The scenario:
A woman walks into her house. She’s had a long day at work and wants nothing more but rest. She takes off her coat, puts her keys back into her pocket, and removes the fedora hat she’s started wearing to hide her recently gotten and still healing scratch marks. She walks into the living room and calls out to her husband, “honey, I’m home”. She hears his reply from the kitchen, just around the corner, “take a rest love, I’ll bring you some tea”. She collapses on the couch and hears him shuffling around, probably looking for clean tea cups. From the kitchen, he asks about her day. This brings a smile to her face and she begins at the beginning. A few minutes later, as she was just beginning to explain how she solved a major departmental problem, he walks in and places the tea kettle on the table. He needs to go back for the cups and sugar but decides to stand in the living room and listen to her story. She looks up at him and there, standing in front of her, is a man that looks just like her husband. He has the same frizzy hair, the same dark eyes, and he’s wearing her husband’s clothes. He’s even missing that same tooth on the left side. But the man standing in front of her, smiling and waiting to hear more, is not her husband. She jumps back and nearly falls out of the couch.
“Who are you!? What are you doing in my house!? Where is my husband!?”, she frantically asks as she backs away quickly. The smile on the man’s face quickly disappears, instead being replaced by a look of worry and sorrow. “I am your husband” he says to her in a calm voice. And although he’s telling the truth, she doesn’t believe him.
She has The Capgras Delusion.
This is one of the most interesting neurological phenomenons I’ve yet to hear about. The story is similar. A person, after some trauma or in conjunction with another disorder, like schizophrenia, believes that his or her closest family members have been replaced by duplicates. Clones. Impostors. They might say to the doctor, this woman looks, dresses and acts like my mother, but she is not my mother.
The question is: why does this happen?
I think there are a few ideas circulating about why, but the one that I am apt to believe is simple, and elegant (from V.S. Ramachandran). In a nutshell, the brain is made up of wires and connections. The wires from your visual center feed into an area that help you recognize faces and objects in the world. I should take a side step to point out that there is a difference between “seeing” something and “recognizing” it. There are people alive today who see their loved ones and don’t recognize them at all. This is different from The Capgras Delusion, in which a person sees and recognizes their loved ones, but doesn’t believe they are who they say they are. So back to the brain: the “visual center” connects to the “face recognition center” and that feeds into the “emotional center” of our brain. Well it turns out that the wires connecting the recognition center with the emotional center have been severed in Capgras patients. So that when the woman in my story sees her husband, the emotions that should come with that visual information are absent. She sees a man that looks like her husband but she feels nothing for him. Her mind then creates a fiction that allows this to happen: “This person must be an impostor, he is not my husband even though he looks exactly like him. This explains why I don’t feel anything for him”.
This is interesting. It suggests that our basic gut instincts play a major role in our thought processes. Instead of saying the obvious, “hey, this is my mother, even though for some reason I don’t have any feelings towards her”, the brain chooses to create a story that, although highly improbable, makes sense of the situation. A fictional story that overrides our intellectual thought processes. Although The Capgras Delusion is an extreme case, the brain actually does this all the time. It’s constantly trying to make sense of the world and it will manipulate facts into a cohesive story, while we tag along for the ride. How much of the world is actually what you think is true then? And how much of it is a story that your mind created? Chew on that for a second.
So while you’re chewing, I have three questions for you.
(1) Recall in my story above about the woman and her husband, that they actually had a full conversation before the woman freaked out. Why did she not suspect her husband of being an impostor then?
(2) Do you think that knowledge of your condition alters your perception enough so that you may switch from the fictional “impostor” story to a more believable story?
(3) How “rational” are our decisions?
I can theorize about (1). I know nothing about (2). And I’ll wait for your responses on (3) before I say anything.
Let this day also be marked in history, as the day after the Health Care Reform Bill was passed.