"What is it Like to Never Have Felt an Emotion?"

Asks the BBC in this article of the same name sent to me by a reader about alexithymia. It makes some interesting points. I'll highlight a few.

The causes:

Today, it seems clear that there may be many types of alexithymia. While some might have trouble expressing emotions, others (like Caleb) might not even be conscious of the feelings in the first place. Richard Lane, at the University of Arizona compares it to people who have gone blind after damage to the visual cortex; despite having healthy eyes, they can’t see the images. In the same way, a damaged neural circuit involved in emotional processing might prevent sadness, happiness or anger from bursting into consciousness. (Using the analogy of the Russian doll, their emotions are breaking down at the second shell of feeling – their bodies are reacting normally, but the sensations don’t merge to form an emotional thought or feeling.) “Maybe the emotion gets activated, you even have the bodily responses, but it happens without you being consciously aware of the emotion,” he says.

Along these lines, a few recent fMRI scanning studies have found signs of a more basic perceptual problem in some types of alexithymia. Goerlich-Dobre, for instance, found reduced grey matter in areas of the cingulate cortex serving self-awareness, potentially blocking a conscious representation of the emotions. And André Aleman at the University Medical Centre in Groningen, the Netherlands, detected some deficits in areas associated with attention when alexithymics look at emotionally charged-pictures; it was as if their brains just weren’t registering the feelings. “I think this fits quite well with [Lane’s] theory,” says Aleman – who had initially suspected other causes. “We have to admit they are right.”

Interestingly, this connection to other physical disorders:

Further work could also pin down the puzzling link to so-called “somatic disorders”, such as chronic pain and irritable bowel syndrome, that seem to be unusually common in people with alexithymia. Lane suggests it’s down to a kind of “short-circuit” in the brain, created by the emotional blindness. Normally, he says, the conscious perception of emotions can help damp down the physical sensations associated with the feeling. “If you can consciously process and allow the feeling to evolve – if you engage the frontal areas of the brain, you recruit mechanisms that have a top down, modulatory effect on bodily processes,” says Lane. Without the emotional outlet, however, the mind could get stuck on the physical feelings, potentially amplifying the responses. As Goerlich-Dobre puts it: “They are hypersensitive to bodily perceptions, and not able to focus on anything else, which might be one reason why they develop chronic pain.” (Some studies, have in fact found that alexes are often abnormally sensitive to bodily sensations, although other experiments have found conflicting evidence.)

My neurotherapist actually suggested that what I perceive to be food allergies (I basically eat the same 10 foods for 90% of my nutrition) might actually be emotional distress that I am not aware of but that is still registering physically in these negative ways. 

The way one of the sufferers connects with emotions is often an academic exercise:

Physical sensations certainly seem to dominate Caleb’s descriptions of difficult events, such as periods of separation from his family. “I don’t miss people, as far as I can tell. If I’m gone, and don’t see someone for a long period, it’s a case of out of sight, out of mind,” he says. “But I do feel physically a kind of pressure or stress when I’m not around my wife or my child for a couple of days.”
***Caleb, too, has visited a cognitive behavioural therapist to help with his social understanding, and through conscious effort he is now better able to analyse the physical feelings and to equate it with emotions that other people may feel. Although it remains a somewhat academic exercise, the process helps him to try to grasp his wife’s feelings and to see why she acts the way she does.

And finally the obligatory knock on sociopaths, because heaven forbid someone confuse your total lack of emotions and affective empathy with something as so way different as psychopathy:

Ultimately, he wants to emphasise that emotional blindness does not make one unkind, or selfish. “It may be hard to believe, but it is possible for someone to be cut off completely from the emotions and imagination that are such a big part of what makes us humans,” he says. “And that a person can be cut off from emotions without being heartless, or a psychopath.”