Showing posts with label graduate school. Show all posts
Showing posts with label graduate school. Show all posts

Wednesday, October 30, 2013

Memory

On a recent trip to visit my former home of Cambridge, I found myself playing piano and singing with friends on several occasions. The last night I was there, I opened a Broadway songbook to a tune by a man whom one friend dubbed the "Kenny G of musical theatre"-- namely, Andrew Lloyd Weber. The tune was from Cats:
Daylight
I must wait for the sunrise
I must think of a new life
And I mustn't give in
When the dawn comes
Tonight will be a memory too
And a new day will begin.
Jibing aside, ALW has some out-of-the-ballpark hits, and although I feel most of my friends cringe every time I want to play the song, I can't shake the notion that "Memory" is one of them. If you took the song out of the context of the musical Cats and handed it to a soulful songstress to sing, I firmly believe that we'd think of it a little differently. But more to the point, Weber uses the term "memory" quite aptly in his music, showing that the here and now will one day become a memory too. And maybe the memories of multiple nights spent walking down memory lane will be consolidated into a more abstract memory.

Memory has been on my mind a lot recently, and not just memories of old friends in old towns. In a seminar class in the linguistics department, we are reading papers devoted language and what psychologists call "working memory" -- the memory for stuff we're doing in the here and now, and theorized to include some set of representations that occupy a more privileged status than other stuff. In my own research, I think more about that other stuff, i.e., "long-term memory" -- the imprint we have of all our experiences, plus a whole helluvalotta hypothesized structure which leaves us with many theorized types of memories. "Procedural memory" refers to learned behaviors, mostly typified as motor skills or procedures. Examples might be playing a musical instrument, riding a bike, lots of what goes into driving a car, and, some would say, even certain aspects of language processing. "Declarative memory" refers to memories for facts about the world and the stuff in it ("semantic memory") and to memories for particular events, or episodes, that we have personally encountered (so-called "episodic memory"). For my own part, I'm very interested in understanding how this last breakdown (between memory for stuff we know, or at least think we know, and memory for stuff we've directly experienced) should be thought about. Surely the stuff we directly experience can become part and parcel of the stuff of "facts" that we know -- we see a lot of red apples, and so we come to believe that apples are (at least often) red. But what's the internal organization of all that, and what stuff do we actually access when we're talking about apples?

There are plenty of questions to ask with regard to language and long-term memory. Whether understanding someone who is talking about apples requires someone to engage in processing all of the perceptual information about apples (such as their color) is a question that is part of a hot topic in cognitive science currently. But in my own research, I hope to answer a slightly broader question, which gets at some of the same nitty-gritty questions regarding which features of a concept are accessed during its processing--does the amount of information about (or experience with) a concept directly affect how easily it is processed during language comprehension? The structure of that information will almost certainly have consequences for processing, as well.  For instance, the information might be neatly bundled together (let's say we are apple experts and know that really red apples are also shiny and large, encompassing information about perceptual aspects of apples) or more sparse (perhaps we don't really know much about red apples other than we've seen them grow on trees in Washington, and our parents used to pack them in our lunches when we were kids, facts that are not as neatly related).

In my research, I'm starting out by investigating these kinds of questions using short texts (jargon-y term here would be "discourse") where I manipulate the amount of information that is given about various people who are described in the text.  But what I really want to know is how understanding language about stuff we really know a ton about (people who are very close to us; topics we've spent years studying; our favorite hobby, whether it be cooking or painting or singing; cities we know well) might differ from understanding language about stuff that's more vague to us (sort of like when I hear my friends talking about baseball in front of me; or like when I talk about sight-reading choral music to the people talking to me about baseball!).

I'm thinking our rich memories may help us understand each other at times and perhaps hinder our communication at others.

Monday, February 11, 2013

Meanwhile, back in the lab...

 
Wednesdays are by far my favorite day of the week this quarter. Mondays, Tuesdays, Thursdays, and Fridays are filled with classes, meetings, and talks, but Wednesdays I can have pure, unadulterated time in the lab. Typically, this means I schedule a participant for the morning and take longer than most people doing things like running calibration pulses / cleaning up after / transferring and checking data / etc.  And sometimes it means I try my hand at data analysis afterward, which it did, today.  Around 4pm, I was about to leave to go study for an exam in a behavioral genetics class I'm taking this quarter, when I decided to try to catch our lab manager before he left for the evening. The reason why is a bit of a long story, but it wound up leading me to be in the lab until around 7:30pm, and it goes something like this...

1. There is a short, squat cabinet in the lab. In it is a key to a tall, typically-shaped filing cabinet. In the filing cabinet are documents that are relevant for the institutional board of review of our university with confidential information about participant identity, potentially linking individuals to code numbers. It is important to keep this kind of information under lock and key, but unfortunately, the cabinet in which this particular key resides is fussy.

2. I am particularly poor at opening said cabinet and today it became jammed while I was trying. I therefore ended up with two documents that needed to go in the locked filing cabinet, but could not get to the key in the short squat cabinet to unlock it.

3. Our lab manager is a bit of a magician (i.e., good at making things work), and so I knew he could get the door open. It turns out that an hour, a lab manager, and two graduate students (including one with some twine and paperclip skills), and some dislodging later, we finally got the cabinet open.

4. Whew!, thought I. Papers in filing cabinet, filing cabinet locked, key back in the original cabinet, home free. Yes? No.

5. In the meantime, I had noticed that the calibration files I had so painstakingly recorded earlier had some abnormalities. Namely, "Channel 18 cals are might weenie," according to our home-grown lab software. So I re-ran the calibration pulses and this time they came out perfectly.

6. However, just as team Us had finished with the filing cabinet fiasco, a senior member of the lab walked in and immediately witnessed our "up-to-no-good" looks.

7. This led to a conversation with said senior member involving the wonky cal pulses. And he suggested attempting to find the root of the problem, which honestly seemed pretty reasonable. So I ran the cals with the channel 18 headbox pin on a couple of different settings, neither of which ended up being to explain the original wonky results.

8. However, in the process of finishing up the second test set of cals, I managed to jerk my hand into a very fragile wire in the process of pulling out the cable for the calibration box. Meaning that it broke. The very fragile wire, that is. It was of course connected to a rather spaghetti-like configuration of rainbow wires that all had to be replaced at once and re-configured to their appropriate places in the headbox.

9. ...and the replacement happened to be in the original short squat cabinet which (thank goodness!) we again had access to.

10. And after much fretting and breathing deeply and double checking, the rainbow-ribbon-y array of channels was re-mapped, I learned several lessons about the magic of EEG, and my handwriting now resides upon channels #18-29 (+ iso ground, the original culprit) in the white room of this particular lab at UCSD. Best part? Adviser's response to my email detailing all of this was that she was glad I saw it as a learning experience. Yes, yes indeed.

Sunday, January 20, 2013

Return to their unnatural coasts


The last month, in addition to featuring Christmas, Hanukkah, other-holidays-some-of-which-might-include-a-flying-spaghetti-monster, and a whole new year, also featured a whole bunch of zooming around the country for me. Unlike Paul Simon, neither my first or final destination would I call my "natural coast" (see also this album). I, in fact, have no natural coast, and that point was destination #2.

First off was some time spent in Bostonia. Rather than trying to convey the slew of emotions that being back evoked, I will just say that it was really lovely to just be in the city again, and of course even lovelier to see so many wonderful familiar faces. There was a lot of walking around in the cold rain (even that part was kind of refreshing, honestly), many tasty meals shared with good folks, multi-night B11 live band karaoke madness, hot chocolate and bananagrams, A Christmas Carol AND the Nutcracker, an apple-fetching excursion, and some hair-slaying (I now have a bob).

And then it was time for my natural un-coast, or rather, the place where I'm from, Indiana. This trip definitively marked the longest period of time I'd spent at home since moving away nearly nine years ago -- I was back in Kokomo for nearly two and a half weeks. The trip feature some work (more than I had expected; less than I had hoped), some reading, a lot of hanging out with my sisters, some game-playing, some old-friend-seeing (including some folks I hadn't seen in many a moon), the viewing of a spectacular Indiana-grown independent film made by some friends called The Legend of Green Sock, a touch of karaoke on New Year's Eve, and a great deal of time spent in the presence of my cat. I was feeling a bit stir-crazy toward the end at times, but it was utterly relaxing and really nice.

Since being back in California, courses have resumed (best quote from a neuroscientist yet this year: "we may  have some issues, but at least we're not out of jobs, like physicists"), labwork has resumed (including the fairly successful running of a participant in an EEG experiment), I have talked about twin studies to a class of would-be geneticists, and I have learned about a project in Senegal educating women about the dangers of not interacting (read: speaking) with their children at early stages, i.e., not taking advantage of all that young brain plasticity!

In other news: life continues on the other coast and a part of the other coast is coming to me in February! Hopefully before then some serious chunks of science will happen. More on that later...

Tuesday, October 9, 2012

Starting a second hat

I guess the story behind this blog is this:  I wrote one this spring and summer, pseudo-themed, and it was fun.  So in some sense, this blog could be a second hat.  This also coincides with my start in the cognitive science department at UCSD, which could certainly be seen as starting a second hat.

The thought of beginning a more traditional web log, with some sort of theme I'll have to come up with at some point, seems intimidating for a couple of reasons, one being that the timing element becomes more important when you don't cheat and post the whole blog at once after you've written the entire thing; and another being that I had to come up with at least a name for it to start.  With the idea of second chances, it first seemed to me that I might want a "second-this-or-that" sort of name.

First I turned to the snark of Dorothy Parker, and she had a catchy title to offer: "Two-Volume Novel."  Beginning a second PhD program seemed to fit with that... but not so much with the actual content of the poem, which, like the majority of Dorothy Parker's poetry, has to do with ironically unrequited love.

This seemed fairly inappropriate for a blog supposedly devoted to Finishing the Hat -- the title of a book of collected lyrics, along with anecdotes about writing them, written by Stephen Sondheim (the book and they lyrics).  A fellow classmate at MIT gave it to me for Christmas two years ago, and inside scrawled, "Dearest Liss, Go make a hat!" With a bit of inference, the metaphor (apologies; I've been reading Lakoff!) is clear... However, finishing the hat may be the goal, but Sondheim also refers to the process of making the hat within this blog's namesake song from Sunday in the Park with George (which I've actually never seen):
Finishing the hat,
How you have to finish the hat.
How you watch the rest of the world
From a window
While you finish the hat.

...
Dizzy from the height,
Coming from the hat,
Studying the hat,
Entering the world of the hat,
Reaching through the world of the hat
Like a window,
Back to this one from that.

...
Finishing a hat...
Starting on a hat..
Finishing a hat...
Look, I made a hat...
Where there never was a hat
So we'll call this studying the hat, for now.  And we'll let hat be interpreted as it may... from studies to things falling into some category called [other].  And for that I'll leave you with one further Dorothy Parker tidbit:
Faute de Mieux

Travel, trouble, music, art,
A kiss, a frock, a rhyme –
I never said they feed my heart,
But still they pass my time.