Human evolution; our complex speech mechanism (Introduction)

by dhw, Monday, November 26, 2018, 11:44 (14 days ago) @ David Turell

QUOTES: “'The regions of the brain responsible for processing speech and the connection between them, a kind of data highway, mature at different rates,” as Angela D. Friederici, director of the Leipzig-based Max Planck Institute, explains.
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"According to the model, a specific region of the cerebrum is involved in speech processing from the outset. Known as the left temporal lobe of the cerebrum, it enables us to differentiate “mama” from “papa” automatically in the space of just a few thousandths of a second. It can already process simple sentences consisting of a few words. Until around the age of 3, the temporal lobe is therefore the epicenter of speech.
"Only then is it gradually joined by a second central speech region, which forms part of the overall speech network, namely Broca’s area, which is located in the frontal region of the cerebrum. It is here that complex linguistic information is processed.

I can only go on thanking you for the astonishing range of articles you keep presenting to us, bringing us up to date with the latest findings in so many areas of our discussions.

This article makes me wonder if the current individual evolution of the brain does not mirror its historical evolution. Leaving aside the great divide between dualism and materialism, we have concepts requiring expression and the brain developing as the range of concepts expands. Currently these concepts are learned, but each one originally had to be invented. The implementation of each invention historically would have required new neurons and new connections, and now individually the learning does the same. Similarly, the embryo itself starts out as a throwback to our animal ancestry and then “evolves” into our current human form. (In passing, this can also be seen as a clear pointer to common descent.)


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