I wouldn’t normally bother to write about something like this, except that I was struck with the sudden impulse to do so. Who knows, maybe somebody out there will find it beneficial.
Anyway, as a college student, I am frequently tasked (yes, it’s a verb) with memorizing pointless things that I don’t really care much about. On one such occasion, I had an upcoming history test that would include several identification questions. These identification questions would consist of a word or phrase relevant to that slice of history and it would be my job to produce a short paragraph demonstrating my knowledge of the subject. As one of my professor’s taught me a long time ago, the best way to answer an identification question is to answer three questions:
- What is it?
- Give me some detail. (What specifics do you know about it?)
- Explain its relevance to the present. (Why are we studying it?)
Providing sufficient detail for #2 generally meant devoting about three sentences to specific information about the event. This meant that I had five pieces of information to learn per identification question and there would generally be five identification questions to answer. This meant 25 pieces of information relating to five subjects. Now, being a piano player, I’m constantly tapping my fingers to some melody or playing chords on the desk. I’m not quite sure how it happened, but I realized that it was pretty easy to memorize five things with the fingers of one hand. I’d just press a finger on the desk and associate it with that item. Pretty soon, I knew all of the identification topics just by pressing each finger down in order. A recent example from microbiology (the methods of action of antibiotics, there are conveniently five):
- Inhibition of cell wall synthesis (thumb)
- Inhibition of protein synthesis (index finger)
- Inhibition of nucleic acid synthesis (middle finger)
- Cell membrane disruption (ring finger)
- Metabolic antagonism (pinky finger)
Easy enough, right? Absolutely. Now, as to the actual training. To learn them, I press down my thumb and recite the first item from the paper or whatever else I’m learning off of. I lift my thumb, look away from the paper, and press the thumb down, reciting the item. Then, to learn the second, I press down my index finger and recite the second item reading off of the paper. After that, I look away from the paper again, lift both fingers, then press down the thumb, recite the first item, press down the index finger and recite the second item. Then I look back to the paper to learn the third item and so on. The benefit of learning this way is that not only are you associating the information with recall cues that you’re carrying around with you (no offense to the fingerless), but you’re engaging in repetition, which also assists in the learning process.
Anyway, I’ve found this method effective for information in multiples of five (and not, but it can be a little harder). But back to the history example, because that demonstrates the sort of nesting that’s possible. For the sake of example, we’ll assume that we have the following five identifications to learn:
- Battle of Saratoga
- What is it?
- A decisive battle fought in the American Revolution near Saratoga, New York.
- Give me some detail.
- Resulted in the capture of an entire British army.
- Prevented an invasion of New England from the north and prevented the isolation of New England from other American forces.
- Actually consisted of two battles: The Battle of Freeman’s Farm and the Battle of Bemis Heights
- Why is it important?
- Because the Americans demonstrated that they were capable of actually fighting a British army and winning, the French were convinced to join the war on the side of the Americans. It was the help of the French that enabled the colonists to win the American Revolution.
- Benedict Arnold
- Who is he?
- An American general during the Revolutionary War.
- Give me some detail.
- Arnold’s leadership was crucial to several American victories and his prowess earned him several promotions.
- He was wounded several times, most notably in the leg. There is a monument to his leg in Saratoga National Historical Park.
- He became a British officer after becoming disenfranchised with the Americans.
- Why is he important?
- A fantastic soldier for the Americans, Arnold’s abilities as a general ensured American victories in crucial battles, including the Battle of Saratoga, which was a turning point in the American Revolution.
- George Washington
- Who is he?
- Piece of information 1
- Give me some detail.
- Piece of information 2
- Piece of information 3
- Piece of information 4
- Why is he important?
- Piece of information 5
- Treaty of Paris
- What is it?
- Piece of information 1
- Give me some detail.
- Piece of information 2
- Piece of information 3
- Piece of information 4
- Why is it important?
- Piece of information 5
- Yorktown
- What is it?
- Piece of information 1
- Give me some detail.
- Piece of information 2
- Piece of information 3
- Piece of information 4
- Why is it important?
- Piece of information 5
Now, we have five identifications, each with five pieces of information associated with them. This is why it’s great to have two hands. I sub-associate the information with each identification with the fingers on the opposite hand. So, for instance:
- Battle of Saratoga (Left thumb)
- Decisive battle fought near Saratoga, New York in the American Revolution (Right thumb)
- Resulted in the captre of an entire British army. (Right index finger)
- Prevented an invasion of New England from the north and prevented the isolation of New England from the rest of American forces. (Right middle finger)
- Actually consisted of two battles: The Battle of Freeman’s Farm and the Battle of Bemis Heights. (Right ring finger)
- Important because it caused the French to join the revolution on the side of the Americans. (Right pinky finger)
- Benedict Arnold (Left index finger)
- General in the American Revolution (Right thumb)
- Crucial to American victories (Right index finger)
- Wounded in the leg and monument to the wound (Right middle finger)
- Defected to the British side after becoming unhappy with his treatment in America (Right ring finger)
- Abilities allowed the colonists to win the Battle of Saratoga which was the turning point in the American Revolution (Right pinky finger)
- George Washington (Left middle finger)
- Piece of information 1 (Right thumb)
- Piece of information 2 (Right index finger)
- Piece of information 3 (Right middle finger)
- Piece of information 4 (Right ring finger)
- Piece of information 5 (Right pinky finger)
- Treaty of Paris (Left ring finger)
- And so on…
- Yorktown (Left pinky finger)
- And so forth…
One of the most important facets to remember is the recursive repetition as you’re learning the items. Reciting the items in order would be okay, but you really want to make that association between the finger on the left hand being down and then recalling the five right-hand items. Additionally, testing the associations by trying to recall them all in reverse order makes good practice for whether or not you’ve actually learned them and associated them with your fingers. (For instance, start with the pinky item on your left hand, then recall the right-hand items in order from pinky to thumb instead of thumb to pinky.)
Furthermore, I’ve used what I referred to as a “hand map” to remember the cranial nerves and whether their functions were sensory, motor, or both. Unfortunately, there are twelve cranial nerves, so it becomes a little tricky. Although I had to learn the functions as well as the stuff presented below in the table, this is just being used to illustrate the hand map concept.
|
Number
|
Name
|
Sensory
|
Motor
|
|
I
|
Ocular
|
X
|
|
|
II
|
Olfactory
|
X
|
|
|
III
|
Oculomotor
|
|
X
|
|
IV
|
Trochlear
|
|
X
|
|
V
|
Trigeminal
|
X
|
X
|
|
VI
|
Abducens
|
|
X
|
|
VII
|
Facial
|
X
|
X
|
|
VIII
|
Vestibulocochlear
|
X
|
|
|
IX
|
Glossopharyngeal
|
X
|
X
|
|
X
|
Vagus
|
X
|
X
|
|
XI
|
Spinal Accessory
|
|
X
|
|
XII
|
Hypoglossal
|
|
X
|
As you’ve probably already figured out if you’ve read this far, I had associated the first ten nerves with my fingers (and the last two with each wrist, but that doesn’t matter here). So I already had all of their names and numbers (it’s easy when they’re in order because I can just count across my fingers), but I needed to figure out how to remember whether they were sensory or motor or both. The traditional method would be to remember each and then remember its characteristics as dependent upon the nerve. Instead (and this is pretty strange), I just memorized that table up above using the following method. In order to remember both sensory and motor checkmarks, I had to create two hand maps. The first was the map of the nerves with sensory functions, the second was the map of the nerves with motor functions. So, to start, I wanted to remember which nerves had sensory functions. Because each nerve was already associated with a finger, I placed my hands with palms facing down above the desktop. If the nerve for that specific finger was a sensory nerve, I pressed that fingertip to the desktop. The fingers for nerves that did not have sensory functions remained off of the desktop. So it looked like:
x = fingertip pressed on the desk; o = fingertip in the air
[Left] [Right]
xoo xxx
x||| |||x
\|||x o|||/
… and both wrists in the air to represent that CNXI and CNXII were not sensory nerves. To me, remembering the position of my fingers and simply reproducing that was much easier than trying remember whether each nerve was sensory or motor. I could just put each map down on the desk and count over to figure out if the nerve I wanted was sensory or motor.
Anyway, this particular method for remembering things has helped me greatly during my schooling, so hopefully someone else will find it as beneficial as I have. And just for random information’s sake, if you were to memorize one piece of information for every possible state of having fingertips up and down, that would amount to 2^10 (=1024) pieces of information. So, just something to think about.