The purpose of that rubbery stuff inside the skull

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SUMMARY

The discussion centers on the historical understanding of the brain's function, specifically the transition from ancient beliefs to the recognition of the brain as the organ responsible for thought and motor control. The speaker references the use of phylacteries in Jewish tradition, which symbolize the importance of scripture in one's thoughts. Key historical figures mentioned include Galen, who, around 200 A.D., identified the brain as the source of motor control, contrasting with Aristotle's earlier misconceptions about the brain's role. The conversation highlights the evolution of neuroscience and the cultural practices that reflect this understanding.

PREREQUISITES
  • Basic understanding of Jewish traditions, specifically phylacteries.
  • Familiarity with historical figures in neuroscience, particularly Galen and Aristotle.
  • Knowledge of ancient medical theories regarding the brain and heart.
  • Awareness of the evolution of scientific thought in relation to human anatomy.
NEXT STEPS
  • Research the historical context of phylacteries and their significance in Jewish culture.
  • Study Galen's contributions to neuroscience and his impact on later medical theories.
  • Explore Aristotle's theories on the brain and their influence on ancient medicine.
  • Investigate the transition from ancient beliefs about the brain's function to modern neuroscience.
USEFUL FOR

This discussion is beneficial for historians, students of neuroscience, cultural anthropologists, and anyone interested in the evolution of medical thought and its cultural implications.

Janitor
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I was listening to Christian talk radio this morning. The speaker said that Jewish people--or maybe it was exclusively males--sometimes wore "phylacteries." These were boxes with scriptures placed in them, and they were worn, presumably with the help of a strap, on the forehead. The speaker explained that doing this was their way of showing that they had the scriptures "in the front of their minds.”

That got me to wondering how long ago this practice started. It must have been after a general consensus was formed that that chunk of cauliflower inside the skull was the organ that did our thinking for us. When did that idea become accepted? Hundreds of years ago? Thousands?

I would think that there must have been times when a tribesman was wounded in the head by a fall from a tree or a wallop from an enemy club, such that brain damage was done. The others may have noticed that ever after, Ug talked funny and couldn’t walk in a straight line. Would that have been enough to start an oral tradition that the gelatinous gray stuff in the head was where our motor controls were located? Are there any ancient books that mention such a thing?

I no longer remember where, but I once read that there was a time when it was thought by some that the brain’s main function was to cool the blood. The heart, on the other hand, noticeably sped up under stressful conditions, leading folks to think that it was where the mind was located. Has anybody heard this?
 
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Thanks for the links, gerben. Around 200 A.D. at least one person (Galen) figured the brain was the source of motor control. And it was Aristotle who started the false ideas of my last paragraph.
 

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