Xenia: Are we our brains?
Tuesday, September 29th, 2009I had to think about this question a little longer, so here it is: late, sorry
I am my brain.
Now, doesn’t that sound strange? The relationship expressed in this sentence is that of identity and that of ownership in the same instance. How can I own a brain and be a brain at the same time? More annoyingly, who is it then that owns the brain? If I am my brain, the relationship between me and brain is that of identity and thus, according to ‘Leibniz’s law’, me and my brain must share all properties.
Imagine you’re calling a friend on the phone and ask her to bring your pen to the rendezvous later. You tell her that it’s a blue pen with a red cap that has been chewed on. If she found a pen that was blue and had a red cap but lacked the bite-marks you remember, it could not be your pen. Unless you have really bad memory, but that isn’t the point. Leibniz’s law states that only indiscernible objects can be identical to themselves. That sounds trivial enough, although many philosophers like to argue about how true this principle is. And apparently it does not apply in the realm of quantum physics. Anyway, lets look at the properties of my brain. It is probably greyish-pink, wrinkled and feels like a hardboiled egg. We run into a problem here. Since you have probably never met me in person you obviously wouldn’t know, but please take my word for it: I am not greyish-pink, wrinkled and feel like a hardboiled egg. I just look like any young woman. But that is not ‘me’ either, is it? That would be my body. So apparently, if we follow old Leibniz’s lead, I’m neither my brain, nor my body. For that matter, I’m not even body and brain combined.
If it’s so easy to see that I can’t be my brain, where does this ‘new’ intuition come from? Philosophers love thought experiments to probe their intuitions. Imagine I were to damage an organ, for instance my heart, in a car accident and a new heart were transplanted into my chest. In this scenario I receive a new organ, no doubt about it. If I were to damage my brain and a donor brain were transplanted into may head, as absurd as this my sound, the intuition is quite different, though. Obviously, this time we think it is the brain donor who receives a new body and we don’t consider me to be the recipient of a new brain. Michael Gazzaniga wrote about what he concluded from a more abstract form of this thought experiment that “this simple fact makes it clear that you are your brain” ( as cited by Vidal. p. 6).
Now, I’m always really careful when things are too obvious. The thought experiment might truly illustrate our intuitions, or those of caucasian male scientists, as experimental philosophers rightly point out, but we don’t know why we have these intuitions. One could hold that our intuitions are the connections we have to some kind of spirit realm or disembodied ideas that reveal the truth in its purity. But I thought the same of ads for anti-acne face scrub as a teen, so lets ditch the unsexy naivety and get down and dirty. Here we’ll meet Fernando Vidal, who in is paper on brainhood presents the idea, that it is not science that has tought us the identity between me and my brain. Vidal coined the term brainhood to describe the “quality of being, rather than having a brain” (p.6). This he claims to be the main feature of the anthropological figure of modernity, the cerebral subject. Plainly stated, we are cerebral subjects because we exhibit brainhood. In the paper I draw from Vidal explains how the property denoted by his neologism is historically rooted and which role it plays in the ‘neurocultural discours’. To get down to the nitty-gritty of his paper already: He claims, that the ideology of brainhood, the idea that we are our brains, “has impelled neuroscientific investigation much more than it resulted from it” (p. 5). Aha, so? Well, scientific investigation does not occur in a conceptual vacuum. In his paper Vidal explains how philosophical Ideas about us and our minds have influenced how research is conducted, financed and interpreted. If you are interested in the historical account in Vidal’s paper and would like to read a great critical response by a fellow blogger, please head on to Stephen T. Caspers’ Blog The Neuro Times. He beautifully illustrates the shortcomings of Vidal’s argumentation without belittling the central claim or Vidal’s person. Still, I find Vidal’s concept of us as cerebral subjects and the notion of brainhood pertinent and his fear we might be talking about our brains (and ourselves) in the wrong way valid. I hope for some interesting discussions about this, maybe with Stephen? Anyhow, if the ideology of brainhood influenced how we ask the questions about our selves instead being an answer to our questioning, stronger scepticism is called for. That is just what Paolo Fusar-Poli pointed out in a letter to the editor of Psychiatry Research Neuroimaging, the official publication of the International Society for Neuroimaging in Psychiatry.
He worries that the public does not understand how neuroimaging technology really contributes to research of the mind and is misinformed by journalists and medical opinion leaders. The way the results of studies employing fMRI are presented to the public invite misconceptions about our brains and what neuroscientists really concludes from such studies and result in theories the autor describes as “folk-neuroimaging”. It is commonly believed that fMR images are proof for represented neural activity. However, neuroimaging involves an inference process utilizing statistical calculations and interpretative functions. The image is not a picture of the brain, but a representation and interpretation of the collected data. This common notion amongst people the author calls “neuro-realism”:
Neuro-realism reflects the uncritical way in which a fMRI investigation can be taken as validation or invalidation of our ordinary view of the world. Neuro-realism is, therefore, grounded in the belief that fMRI enables us to capture a ‘visual proof’ of brain activity, despite the enormous complexities of data acquisition and image processing.
Related to this conception is “neuro-essentialism”. The way we talk about the brain implies that we ascribe it properties that persons have.
The concept of ‘neuro-essentialism’ reflects how fMRI research can be depicted as equating subjectivity and personal identity to the brain. In this sense, the brain is used implicitly as a shortcut for more global concepts such as the person, the individual or the self.
A CNN article on a study by famous love-scientist Helen Fisher illustrates this well; the title “Loving with all your… brain”. Another example would be the New York Times article Watching New Love as it Sears the Brain. Though the title is obviously inviting to neuro-essentialism, the author at least mentions the fact that neuroimaging is not a form of mindreading. But also self-help literature like The Brain in Love by Daniel G. Amen M.D. (yes, M.D. as in medical doctor) contribute to public misconceptions. Let me quote from a Los Angeles Times article called Brains in Love- When you’re attracted to someone, is your gray matter talking sense — or just hooked? Scientists take a rational look. Notice how the title implies scientific accuracy… very sad. Here goes:
HER front brain is telling her he’s trouble. Look at the facts, it says. He’s never made a commitment, he drinks too much, he can’t hold down a job. But her middle brain won’t listen. Man, it swoons, he looks great in those jeans, his black hair curls onto his forehead so adorably, and when he drags on a cigarette, he’s so bad he’s good.
Describing experimental setups to laypeople is hard and giving an accurate account of what a specific study implies is even harder. However, it is clear from the following account that the journalist does not even understand what functional magnetic resonance images are herself and does not understand how they figure in the work of scientists.
It was only in 2000 that two London scientists selected 70 people, all in the early sizzle of love, and rolled them into the giant cylinder of a functional magnetic resonance imaging scanner, or fMRI. The images they got are thought to be science’s first pictures of the brain in love.
The pictures were a revelation, and others have followed, showing that romantic love is a lot like addiction to alcohol or drugs. The brain is playing a trick, necessary for evolution, by associating something that just happened with pleasure and attributing the feeling to that magnificent specimen right before your eyes.
The brain is playing tricks? Even if this is just rhetoric, the goal of such an article should be to educate, which it plainly fails to do. I think this quotation illustrates neuro-essentialism and neuro-realism in the media. But why is that a problem? Why can’t the brain fall in love or trick us into love? The brain does not have intentions or goals. Ti does not have feelings and therefore can not fall in love. People fall in love. The brain is an organ and is only part of a human being.
Attributing properties of a whole to one of its parts is called a mereological fallacy. This term, introduced by Bennett and Hacker in 2003, should disclose a grave conceptual problem in the way neuroscientists talk about the brain. Taken literally, brainlove doesn’t make any sense. I am not my brain, my brain is a part of me.
Now, since I’ve discussed what we are not, let me broach the issue of what we are. Intuitively I would ask myself whether I can tell what I am by looking at how it feels to be. Or even how it feels to be me. Well, I wouldn’t be the first person to do so, though maybe the first female of mixed race to do so in the world wide web. But, who knows, the net’s been around
However, I think Descartes cognito-Argument “I think therefore I am” in an oven was more earthshaking. I’ve mentioned my reservation towards Intuition and I might dedicate a future post to explaining why this is so, however, I want to be introspective for now and see where it goes. Well, it feels like I have a soul. (Again, am I a soul or do I own a soul, tricky.) But since no philosopher or scientist seriously claims to be a cartesian dualist and really thinks of himself as consisting of res extensa (body stuff) and res cogitans (soul stuff) we’ll have to drop that notion. Interestingly though, everyone reading this probably understands what is meant by soul. Not in the cognitive sense of understanding but in the way you can introspect how it feels to be. Somehow, it seems to us as if were souls. If you would like to read a scientifically informed, philosophical account about why we have this naive realistic phenomenology (why we feel like being souls) I recommend ‘The Ego Tunnel’ by Thomas Metzinger [find the twitter feed in here]. I’ll post a review at the latest end of next week… gotta do some homework at P2P University
References:
Fusar-Poli P., & Broome MR (2007). Love and brain: from mereological fallacy to “folk” neuroimaging. Psychiatry research, 154 (3), 285-6 PMID: 17350234
Vidal, F. (2009). Brainhood, anthropological figure of modernity History of the Human Sciences, 22 (1), 5-36 DOI: 10.1177/0952695108099133
