Listening to the Quran has a calming and relaxing affect. Allah says: (approximate meaning): “and recites the Quran with a measured rhythmic recitation or in a slow style” [Al-Quran, Part 29, chapter 73; verse 4].
The Prophet (peace be upon him) said, “Allah (God) does not listen to anything as He listens to the Prophet reciting the Quran in a nice, loud and pleasant tone”. Sufyan, the companion said, “This Hadith (Saying of Prophet) means: The Prophet regards the Quran as something that makes him dispense with much worldly pleasure” (Sahih Al-Bukhari, Vol 6, Hadith No.542).
The neuronal mechanisms underlying this pleasing effect from rhythmic Quranic listening remains unclear.