Quran on Cerebrum
“But only men of understanding will pay heed.” [Quran 39:9]
The human brain is divided into several parts. The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. The cerebral cortex is divided into four sections, called “lobes”: the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
A typical diagram below shows the struture of human brain
The Cerebrum consists of four lobes which are the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
The frontal lobe is responsible for the part of speech.
“Frontal Lobe- associated with reasoning, planning, parts of speech, movement, emotions, and problem solving” (Source)
The Quran mentions this fact in Chapter Alaq
“Nay! If he (Abu Jahl) ceases not, We will catch him by the forelock (Front side of Head), A lying , sinful forelock! (Front side of Head)”
Note = Lying is a part of speech
Here Quran tells us that the front side of head (Brain) is responsible for the part of speech i.e. our Lies and Truth. This is the relation that Quran is telling us on part of our lies, thus where does it originates from (Front side of head) i.e. Forelock. The below diagram makes it more clear that where does the function of speech comes from.
Science confirms this again
” The frontal lobe is one of the most important lobes. He is the one that forms and shapes an individual’s personality. He is considered the home to our cognitive thinking. The frontal lobe attains maturity around the age of 25. The functions associated with the frontal lobe include reasoning, planning, problem solving, emotions, judging, behavior, speech parts and more.” (Source)