There will be no lab meeting next Tues. The following Tues (6/3), we'll pick things back up with a Scott-fest, as in Stephen Scott. We'll definitely cover the four papers below:

1. Singh K, Scott SH. A motor learning strategy reflects neural circuitry for limb control. Nat Neurosci. 2003 Apr;6(4):399-403.

2. Graham KM, Moore KD, Cabel DW, Gribble PL, Cisek P, Scott SH. Kinematics and kinetics of multijoint reaching in nonhuman primates. J Neurophysiol. 2003 May;89(5):2667-77.

3. Gribble PL, Scott SH. Method for assessing directional characteristics of non- uniformly sampled neural activity. J Neurosci Methods. 2002 Jan 30;113(2):187-97.

4. Scott SH, Gribble PL, Graham KM, Cabel DW. Dissociation between hand motion and population vectors from neural activity in motor cortex. Nature. 2001 Sep 13;413(6852):161-5.

Since I'm sure everyone will have read them, we can just decide then who will lead us through each paper.

I will have a look at these more.... ponderous papers. Unless someone else feels sufficiently motivated, I'll present highlights (time permitting).

Cheng EJ, Scott SH. Morphometry of Macaca mulatta forelimb. I. Shoulder and elbow muscles and segment inertial parameters. J Morphol. 2000 Sep;245(3):206-24.

Singh K, Melis EH, Richmond FJ, Scott SH. Morphometry of Macaca mulatta forelimb. II. Fiber-type composition in shoulder and elbow muscles. J Morphol. 2002 Mar;251(3):323-32.

Graham KM, Scott SH. Morphometry of macaca mulatta forelimb. III. moment arm of shoulder and elbow muscles. J Morphol. 2003 Mar;255(3):301-14.

September 2

We will recommence our weekly lab meeting next Tues, 3pm. Let's cover three recent articles of intertest. I'll take #3. Can Yuri and Sam each take of the others?

1) A interesting looking paper by Randy Flanagan on the relationship between eye movements in a person doing a block-stacking task and a person watching someone else do the task:

Action plans used in action observation.
Flanagan JR, Johansson RS.
Nature. 2003 Aug 14;424(6950):769-71.

http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v424/n6950/full
nature01861_fs.html&content_filetype=pdf

2) Sainburg's paper on drift in proprioceptive sense of arm's location during repeated reaching without visual feedback:

Exp Brain Res. 2003 Aug 19 [Epub ahead of print].
Movement speed effects on limb position drift.
Brown LE, Rosenbaum DA, Sainburg RL.

http://www.springerlink.com/app/home/content.asp?wasp=f016vpwttl0qa223recn&referer =contribution&format=13&page=1&pagecount=0

3) A review of optimal control models by Emo Todorov. May be rather technical.

Optimal control methods suitbale for biomechanical systems
Todorov E. and Li W.
To appear in IEEE Engineering in Biology and Medicine Conference 25, 2003.

http://cogsci.ucsd.edu/~todorov/papers/optimal-embs.pdf

September 23

We will meet for a Lab Meeting today, Tuesday, at *4pm*. It will be an relatively informal meeting, a chance for us to get caught up with what everyone is doing.

September 30

We'll be meeting this afternoon at 3pm. Yuri will present some thoughts on Optimal Control Theory, as instigated by the Todorov paper from a few weeks ago:

Optimal control methods suitbale for biomechanical systems
Todorov E. and Li W.
To appear in IEEE Engineering in Biology and Medicine Conference 25, 2003.

http://cogsci.ucsd.edu/~todorov/papers/optimal-embs.pdf

Time permitting I may try out some of the talk I'll be giving later in the week.

October 7

Sorry for the short notice reminder, but we will be having lab meeting today, 3pm. The schedule:

1) Yuri will be presenting the sample Optimal Control problem on rocket launching.

I'm hoping to have photocopies of the example on my door by noon, so if you want to look over it over lunch you can.

2) I'll briefly describe some numerical approaches to the boundary value problems that result.

3) I'm going to present (again) the experiment that Hilda, Sen, and I are currently working on, as I'd like to have a brainstorming session on other ways to show the main conclusion is really true (if indeed it is).

October 21

For lab meeting next Tuesday, we'll read two recent papers making use of system identification methods to study motor learning:

Baddeley RJ, Ingram HA, Miall RC.
System identification applied to a visuomotor task: near-optimal human
performance in a noisy changing task.
J Neurosci. 2003 Apr 1;23(7):3066-75.
http://www.jneurosci.org/cgi/reprint/23/7/3066.pdf
<Sen>

Donchin O, Francis JT, Shadmehr R.
Quantifying generalization from trial-by-trial behavior of adaptive
systems that learn with basis functions: theory and experiments in human motor control.
J Neurosci. 2003 Oct 8;23(27):9032-45.
http://www.jneurosci.org/cgi/reprint/23/27/9032.pdf
<Sam>

November 4

Reminder -- lab meeting today at 3pm.

November 18

Reminder that tomorrow's lab meeting will be at noon, and we will be reviewing the highlights from the SfN meeting.

November 25

We'll meet tomorrow (Tuesday) at 3pm. We'll talk experimental design for the various ideas floating around the lab right now.

December 2

There will be lab meeting today, 3pm, as usual.