September 6

* Computational models of sensorimotor planning and control
* The relationship between eye and arm movements
* The development of visually guided reaching in humans
* The role of variability in movement planning and adaptation

The first meeting will take place next week:
Wednesday Sept 13, 2000 10am in the Keck Conference Room.
The reading is available in the Sloan Reading Binder, HSE 806:
R. Held, "Plasticity in sensory-motor systems." Scientific American (late 1960's?).

September 26

"Computational Aspects of Motor Control and Motor Learning", Michael

I. Jordan. Supposedly in H. Heuer & S. Keele (eds), _Handbook_of_
_Perception_and_Action:_Motor_Skills_ , New York, Academic Press.

I was unable to find evidence that this book actually exists, but I do have a preprint of the article. A copy is available in the Sloan binder, and another (to borrow) will available in my office, HSE 816.

October 3

We will finish the paper we began this week, going over the second half on Motor Learning:

"Computational Aspects of Motor Control and Motor Learning", Michael
I. Jordan. Supposedly in H. Heuer & S. Keele (eds), _Handbook_of_
_Perception_and_Action:_Motor_Skills_ , New York, Academic Press.

We'll be finishing the Jordan paper from last week, covering the section on motor learning (p.30 onwards). And, good news for anyone who doesn't have copy: a postscript version is now available at ~sabes/Papers/Jordan1996.ps on Keck.

October 10

~sabes/LabMeeting/vanBeersEtAl1999a.pdf on Keck. Both are available (for photocopying) on my office door.

van Beers RJ, Sittig AC, Denier van der Gon JJ. How humans combine
simultaneous proprioceptive and visual position information. Exp
Brain Res. 1996 Sep;111(2):253-61.

van Beers RJ, Sittig AC, Denier van der Gon JJ. Localization of a
seen finger is based exclusively on proprioception and on vision of
the finger. Exp Brain Res. 1999 Mar;125(1):43-9.

Two other relevant papers are also in the LabMeeting directory:

van Beers RJ, Sittig AC, Gon JJ. Integration of proprioceptive and
visual position-information: An experimentally supported model. J
Neurophysiol. 1999 Mar;81(3):1355-64.

van Beers RJ, Sittig AC, Denier van der Gon JJ. The precision of
proprioceptive position sense. Exp Brain Res. 1998
Oct;122(4):367-77.

http://link.springer-ny.com/link/service/journals/00221/bibs/8122004/81220367.htm

October 17

To be discussed next week:

van Beers RJ, Sittig AC, Gon JJ. Integration of proprioceptive and
visual position-information: An experimentally supported model.
J Neurophysiol. 1999 Mar;81(3):1355-64.

~sabes/LabMeeting/vanBeersEtAl1999a.pdf

van Beers RJ, Sittig AC, Denier van der Gon JJ. The precision of
proprioceptive position sense. Exp Brain Res. 1998 Oct;
122(4):367-77.

~sabes/LabMeeting/vanBeersEtAl1998.pdf

http://link.springer-ny.com/link/service/journals/00221/bibs/8122004/81220367.htm

Two other relevant (but not particularly strong) papers:

van Beers RJ, Sittig AC, Denier van der Gon JJ. How humans combine
simultaneous proprioceptive and visual position information. Exp
Brain Res. 1996 Sep;111(2):253-61.

van Beers RJ, Sittig AC, Denier van der Gon JJ. Localization of a
seen finger is based exclusively on proprioception and on vision of
the finger. Exp Brain Res. 1999 Mar;125(1):43-9.

http://link.springer-ny.com/link/service/journals/00221/bibs/9125001/91250043.htm

October 24

All papers are available on-line or on Keck:

1) Schwartz gives an updated view of the Georgopoulos Line: Motor cortex encodes direction (and speed) in space:

Moran DW, Schwartz AB.
Motor cortical representation of speed and direction during
reaching. J Neurophysiol. 1999 Nov;82(5):2676-92.

http://jn.physiology.org/cgi/pmidlookup?view=full&pmid=10561437

~sabes/LabMeeting/MoranSchwartz1999.pdf

2) Scott and Kalaska argue for muscle/effector coding:

Scott SH, Kalaska JF.
Reaching movements with similar hand paths but different arm
orientations. I. Activity of individual cells in motor cortex.
J Neurophysiol. 1997 Feb;77(2):826-52.

http://jn.physiology.org/cgi/pmidlookup?view=full&pmid=9065853

~sabes/LabMeeting/ScottKalaska1999.pdf

3) Strick gives a mixed view: some muscle, some direction:

Kakei S, Hoffman DS, Strick PL.
Muscle and movement representations in the primary motor cortex.
Science. 1999 Sep 24;285(5436):2136-9.

http://www.sciencemag.org/cgi/pmidlookup?view=full&pmid=10497133

~sabes/LabMeeting/KakeiEtAl1999.pdf

November 14

Kawato M, Gomi H, Katayama M, Koike Y: Supervised learning for coordinative motor control. In Baum EB (Eds.) Computational Learning & Cognition, SIAM Frontier Series. Society for Industrial and Applied Mathematics, Philadelphia,pp.126-161,1993.

Kawato M: Feedback-error-learning neural network for supervised motor learning,. In Eckmiller R (Ed.) Advanced Neural Computers. Elsevier, North-Holland,pp.365-372,1990.

the paper for next week's lab mtg is at

/home/mcarey/kitazawa.pdf

November 21

Kandel & Schwartz, 4ed, Chp 42: "The Cerebellum"

Kitazawa S, Kimura T, Yin PB.
Cerebellar complex spikes encode both destinations and errors in arm
movements. Nature. 1998 Apr 2;392(6675):494-7.

http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v392/n6675/full/392494a0_fs.html

November 27

Crammond DJ, Kalaska JF
Prior information in motor and premotor cortex: activity during the delay period and effect on pre-movement activity. J Neurophysiol 2000 Aug;84(2):986-1005

~sabes/LabMeeting/CrammondKalaska2000.pdf

http://jn.physiology.org/cgi/content/full/84/2/986

Jouffrais C, Boussaoud D
Neuronal activity related to eye-hand coordination in the primate premotor cortex. Exp Brain Res 1999 Sep;128(1-2):205-9

~sabes/LabMeeting/JouffraisBoussaoud1999.pdf

http://link.springer.de/link/service/journals/00221/papers/9128001/91280205.pdf

December 6

brief discussion of the two older papers (optional reading).

Todorov E
Direct cortical control of muscle activation in voluntary arm movements: a model. NAT NEUROSCI 3: (4) 391-398 APR 2000

Paper, controversy/letters, and suplemental material are all available in ~sabes/LabMeeting

Supplementary readings will hopefully be on my door soon:

SANGER TD
THEORETICAL CONSIDERATIONS FOR THE ANALYSIS OF POPULATION CODING IN MOTOR CORTEX NEURAL COMPUT 6: (1) 29-37 JAN 1994

MUSSAIVALDI FA
DO NEURONS IN THE MOTOR CORTEX ENCODE MOVEMENT DIRECTION – AN ALTERNATIVE HYPOTHESIS NEUROSCI LETT 91: (1) 106-111 AUG 15 1988

December 12

John W. Krakauer, Zachary M. Pine, Maria-Felice Ghilardi, and Claude
Ghez. "Learning of Visuomotor Transformations for Vectorial Planning
of Reaching Trajectories". J. Neurosci. 2000 20: 8916-8924.

http://www.jneurosci.org/cgi/content/full/20/23/8916

December 19

Wolpert DM, Ghahramani Z, Jordan MI.
An internal model for sensorimotor integration. Science. 1995 Sep 29;269(5232):1880-2.