A study that was conducted not too long ago by a group of specialists from both Europe and Japan came to the conclusion that the evolution of the human larynx has contributed to the consistency of human vocalization. These adjustments do not entail the creation of new tissues; rather, they involve the elimination of particular laryngeal vocal folds or cords.
This is in contrast to what one may believe would be involved in these changes. On the other hand, despite the increasing complexity of human contact, the structure of our voices has gotten simpler through time.
How can’t animals talk?
There has been a long-running debate in the scientific community concerning the reasons why chimpanzees and other nonhuman primates are unable to converse or sing in a manner that is similar to that of humans. At the crux of this debate are developmental differences in human cognitive development. More attention has lately been paid to the emergence of the human voice box, that could have played a role in the development of our capacity to produce sounds with a greater range of nuances.
The vocal membranes of many primates have the form of a thin strip and emerge beyond their vocal folds in the direction of the back of the mouth. As a result of the absence of these air pouches in their vocal apparatus, human beings, in contrast to chimpanzees and other monkeys, have a voice that is crystal clear and whose pitch is well-controlled.
Changes in the larynx were essential for the growth of human speech, therefore they occurred during the course of evolution. According to the findings of this research, simplifying the architecture of the vocal folds results in improved control over vibrations. Screaming produces active tissue oscillations, which may be seen in the larynx of a monkey or chimp while they are at work. It’s possible that humans sped up the process of developing their language by reducing the amount of variability in its origin sounds and, as a result, producing more consistent origin sounds.
Through the use of the comparative method to re-create our biological history, we have learned that if humans are unique in not possessing vocal membranes, a trait that is shared by practically all nonhuman primates, then we may have shed it in our late ancestry despite having a common progenitor. This is something that we have learned if humans are unique in lacking vocal membranes.
This decrease in our anatomy most likely promoted the quick evolution of vocal and linguistic accuracy, which was essential for the acquisition of languages even if other changes, such as those in our thoughts, were necessary.
Tiesha loves to share her passion for everything that’s beautiful in this world. Apart from writing on her beauty blog and running her own beauty channel on Youtube, she also enjoys traveling and photography. Tiesha covers various stories on the website.