JN Information on EB 2010
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Neurophysiol 82: 2462-2475, 1999;
0022-3077/99 $5.00
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Eifuku, S.
Right arrow Articles by Wurtz, R. H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Eifuku, S.
Right arrow Articles by Wurtz, R. H.

The Journal of Neurophysiology Vol. 82 No. 5 November 1999, pp. 2462-2475
Copyright ©1999 by the American Physiological Society

Response to Motion in Extrastriate Area MSTl: Disparity Sensitivity

Satoshi Eifuku and Robert H. Wurtz

Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland 20892-4435

Eifuku, Satoshi and Robert H. Wurtz. Response to Motion in Extrastriate Area MSTl: Disparity Sensitivity. J. Neurophysiol. 82: 2462-2475, 1999. Many neurons in the lateral-ventral region of the medial superior temporal area (MSTl) have a clear center surround separation in their receptive fields. Either moving or stationary stimuli in the surround modulates the response to moving stimuli in the center, and this modulation could facilitate the perceptual segmentation of a moving object from its background. Another mechanism that could facilitate such segmentation would be sensitivity to binocular disparity in the center and surround regions of the receptive fields of these neurons. We therefore investigated the sensitivity of these MSTl neurons to disparity ranging from three degrees crossed disparity (near) to three degrees uncrossed disparity (far) applied to both the center and the surround regions. Many neurons showed clear disparity sensitivity to stimulus motion in the center of the receptive field. About <FR><NU>1</NU><DE>3</DE></FR> of 104 neurons had a clear peak in their response, whereas another <FR><NU>1</NU><DE>3</DE></FR> had broader tuning. Monocular stimulation abolished the tuning. The prevalence of cells broadly tuned to near and far disparity and the reversal of preferred directions at different disparities observed in MSTd were not found in MSTl. A stationary surround at zero disparity simply modulated up or down the response to moving stimuli at different disparities in the receptive field (RF) center but did not alter the disparity tuning curve. When the RF center motion was held at zero disparity and the disparity of the stationary surround was varied, some surround disparities produced greater modulation of MSTl neuron response than did others. Some neurons with different disparity preferences in center and surround responded best to the relative disparity differences between center and surround, whereas others were related to the absolute difference between center and surround. The combination of modulatory surrounds and the sensitivity to relative difference between center and surround disparity make these MSTl neurons particularly well suited for the segmentation of a moving object from the background.




This article has been cited by other articles:


Home page
 J. Neurophysiol.Home page
K. Amano, B. A. Wandell, and S. O. Dumoulin
Visual Field Maps, Population Receptive Field Sizes, and Visual Field Coverage in the Human MT+ Complex
J Neurophysiol, November 1, 2009; 102(5): 2704 - 2718.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
A. W. Roe, A. J. Parker, R. T. Born, and G. C. DeAngelis
Disparity Channels in Early Vision
J. Neurosci., October 31, 2007; 27(44): 11820 - 11831.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
K. Umeda, S. Tanabe, and I. Fujita
Representation of Stereoscopic Depth Based on Relative Disparity in Macaque Area V4
J Neurophysiol, July 1, 2007; 98(1): 241 - 252.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
C. Chandrasekaran, V. Canon, J. C. Dahmen, Z. Kourtzi, and A. E. Welchman
Neural Correlates of Disparity-Defined Shape Discrimination in the Human Brain
J Neurophysiol, February 1, 2007; 97(2): 1553 - 1565.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
A. Takemura, Y. Murata, K. Kawano, and F. A. Miles
Deficits in Short-Latency Tracking Eye Movements after Chemical Lesions in Monkey Cortical Areas MT and MST
J. Neurosci., January 17, 2007; 27(3): 529 - 541.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
K. Nelissen, W. Vanduffel, and G. A. Orban
Charting the lower superior temporal region, a new motion-sensitive region in monkey superior temporal sulcus.
J. Neurosci., May 31, 2006; 26(22): 5929 - 5947.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
T. Uka, S. Tanabe, M. Watanabe, and I. Fujita
Neural Correlates of Fine Depth Discrimination in Monkey Inferior Temporal Cortex
J. Neurosci., November 16, 2005; 25(46): 10796 - 10802.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
J. D. Nguyenkim and G. C. DeAngelis
Disparity-Based Coding of Three-Dimensional Surface Orientation by Macaque Middle Temporal Neurons
J. Neurosci., August 6, 2003; 23(18): 7117 - 7128.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
T. Uka and G. C. DeAngelis
Contribution of Middle Temporal Area to Coarse Depth Discrimination: Comparison of Neuronal and Psychophysical Sensitivity
J. Neurosci., April 15, 2003; 23(8): 3515 - 3530.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
G. C. DeAngelis and T. Uka
Coding of Horizontal Disparity and Velocity by MT Neurons in the Alert Macaque
J Neurophysiol, February 1, 2003; 89(2): 1094 - 1111.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
S. Ferraina, M. Pare, and R. H. Wurtz
Comparison of Cortico-Cortical and Cortico-Collicular Signals for the Generation of Saccadic Eye Movements
J Neurophysiol, February 1, 2002; 87(2): 845 - 858.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
S. P. Dukelow, J. F. X. DeSouza, J. C. Culham, A. V. van den Berg, R. S. Menon, and T. Vilis
Distinguishing Subregions of the Human MT+ Complex Using Visual Fields and Pursuit Eye Movements
J Neurophysiol, October 1, 2001; 86(4): 1991 - 2000.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
A. Takemura, Y. Inoue, K. Kawano, C. Quaia, and F. A. Miles
Single-Unit Activity in Cortical Area MST Associated With Disparity-Vergence Eye Movements: Evidence for Population Coding
J Neurophysiol, May 1, 2001; 85(5): 2245 - 2266.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
C. Busettini, E. J. Fitzgibbon, and F. A. Miles
Short-Latency Disparity Vergence in Humans
J Neurophysiol, March 1, 2001; 85(3): 1129 - 1152.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
S. Ferraina, M. Pare, and R. H. Wurtz
Disparity Sensitivity of Frontal Eye Field Neurons
J Neurophysiol, January 1, 2000; 83(1): 625 - 629.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online