WWW.JNEUROSCI.ORG
-
The Journal of Neuroscience MBF Bioscience Autoneuron
QUICK SEARCH:   [advanced]


     
-


HOME  |   SEARCH  |   ARCHIVE  |   SUBSCRIBE  |   CONTACT  |   HELP
This Article
Right arrow Full Text (PDF)
Right arrow Submit an eLetter
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
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
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Rausell, E.
Right arrow Articles by Jones, E. G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rausell, E.
Right arrow Articles by Jones, E. G.

 Previous Article  |  Next Article 

Journal of Neuroscience, Vol 15, 4270-4288, Copyright © 1995 by Society for Neuroscience

ARTICLE

Extent of intracortical arborization of thalamocortical axons as a determinant of representational plasticity in monkey somatic sensory cortex

E Rausell and EG Jones
Department of Anatomy and Neurobiology, University of California-Irvine 92717, USA.

The extent of intracortical arborization of individual thalamocortical axons in area 3b of the somatic sensory cortex and the degree of overlap in the cortical projections of relay cells in the ventral posterior nucleus of the thalamus were examined in macaque monkeys. Paired intracortical deposits of Fast blue (FB) and Diamidino yellow (DY) separated by 100-1500 microns were made by inserting crystals of dye into the tracks of tungsten microelectrodes used to record receptive field data on area 3b cells. Each injection gave retrograde labeling of one or more clusters of cells extending in elongated anteroposterior arrays through the ventral posterior medial (VPM) or ventral posterior lateral (VPL) nucleus. Double-labeled cells were only found when the distance between the centers of the dye deposits was less than 600 microns. With interdeposit distances greater than 600 microns, most clusters of retrogradely labeled cells had a majority of cells labeled by FB or DY. However, even with interdeposit distances of 1-1.5 mm the labeled clusters also contained significant numbers of cells labeled with the other dye. These results and an accompanying regression analysis indicate that the extent of intracortical arborization of single thalamocortical axons in area 3b is no greater than 600 microns. However, adjoining cells in the same part of the thalamic body representation can project to cortical targets as discrepant as 1.5 mm. It is proposed that the fine grain of the cortical representation depends upon inputs from the majority population of each thalamic cell cluster.(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 J. Neurosci.Home page
F. Gheorghita, R. Kraftsik, R. Dubois, and E. Welker
Structural Basis for Map Formation in the Thalamocortical Pathway of the Barrelless Mouse
J. Neurosci., September 27, 2006; 26(39): 10057 - 10067.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
C. Shumway, J. Morissette, and J. M. Bower
Mechanisms Underlying Reorganization of Fractured Tactile Cerebellar Maps After Deafferentation in Developing and Adult Rats
J Neurophysiol, October 1, 2005; 94(4): 2630 - 2643.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
P. W. Hickmott and M. M. Merzenich
Local Circuit Properties Underlying Cortical Reorganization
J Neurophysiol, September 1, 2002; 88(3): 1288 - 1301.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
T. M. Woods, C. G. Cusick, T. P. Pons, E. Taub, and E. G. Jones
Progressive Transneuronal Changes in the Brainstem and Thalamus after Long-Term Dorsal Rhizotomies in Adult Macaque Monkeys
J. Neurosci., May 15, 2000; 20(10): 3884 - 3899.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
P. Wilson, P. D. Kitchener, and P. J. Snow
Cutaneous Receptive Field Organization in the Ventral Posterior Nucleus of the Thalamus in the Common Marmoset
J Neurophysiol, October 1, 1999; 82(4): 1865 - 1875.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurol. Neurosurg. PsychiatryHome page
N. J Davey, H. C Smith, E. Wells, D. W Maskill, G. Savic, P. H Ellaway, and H. L Frankel
Responses of thenar muscles to transcranial magnetic stimulation of the motor cortex in patients with incomplete spinal cord injury
J. Neurol. Neurosurg. Psychiatry, July 1, 1998; 65(1): 80 - 87.
[Abstract] [Full Text]

Home page
 J. Neurosci.Home page
P. W. Hickmott and M. M. Merzenich
Single-Cell Correlates of a Representational Boundary in Rat Somatosensory Cortex
J. Neurosci., June 1, 1998; 18(11): 4403 - 4416.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
A. Destexhe, D. Contreras, and M. Steriade
Mechanisms Underlying the Synchronizing Action of Corticothalamic Feedback Through Inhibition of Thalamic Relay Cells
J Neurophysiol, February 1, 1998; 79(2): 999 - 1016.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
P. R. Manger, T. M. Woods, A. Munoz, and E. G. Jones
Hand/Face Border as a Limiting Boundary in the Body Representation in Monkey Somatosensory Cortex
J. Neurosci., August 15, 1997; 17(16): 6338 - 6351.
[Abstract] [Full Text] [PDF]


-

Home  |   Search  |   Archive  |   Subscribe  |   Contact  |   Help
-
Copyright 2008 by Society for Neuroscience ONLINE ISSN: 1529-2401
-