Showing posts with label prosopagnosia. Show all posts
Showing posts with label prosopagnosia. Show all posts

Monday, November 17, 2014

Pointers


Apparently, people can identify others in a tenth of a second, or less. They can remember hundreds of faces, and recognize thirty classmates as "familiar" after seeing them once.
I say "apparently", because such concepts are so far out of my experience, if my mom hadn't told me, I would have never suspected a thing. It seems impossible to contemplate; a state of advanced mental technology on par with "Star Trek" computers that understand conversational English, and androids walking down the street.
Last week I timed myself recognizing people, and found my average was two seconds. Twenty times slower. In the time a "normal" person can recognize twenty people, I identify one. This is an improvement, thanks to my new Advance Recognition Algorithm:

1: List the names of the people you will be expected to identify in the current situation
2: Attempt to determine if they're around:
2.1: List each person's identifying traits such as hair, backpack, clothing or glasses.
2.2: Search for each person using this cue
2.3: Remember the current appearance of each person identified and associate it with their name
3: Conduct whatever social business required recognizing all those people

Identifying people is an exercise in logic and probabilities. I do not think "There's Sarah!". I think "That person is probably Sarah," or "That person may be Sarah, but I can't tell." To find my brother in a store, I look for his bright orange hoodie and messy anime hair. I have an idea of how his face looks, but find it easier to search for his clothes. When I learn to recognize someone, their name becomes a pointer leading to a list of details stored as text. (A pointer, for non-programmers, is an address. Your home address is a pointer to your house.) The upside is I don't forget names. (The downside is I can't remember someone unless I can spell their name.)

Sometimes my pointers don't work. They point to the wrong thing, and I get two people's identifying details mixed up. Or they point to nothing at all, which means I have no way to recognize someone. Heaven forbid someone else should forget a name: "You know, she's got a thin little nose, and very round eyes…" This is like giving someone your home address (which does not point to your phone) so they can call your cell.

It does not occur to me that this is different, or wrong, because for me it is not. Neither is it caused by learning programming, which only gave me the vocabulary to describe my system. Though I suspect the "other way" is better, my pointers work well enough.

Tuesday, January 1, 2013

Coming Out of the Closet with Prosopagnosia

Happy 2013!

And, as per my New Year's resolution…I am "coming out of the closet". No, not that way…
I have prosopagnosia.

More colloquially known as 'face blindness' (but I prefer the scientific term), this odd neurological problem can be acquired or congenital. It's exactly what it sounds like; a difficulty in recognizing faces–the "usual way". (I'll get into the "unusual way" later.) I won't go into much detail (because other people can explain it much better, and I don't know that much detail), but this is a problem with a specific area of the brain–yes, there is a dedicated face-recognition part of your brain–and in prosopagnosia, it doesn't work so well. Like autism, this can be thought of as a spectrum disorder. At the top are the "superrecognizers", who are far better than average at remembering and recognizing faces. At the bottom are the most severe prosopagnosics, who may not be able to recognize themselves in the mirror. I am somewhere in the lower middle, closer to the bottom than the top.

Now, I said that about the "unusual way"…because I can recognize people, just with different methods. I remember voices (an almost foolproof method, unless they're not talking), and I find patterns. For example, my speech therapist wears large, ornate necklaces. This is especially good to know because she sometimes switches between curly and straight hair, and seems to have a near-infinite variety of clothing. One of my friends always has her hair in a ponytail. My brother is usually wearing something red (and even if he isn't, I know what all his clothes look like).

The other method is context. At Japanese class, I expect to see the Japanese teacher, and the other college students. I wouldn't expect to see someone from class at the library, and would most likely be perplexed if they greeted me there. It's when things fall out of context that I have problems…who's in this photo? Who is this random lady talking to me at the grocery store? Is that person at our door a solicitor? Or our neighbor?
(My mother, on the other hand, seems to always be encountering friends in the most unexpected places–at the library, while grocery shopping…I don't understand how she does it. Of course, she doesn't understand how I conclude that a couple boys I know look like Justin Bieber…apparently they don't, "and they don't look like twins, either!" Well, that's what she says; I've been using a combination of their names to address them both, since I can't tell them apart.)

Well, you'd think this is a serious problem (and it is, I believe, far worse for those with acquired prosopagnosia), but I have found one advantage to this "disorder". My mother notices faces, emotion and tone of voice. I notice other things, and quite possibly more things, more patterns, because I have to compensate. Like the blind man who can echolocate*, (though I'm far less impressive than him), one thing doesn't work; other things work better.

*I'm not making this up, Google it!