Frontal Lobe
In Surah Al-Alaq, in the story of a man named Abu Jahl who was a cruel oppressive tribal leader in the times of the Prophet Mohammad (peace and blessings of Allah be upon him), Allah revealed a verse to warn him. Therein Allah (SWT) says: “No indeed! if he does not stop, We will seize him by the forehead, his lying, sinful forehead” (Quran, 96:15-16).
According to a book titled ‘Essentials of Anatomy and Physiology,’ it is clearly stated that the forehead or frontal area of the brain is responsible for motivation and the foresight to plan and initiate movements. All this takes place in the prefrontal area of the brain. The part of the brain that is responsible for movement and planning is said to be seized if he does not stop. Other studies have proved that it is this prefrontal region that is responsible for the function of lying [Kenneth Saladin and Robin McFarland, Essentials of Anatomy & Physiology, ISBN13: 9780072965544].
Another study at the University of Pennsylvania in which volunteers were questioned during a computerized interrogation showed that the volunteers who were lying had increased activity in their prefrontal and premotor cortices [Refrence]. Subhanallah, there is a deeper meaning behind why the Quran stated: “We will seize him by the forehead”.
The most important thing to remember is that the conception of knowledge (Al-Ilm) in Islam is the Guiding Light (Huda) separating right from wrong (Al furqan). Therefore, in the same way the sun brings light to our eyes to see the world around us, Al-Ilm is the source of guidance to see the signs of Allah (SWT) around us. More such facts that are already mentioned in the Quran and will be proven in the future by mankind as Allah (SWT) says in the Quran in Surah Ar-Rahman, “So which of the favors of your Lord would you deny?”