HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) All Versions of this Article: 96/6/3231    most recent 00487.2006v1 Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (11) Citing Articles via Google Scholar Google Scholar Articles by Naselaris, T. Articles by Georgopoulos, A. P. Search for Related Content PubMed PubMed Citation Articles by Naselaris, T. Articles by Georgopoulos, A. P.

Large-Scale Organization of Preferred Directions in the Motor Cortex. I. Motor Cortical Hyperacuity for Forward Reaching

¹Brain Sciences Center, Veterans Affairs Medical Center; ²Department of Neuroscience, ³Department of Neurology, and ⁴Department of Psychiatry, University of Minnesota Medical School; ⁵Cognitive Sciences Center, University of Minnesota, Minneapolis, Minnesota; and ⁶Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, Querétaro, Mexico

Submitted 8 May 2006; accepted in final form 6 September 2006

We used statistical methods for spherical density estimation to evaluate the distribution of preferred directions of motor cortical cells recorded from monkeys making reaching movements in 3D space. We found that this distribution, although broad enough to represent the entire 3D continuum of reaching directions, exhibited an enrichment for reaching forward from the body and, to a lesser degree, for reaching backward toward the body. The distribution of preferred directions of cells in the motor cortex may have important implications for motor cortical function and for the decoding of arm trajectories from population activity.

This article has been cited by other articles:

				R. Bhattacharyya, S. Musallam, and R. A. Andersen Parietal Reach Region Encodes Reach Depth Using Retinal Disparity and Vergence Angle Signals J Neurophysiol, August 1, 2009; 102(2): 805 - 816. [Abstract] [Full Text] [PDF]

				H. Merchant, T. Naselaris, and A. P. Georgopoulos Dynamic Sculpting of Directional Tuning in the Primate Motor Cortex during Three-Dimensional Reaching J. Neurosci., September 10, 2008; 28(37): 9164 - 9172. [Abstract] [Full Text] [PDF]

				A. G. Richardson, G. Lassi-Tucci, C. Padoa-Schioppa, and E. Bizzi Neuronal Activity in the Cingulate Motor Areas During Adaptation to a New Dynamic Environment J Neurophysiol, March 1, 2008; 99(3): 1253 - 1266. [Abstract] [Full Text] [PDF]

				A. P. Georgopoulos, H. Merchant, T. Naselaris, and B. Amirikian Mapping of the preferred direction in the motor cortex PNAS, June 26, 2007; 104(26): 11068 - 11072. [Abstract] [Full Text] [PDF]

				I. Kurtzer and T. M. Herter Contrasting Interpretations of the Nonuniform Distribution of Preferred Directions Within Primary Motor Cortex J Neurophysiol, June 1, 2007; 97(6): 4390 - 4390. [Full Text] [PDF]

				A. P. Georgopoulos, T. Naselaris, H. Merchant, and B. Amirikian Reply to Kurtzer and Herter J Neurophysiol, June 1, 2007; 97(6): 4391 - 4392. [Full Text] [PDF]