Per my (now antiquated) #Biospychology & #Neuroanatomy classes, it absolutely is.
Welcome to...being human, with a big-ass crinkly brain.
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On the off-chance it distracts you, the Canadian author John P.J. Pinel has an excellent text book on the topics (I lost the original in the house fire; Yes, I'm on of THOSE bibliophiliac geeks who kept their original textbooks; had to repurchase this one post-fire).