

And if vocal chords and sounds were that important then how do people that are born deaf learn human languages?
 
2022-08-11 10:39:41 PM  
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2022-08-11 11:01:12 PM  

whither_apophis: [i.pinimg.com image 303x400]


Basically.
 
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